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1
Q

What displays do laptops use?

A

LCD Displays

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2
Q

What does LCD display stand for?

A

Liquid Crystal Display

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3
Q

What does TN LCD stand for?

A

Twisted Nematic LCD (Liquid Crystal display)

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4
Q

What does IPS LCD stand for?

A

In Plane Switching (Liquid Crystal Display)

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5
Q

What does VA display stand for?

A

Vertical alignment Liquid Display

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5
Q

What does OLED stand for?

A

Organic Light Emitting Diode

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6
Q

What type of connection does a DB-9 interface have?

A

A nine-pin connection

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7
Q

What is another term for DB-9?

A

DE-9

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8
Q

DB-9 or DE-9 is commonly transported by what signals?

A

RS232 signals

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9
Q

Before USB was invented what serial connection was used for almost everything?

A

DB-9

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10
Q

What does NFC stand for?

A

Near field communication

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11
Q

How do you connect to wireless hotspot?

A

Over 802.11

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12
Q

What does TRRS stand for?

A

Tip-Ring-Ring-Sleeve

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13
Q

What is a TRRS?

A

This is an analog audio jack

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14
Q

What were the original cellular networks called?

A

2G networks

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15
Q

What were the two global standards for the original cellular networks?

A

GSM or the Global System for Mobile Communications. And CDMA or Code Division Multiple Access.

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16
Q

What did GMS standard use to allow many people to communicate over the same frequencies?

A

Multiplexing

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17
Q

What does SIM stand for?

A

Subscriber identity module

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18
Q

With 3G technologies, what new capabilities were introduced?

A

GPS, mobile television, streaming video and streaming audio, or video on demand.

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19
Q

GSM and CDMA were converged to create what?

A

LTE

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20
Q

What kind of technology is LTE?

A

4G

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21
Q

What does LTE stand for?

A

Long term evolution

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22
Q

What does EDGE stand for?

A

Enhanced Data Rates for GSM Evolution

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22
Q

What is LTE based on?

A

GSM and what we call EDGE

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23
What did LTE throughput increase to?
Up to 150 megabits per second
24
What does LTE-A stand for?
Long Term Evolution Advanced
25
What did LTE-A throughput increase to?
300 megabits per second
26
What new generation of mobile communication was introduced in 2020?
5G or fifth generation cellular networking.
27
What speed can 5G networks perform at?
10 Gigabits per second
28
What does PRL stand for?
Preferred Roaming List
28
What does MDM stand for?
Mobile Device Management
28
What is a PRL update?
allows your phone to understand where all of the appropriate towers are for the network that it happens to be using.
29
How could you turn your phone into a Wi-Fi hotspot?
with an 802.11 network.
30
What layer is the transport layer of the OSI network model?
Layer 4
31
What operates at the transport layer of the OSI network?
TCP and UDP
32
What does TCP stand for?
Transmission Control Protocol
33
What is TCP/ Connection Oriented Protocol?
set up the flow from one device to the other and a formal process to tear down that flow when the conversation is over.
33
What is another name for Transmission Control Protocol?
Connection Oriented Protocol
34
What is TCP also known as?
Reliable delivery
35
What does UDP stand for?
User Datagram Protocol.
36
What kind of mechanism does TCP have so that if a device is receiving information too quickly it can slow down the process?
Flow control mechanism
37
What kind of flow does UDP have?
It has a connectionless flow
38
In UDP is there a formal process to set up traffic flow?
There's no formal process to set up a traffic flow
39
In UDP is there a formal process to set up traffic flow?
There's no formal process to set up a traffic flow
40
In UDP is there a formal process to halt a process at the end?
There's no formal process to tear that down at the end.
40
Why is UDP referred to as unreliable?
Because there's no acknowledgment being sent by the destination device.
41
What connectionless protocol uses UDP and automatically assigns IP addresses?
DHCP, which is the Dynamic Host Configuration Protocol.
41
What kind of communication is UDP associated with?
UDP is most associated with real time communication
42
What connectionless protocol uses UDP as a transport mechanism?
TFTP, or the Trivial File Transfer Protocol, which uses UDP as its transport mechanism
43
What happens if DHCP (Dynamic Host Configuration Protocol) doesn't receive a response?
if it sends information and doesn't receive a response, DHCP is responsible for resending that data over the network.
44
What does HTTPS stand for?
Hypertext Transfer Protocol Secure
44
What happens if data between a web server and client loses a packet between point A and B in TCP?
It will ask to retransmit that information, and the transmitted data is sent over the network.
45
What is a permanent port number called?
Non-ephemeral ports. T
46
What is port number 80 associated with?
HTTP.
47
What is port 443 associated with?
HTTPS
48
What protocol does VoIP use? (Voice over IP)
UDP
48
What do you call a temporary port number?
Ephemeral ports
49
What is TCP port 20 used for?
Data transfers.
50
How many port numbers are used by FTP?
Two
51
What is TCP port 21 used for?
Control the data transfers
51
What port does SSH (Secure Shell) use to communicate?
Port 22
52
Where does the 'Secure' in Secure Shell come from?
Although we see plain text on our screen, any communications sent over the network is sent as encrypted data.
53
What is a secondary way to remotely connect to a device?
Telnet, or the telecommunication network protocol.
54
What does SMTP stand for?
Simple Mail Transfer Protocol
55
What port does SMTP use?
Port 25
56
tcp/389
LDAP- Lightweight Directory Access Protocol
57
TCP/80
HTTP- Hypertext Transfer Protocol
58
tcp/443
HTTPS- Hypertext Transfer Protocol Secure
59
udp/53
DNS- Domain Name Server
60
tcp/143
IMAP- Internet Message Access Protocol
61
tcp/3389
RDP- Remote Desktop Protocol
62
tcp/22
SSH- Secure Shell
63
tcp/110
POP3- Post Office Protocol Version 3
64
tcp/25
SMTP- Simple Mail Transfer Protocol
65
tcp/445
Microsoft-ds TCP/IP MS Network Service
66
tcp/161
SNMP- Simple Network Management Protocol
67
tcp/23
Telnet Port
68
udp/53
DNA- Domain Name System
69
tcp/110
Port 110 is dedicated to the Post Office Protocol (POP3)
70
tcp/25
SMTP (Simple Mail Transfer Protocol)
71
tcp/23
is the default TCP port for Telnet
72
If a printer stops printing and has jobs in the queue what do you do?
Restart the printer's spooler
73
If an external USB tries to boot on a computer first and you don't want it to, how do you stop it?
Modify the BIOS to bot from the internal hard drive
74
Why would someone's print jobs produced garbled text while everyone else can print normally?
Print driver configured for PCL. The page description language must match the language on the printer. Hewlett-Packards PCL.
75
A network administrator has received a ticket complaining of port flapping on an Ethernet switch. Which of the following would be the MOST likely reason for this issue?
Port flapping describes a network interface that constantly transitions between connected and disconnected. This can sometimes be related to software or firmware, but is most likely associated with a hardware issue.
75
What tool would be the best choice to find the other end of a network connection?
Tone Generator- used to produce an analog tone on the cable and an inductive probe is used to 'listen'
76
What does USB stand for?
Universal Serial Bus
76
A user has powered on their computer and received the message “Operating system not found.” A check of the system shows that the SATA drive cables are properly connected. Which of the following would be the NEXT best troubleshooting step?
Check for removable drives If a USB storage device is connected to a computer and the BIOS (Basic Input/Output System) is checking USB devices before the primary storage drive "Operating system not found" error could appear with some USB devices.
77
A user is having an issue with a smartphone battery bulging and physically pushing the screen away from the phone. The rest of the phone appears to be operating normally. Which of the following should be the BEST next troubleshooting step?
Power off the phone and contact support A swollen battery indicates damage to the battery and could potentially be a fire hazard. The phone should be powered down and the damaged battery should be removed by a trained smartphone support technician.
78
A client’s laptop appears to boot normally, but nothing ever appears on the LCD. After closer inspection, you notice the output is visible but it's too faint to clearly see anything. What is the MOST likely cause of this issue?
Inverter The inverter powers the CCFL (Cold Cathode Fluorescent Lamp) LCD backlight, allows you to easily view the pixels on the display.
79
A graphics designer is experiencing increasing delays when accessing files on her hard drive. The user maintains a daily backup of all data on the drive. Which of these would be the BEST next troubleshooting step for this issue?
Perform a hard drive diagnostic Before making any changes, it would be useful to gather more information about this problem. A hardware diagnostic would determine if the hard drive itself is working properly
80
Which of the following would be MOST likely found on an optical disc? Document archive? OS boot files? RAID parity files? BIOS configs
Document archive An optical disc such as a DVD-ROM (Digital Versatile Disc - Read Only Memory) has the advantage of a relatively large storage area and the ability to write once and never worry about an accidental deletion.
81
A firewall is configured to block email transfers from a remote server. Which of the following ports is the firewall blocking?
25 Port 25 is used by SMTP (Simple Mail Transfer Protocol) to send email messages from devices and transfer those messages between SMTP email servers.
81
When a user starts their computer, the screen remains blank and the computer beeps twice. Which of these would be the MOST likely cause of this issue?
The memory is faulty The POST (Power On Self Test) is the initial hardware check during the startup process. If a major hardware component is faulty, the computer will beep and a message will be displayed on the screen.
82
The technician has modified the resolution and refresh rates, but the projector image continues to flicker on the LCD projector. Which of the following would be the BEST next troubleshoot step?
Replace the video cable A display issue associated with flickering and poor video quality would commonly point to the connection between the video adapter and the display device.
83
The stylus on a Windows tablet will no longer interact with the user interface. Which of these would be the MOST likely cause of this issue?
Digitizer The digitizer is the component in a touch screen to convert analog input from a fingerprint or stylus into a digital input. If the digitizer is having an issue, then problems will occur with any direct screen input.
84
What does RAID stand for?
Redundant Array of Independent Drives
85
RAID level 1- Mirroring disadvantage
The main disadvantage is that the effective storage capacity is only half of the total drive capacity because all data get written twice.
85
What is RAID used for?
is a technology that is used to increase the performance and/or reliability of data storage.
85
RAID level 1- Mirroring
RAID 1 offers excellent read speed and a write-speed that is comparable to that of a single drive.
85
RAID Level 0- Striping
offers great performance, both in read and write operations. There is no overhead caused by parity controls.
85
RAID level 5- Striping with Parity
It requires at least 3 drives but can work with up to 16. Data blocks are striped across the drives and on one drive a parity checksum of all the block data is written.
86
RAID level 5- Striping with Parity advantage
Read data transactions are very fast while write data transactions are somewhat slower. If a drive fails, you still have access to all data
87
RAID level 5- Striping with Parity disadvantage
Drive failures have an effect on throughput. This is complex technology. If one of the disks in an array using 4TB disks fails and is replaced, restoring the data (the rebuild time) may take a day or longer
88
RAID level 6- Striping with double Parity advantage
If two drives fail, you still have access to all data, even while the failed drives are being replaced. So, RAID 6 is more secure than RAID 5.
89
RAID level 6- Striping with double Parity disadvantage
Write data transactions are slower than RAID 5 due to the additional parity data that have to be calculated. Drive failures have an effect on throughput, although this is still acceptable.
90
RAID level 10 – combining RAID 1 & RAID 0 advantage
If something goes wrong with one of the disks in a RAID 10 configuration, the rebuild time is very fast since all that is needed is copying all the data from the surviving mirror to a new drive. This can take as little as 30 minutes for drives of 1 TB.
90
RAID level 10 – combining RAID 1 & RAID 0 disadvantage
Half of the storage capacity goes to mirroring, so compared to large RAID 5 or RAID 6 arrays, this is an expensive way to have redundancy.
91
building a server for a data center in another country. The server will manage a print queue and provide a local storage partition for temporary file transfers. Which of the following power supply specifications will be the MOST important
Voltage input options Connecting to the power source in a different country is an important consideration when selecting a power supply
91
Which of these technologies do not require a backlight to provide am image?
An OLED (Organic Light Emitting Diode) display
92
Which of the following ports are used for file transfers? (Select TWO)
21 and 20 FTP (File Transfer Protocol) is a standard method of transferring files across different operating systems. FTP uses TCP (Transmission Control
93
A system administrator has tripped over an Ethernet cable and the cable is bent. What tool to use to fix this?
Crimper
94
A client’s laptop appears to boot normally, but nothing ever appears on the LCD. After closer inspection, you notice the output is visible but it's too faint to clearly see anything. What is the MOST likely cause of this issue?
Inverter The inverter powers the CCFL (Cold Cathode Fluorescent Lamp) LCD backlight, allows you to easily view the pixels on the display.
95
A graphics designer is experiencing increasing delays when accessing files on her hard drive. The user maintains a daily backup of all data on the drive. Which of these would be the BEST next troubleshooting step for this issue?
Perform a hard drive diagnostic Before making any changes, it would be useful to gather more information about this problem. A hardware diagnostic would determine if the hard drive itself is working properly
96
Which of the following would be MOST likely found on an optical disc? Document archive? OS boot files? RAID parity files? BIOS configs
Document archive An optical disc such as a DVD-ROM (Digital Versatile Disc - Read Only Memory) has the advantage of a relatively large storage area and the ability to write once and never worry about an accidental deletion.
96
The technician has modified the resolution and refresh rates, but the projector image continues to flicker on the LCD projector. Which of the following would be the BEST next troubleshoot step?
Replace the video cable
97
The stylus on a Windows tablet will no longer interact with the user interface. Which of these would be the MOST likely cause of this issue?
Digitizer The digitizer is the component in a touch screen to convert analog input from a fingerprint or stylus into a digital input. If the digitizer is having an issue, then problems will occur with any direct screen input.
98
A newly installed MFD provides an option to "scan to SMB." Which to use?
Files are stored on a Microsoft share SMB (Server Message Block) is the protocol used by Microsoft operating systems to share files, print jobs, and other information between other
98
they cannot view any Internet web sites. Their network configuration shows the IP address as 169.254.228.109, the subnet mask is 255.255.0.0, and they
The DHCP server is down If a DHCP (Dynamic Host Configuration Protocol) server is not responding, the local workstation will configure itself with an
99
What type of device uses the media access control (MAC) in the data packet transmit the data only to the device that requested it.
Switches
99
slow network performance from their workstation. A network technician checks the data closet and finds the wires are not properly seated in the 110 block. Which of the following
Punch-down tool A punch-down tool is used to firmly "punch" a wire into a wiring block. These blocks are usually located in a wiring closet or on a patch
100
DHCP on a laptop, but they would like the same IP address to be assigned to the laptop each time it starts. What would provide this functionality?
Create an IP reservation on the DHCP server A DHCP (Dynamic Host Configuration Protocol) server will automatically assign IP (Internet Protocol) addresses to devices on the network from an available pool.
100
What type of device connects multiple computers to the network, and broadcasts the data to all connected devices?
A hub
101
What does APIPA stand for?
(Automatic Private IP Addressing) An APIPA address is a link-local address, so network communication is limited to the local
102
While configuring a new workstation in the lab, one of the engineers recommends using 255.255.255.0. What part of the configuration is this
Subnet mask Subnet masks are used by a device to determine what subnet it's connected to. Subnet masks are a series of binary ones that are used to "mask" the
103
needs to use different Windows versions to study for an industry certification exam. The technician currently uses
Upgrade the system RAM, and Install Windows guest VMs The easiest way to use multiple operating syst
104
Which of the following BEST describes a Bluetooth network?
PAN A PAN (Personal Area Network) is designed for a small area and usually is associated with an individual. Bluetooth devices such as
105
from Android to iOS. She would like all of her emails, contact lists, and calendar events to be moved to her new phone. Which of the following would be the BEST
Connect the new phone to the corporate Microsoft 365 service Microsoft 365 manages email, calendar events, and contact information in
106
black screen and does not respond to any screen taps or button presses. A check of the SIM card shows a red label but no physical damage. Which of the following is the MOST
Liquid damage This indicator is usually white, and it can often be seen without disassembling the device.
107
The database owner requires the fastest performance and redundancy if a single drive fails. The storage array should support at least 8 TB of available space. Which of
RAID 5 with 10,000 RPM, 5 TB drives The question is focused on three requirements; performance, drive space,
108
A user would like to access email from their Windows 10 laptop using wifi. How to connect to it?
802.11 802.11 wireless connections can be used to access a smartphone configured as an Internet hotspot.
109
A system administrator needs to upgrade a laptop from a hard drive to an SSD?
Create an image of the hard drive and restore to the SSD A system image contains everything on the storage drive, so the restored system will have the same operating system, configuration
110
camera and the installation of third-party apps has been disabled. Which of the following is the most likely cause?
An MDM has disabled the features An MDM (Mobile Device Manager) can enable or disable effectively any feature on the smartphone, including the camera and the ap
111
A system administrator is using a maintenance kit on a network-connected laser printer. Which of the following should be the lasts step?
Reset the page counter The page counter is a helpful metric to determine how much the printer
112
Which wireless standard can operate in the 5 GHz band and provides
802.11ax The 802.11ax standard, or Wi-Fi 6, can operate in either the 2.4 GHz or 5 GHZ
113
line to appear down the printed page as the toner sticks to the scratched part of the drum.
The photosensitive drum is damaged
113
Each operating system will be tested individually in a lab environment. The company would like to minimize any additional hardware purchases for this project.
Purchase a system that is configured just above the hardware requirements for the highest-end operating system. Create
114
The toner smears when touched on the paper? What does that mean?
Fuser is damaged
115
Which of the following would be MOST associated with an IoT device?
ARM An ARM (Advanced RISC Machine) processor architecture
116
What is the minimum category of unshielded copper cable for a 10 gigabit per second Ethernet link with a fifteen meter distance?
Category 6 The physical characteristics of networking cables are separated into categories. An unshielded category 6 cable can support a ten
117
Category 5
Category 5 copper cables can support a one gigabit per second 1000BASE-T network up to one hundred meters. Ten gigabit per second speeds are not supported over category 5 cable.
118
Category 5e
A category 5e cable supports the same Ethernet standards as a category 5 cable, 5e is merely a small update to category 5. Consequently, a 100-meter-long, gigabit-per-second 1000BA
119
This is the configuration of one device: IP address: 192.168.1.7 Subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 DNS: 192.168.1.7 The engineer can successfully ping the local IP address and the default gateway address. Next step?
Check the DNS configuration One of the most noticeable IP (Internet Protocol) configuration settings was the DNS (Domain Name Service) server IP address set to the same IP address the local device.
120
A user in a remote office is connecting a device using an F-connector. Which of the following would be MOST likely associated with this connection?
Cable modem A cable modem is commonly associated with a coaxial cable input using an F-connector. The output from the cable modem commonly uses an RJ45 Ethernet connector.
121
A user in the accounting department has turned on their computer and received the message “Date and Time not set.” Which of the following would be the MOST likely reason for this message?
The motherboard battery has discharged The battery on a motherboard is used to maintain the date and time configuration when the computer is not connected to a power source. If the battery has discharged, the computer will not be able to show the time
122
HDMI. The video appears normal, but the user does not hear any audio through the monitor's speakers. Which of the following would be the two MOST likely reasons for this audio issue? (Select TWO)
Audio controls are muted, and OS is not configured for HDMI audio output If the audio controls are muted, then no audio will be heard on any output device. The muted controls may be on the monitor or the operating system.
123
A system administrator has created a cloud configuration which automatically monitors utilization for usage-based billing. Which of the following describes this cloud computing characteristic?
Metered Metering will measure transaction activity, CPU utilization, storage use, and other important metrics. These are often used for billing purposes, where the customer will pay for CPU or storage by the application instance.
124
troubleshoot a system that has been slowing down over time. While examining the computer, the administrator can hear a series of clicks from the inside of the case. Which of the following should be the FIRST step to address this issue?
Perform a full backup of the server A clicking noise indicates some type of hardware issue with the computer, so the first step would be to confirm that a recent backup is available for all of the data on this system.
125
The manager would like to print all twenty pages of the document before the next copy begins printing. What setting should the manager configure in the output settings?
Collate The printing of multiple copies in their proper order is collating the output. If the output was not collated, all of the page one copies would print, then all of the page two, etc.
126
Remote user have connected their laptop to the wireless network, but the corporate Internet access is performing much slower than their remote site network. Which of the following would be the most likely reason for this issue?
There is interference with the wireless signal Poor performance can be caused by many different variables, but the only choice which would cause a performance problem is interference
127
manager needs to have access to the same files, contacts, and email messages across their MacBook, iPad, and iPhone devices. Best sync?
Authenticate to iCloud on all devices iCloud provides backups, synchronization, and app installation across multiple Apple devices. Authenticating each device to the iCloud service provides automatic synchronization over wireless or cellular networks.
128
A user is reporting that a shared laser printer in the marketing department is not printing from one particular application. The front panel of the printer shows that the printer is online jobs. Other users are able to successfully print
Verify the network printer name in the application We know that the printer is working normally because other people are able to print successfully.
129
A network administrator is connecting four company locations in different countries. Which of the following would BEST describe this configuration?
WAN A WAN (Wide Area Network) connects LANs across a long geographical distance. Once the link extends past the local city area, the connection would be considered a WAN link.
130
report of customers receiving email messages from the company, but upon further analysis the administrator finds the messages were not actually sent by the corporation. What should be implemented to prevent these spoofed email messages?
Configure an SPF record in the DNS An SPF (Sender Policy Framework) record in the DNS (Domain Name System) server provides a list of all servers authorized to send emails for a domain.
130
A system administrator has configured a VM for dual processors, 16 GB of RAM, and 120 GB of disk space. Which of the following is required to start this VM?
Hypervisor A hypervisor, or virtual machine manager, is the software that manages the virtual platform and guest operating systems
131
Battery short at work versus home, 802.11 Wifi, bluetooth not enabled. How to extend?
Disable the cellular radio at work When a mobile provider's network isn't available, a phone will constantly try to find and reconnect to a cellular network. This drains the battery faster
132
A desktop computer has just abruptly shut off, and pressing the power button doesn’t restart the system. There are no fans spinning, no lights are on, and no messages appear on the display
The power supply is faulty A faulty power supply could cause a loss of power across all computer systems, and the lack of fans, lights, and output on the display would be the most likely cause given the available options.
133
What kind of device is commonly used to filter traffic based on a predefined set of rules?
Firewall A firewall is designed to evaluate inbound traffic, compare that traffic to predefined security policies, and allow or block that traffic from passing through the firewall.
134
Which of these connection types use coax to provide Internet data, voice, and video over the same wire?
Cable broadband Cable television brought video into everyone's home, and now voice and Internet services are included on the same coax cable.
135
A user is pairing a Bluetooth headset to their smartphone. What type of security is used during the pairing process to authorize this connection?
PIN A PIN (Personal Identification Number) is used to validate the device connecting during the Bluetooth pairing process. This authorization prevents a third-party from connecting to a smartphone or tablet without permission.
135
desktop administrator has been asked to troubleshoot a laptop computer that beeps during the power on process while the laptop screen remains dark. Which of the following would be the best NEXT troubleshooting step?
Establish a theory Once an issue has been identified, it's important to consider all of the possible reasons the problem may have occurred. It's useful to list all possible causes, even those that might not be obvious.
136
A company is deploying cloud-hosted virtual desktops for training room classes. The VMs have already been configured in the cloud. Which of the following is required to access these VMs using thin clients in the training room?
Mouse, keyboard, and monitor The client device is usually a thin-client that has a minimum set of resources, a mouse, keyboard, and a monitor.
137
A technician has connected a laptop to an LCD. The LCD is displaying the correct information, but all of the content appears to be fuzzy and difficult to read. Which of the following is the MOST likely reason for this issue?
The laptop resolution is incorrect: If the resolution settings in the operating system don't match the native resolution of the physical display, the information on the screen may appear blurry or distorted.
138
An engineering firm is upgrading their storage array to include additional drive space for documents and designs. The primary goal is to provide high performance and uptime, even if two drives were to fail. the following would be the BEST choice
RAID 10: As long as only one drive fails in each RAID 0 mirror, the redundancy will remain valid and the user's data will continue to be available.
139
A network administrator is deploying a firewall to the cloud using an API to configure the device. Which of the following would BEST describe this deployment type?
SDN SDN (Software Defined Networking) allows the functions of a networking device to be split into logical units and virtualized into a software-based deployment.
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What is Iaas (Infrastructure as a Service)?
is a cloud model that provides the fundamental resources needed to deploy an operating system and application into the cloud. A common IaaS deployment might include storage, CPU, networking, and a base operating system installation.
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What is LDAP (Lightweight Directory Access Protocol)
provides a standard method of communicating to a directory service. LDAP does not provide a method of deploying software-based infrastructure devices into the
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What is DKIM (Domain Keys Identified Mail)
is a technique for digitally signing a domain's outgoing email message. The recipient of the emails can validate the digital signature using a public key included in a DNS (Domain Name System) TXT record.
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A user’s tablet has stopped responding to any type of finger input on the screen. The clock and other tablet functions appear to be working. Which of the following would be the BEST way to correct this issue?
Restart the tablet Before making any changes to hardware or software, it's useful to restart the tablet to see if a software glitch may have been the underlying issue.
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A company needs to purchase a new printer for an open work area. The primary requirement of this printer is to be as quiet as possible. Which of these printer types would be the best fit for this requirement?
Thermal Of the available options, thermal printers are the quietest. The only moving parts in a thermal printer are the motors that push the paper through the printer, and those motors are small and run almost silently.
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A company has designed a platform to scale up when the application use increases during the day, and scale back down at night. Which of the following BEST describes this characteristic of cloud computing?
Rapid elasticity Scaling up and down as needed is a significant characteristic of cloud computing. This allows organizations to manage and pay for resources when busy, but save time and money when the resources are no longer needed.
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A user in the marketing department would like to use a stylus to provide input through an external digitizer. Which of the following would be the BEST choice for this requirement?
Drawing pad A drawing pad connects to a desktop or laptop computer to provide very precise input using a digitizer and stylus.
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A system administrator needs a secure method of storing encryption keys. Which of the following would be the BEST choice for this requirement?
HSM An HSM (Hardware Security Module) is commonly used as a secure method of key backup. The HSM can be deployed as a standalone server or in a lightweight form with Smart Cards or USB keys.
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A technician is installing a DSL modem in a data center. Which of the following connectors would be used to connect the DSL modem to the Internet provider line?
The RJ11 connector (Registered Jack 11) is the modular connector commonly associated with analog POTS lines. Since DSL uses the existing telephone lines, the DSL connection from an Internet Service Provider will use those same lines with RJ11
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A server administrator is upgrading the memory in a web server from 16 GB of non-ECC RAM to 64 GB of ECC RAM. After starting the system with the new memory, the computer beeps and nothing is displayed on the screen.
The new memory is not compatible with the motherboard ECC (Error Correcting Code) memory is designed to detect errors and correct the errors on the fly.
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A workstation has been assigned an APIPA address. Which of the following would be the MOST likely reason for this assignment?
If a device does not have a static IP address and an address is not available from a DHCP server, the local device will assign itself an APIPA address and communication to other APIPA devices on the same subnet will be available.
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A system administrator made some BIOS changes to a desktop computer running Windows 10, and now this message appears when starting the computer: “This drive can only boot in UEFI mode. Which of the following would be the BEST next troubleshooting step?
Enable Secure Boot Secure Boot is part of the UEFI Secure Boot ensures that the underlying operating system has not been modified by an outside source
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A Windows user would like to temporarily store information from RAM onto their SSD. Which of the following features should be configured?
Virtual memory Virtual memory is used to extend the size of available memory by temporarily moving unused data out of RAM and onto a local storage drive.
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Which of the following can be used to forward traffic based on a destination MAC address?
Unmanaged switch:The qualification of managed or unmanaged switches make forwarding decisions the same way. The difference between a managed and unmanaged switch are based o
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What does DSL stand for?
Digital Subcriber line
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What does POTS stand for?
(Plain Old Telephone System)
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Which of the following would be the BEST choice for capturing an image from a printed page and saving it on a computer
Flatbed scanner A flatbed scanner is designed to capture images from paper and convert them into digital form.
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What is layer 1 of the OSI model?
Physical Layer
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Physical Layer-OSI
The physical layer is responsible for the physical cable or wireless connection between network nodes.
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What is layer 2 of the OSI model?
Data Link Layer
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What is layer 3 of the OSI model?
Network layer
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What is layer 5 of the OSI model?
Session Layer
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What is layer 6 of the OSI model?
Presentation layer
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Network Layer
has two main functions. One is breaking up segments into network packets and reassembling the packets on the receiving end. The other is routing packets by discovering the best path across a physical network.
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What is layer 7 of the OSI model?
Application layer
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How many layers in the OSI model?
7 Layers
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Data Link Layer
establishes and terminates a connection between two physically connected nodes on a network. It breaks up packets into frames and sends them from source to destination.
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Session Layer
creates communication channels, called sessions, between devices. It is responsible for opening sessions, ensuring they remain open and functional while data is being transferred, and closing them when communication ends.
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Application Layer
used by end-user software such as web browsers and email clients. It provides protocols that allow software to send and receive information and present meaningful data to users.
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Presentation Layer
prepares data for the application layer. It defines how two devices should encode, encrypt, and compress data so it is received correctly on the other end. prepares for transmission over the session layer.
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OSI layers 5, 6, 7
combined into one Application Layer in TCP/IP
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OSI layers 1, 2
combined into one Network Access Layer in TCP/IP – however TCP/IP does not take responsibility for sequencing and acknowledgement functions, leaving these to the underlying transport layer.
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What is the Thermal printer type technology?
Heating Element
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What is the Impact printer type technology?
Ribbon
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What is the Inkjet printer type technology?
Ink cartridge
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What is the Laser printer type technology?
Fuser
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What is the 3D printer type technology?
Plastic filament
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What do you use to locate one cable inside a bundle of cables?
Toner probe
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What do you use to verify the connected pins on both sides of an Ethernet cable?
Cable tester
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What do you use to capture a network conversation to measure bandwidth usage?
Network Tap
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What can you use to fasten an RJ45 connector to a Category 6 cable?
Crimper
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What is SMB used for?
Print from Windows to a network printer. commonly used on Windows systems to share files and printers over tcp/445.
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four identical drives to install into a database server. Which of these RAID types would provide both redundancy and the most available storage space?
RAID 5. With RAID 5, three drives would contain user data and the fourth drive would store parity information.
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A user in the marketing department needs an LCD with the best possible color representation. Which of the following would be the BEST choice for this requirement?
IPS
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What is IPS?
In plane switching, which provides excellent color representation
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What is a Spam Gateway?
A spam gateway acts as a filter for unauthorized or unsolicited email messages. Most spam gateways can scan files for malicious software and filter those messages before delivery to the recipient.
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tablet is not able to retrieve or send mail, browse the Internet, or connect to video conferences. Apps on the device which do not require connectivity are working as expected. Why?
The Wi-Fi network is out of range A Wi-Fi network has limited range, and poor connectivity would result in communications issues, application faults, and other networking issues.
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increase in malware delivered to random employees through email attachments. Which of the following would be the BEST way to protect users against this malicious software?
Spam gateway
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A PC technician has been asked to replace the LCD on a touch-screen laptop computer. Which of the following would be the MOST important component to test after this replacement?
Digitizer A digitizer is built into the LCD display, and it would be the most likely component to have a problem after the entire display has been replaced.
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IPv4 Address: 192.168.1.22 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.1.1 Cant ping 192.168.1.1 w
The local router is down The default gateway is the local router for the IP subnet. If the default gateway address of 192.168.1.1 is not responding to a ping, then the router may not be operational.
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The computer tends to power down when working on complex designs that require extensive CPU utilization. Which of the following would be the MOST likely reason for this issue?
The case fans are blocked Most motherboards are designed to power off automatically if the temperatures become excessive.
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Which of these services would be associated with a Windows file transfer?
SMB SMB (Server Message Block) is the protocol used by Microsoft Windows for file sharing, printer sharing, and other Windows services.
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A server administrator is configuring a new system for virtualization. Which of the following configurations would provide virtualization support on an Intel CPU?
Enable VT in the firmware Many Intel processors support VT, or Intel Virtualization Technology.
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A user in the shipping department is printing a single page to your laser printer, but the output includes the printed page with three or four pages stuck together underneath it. Which of these would be the most likely cause of this issue?
Separation pad The separation pad ensures that the printer will pull a single page from the paper tray at a time
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A company is using a cloud-based service that provides a hardware platform and no additional software. Which of these would BEST describe this purchase?
IaaS IaaS (Infrastructure as a Service) is a model that provides the computing platform, but no additional software.
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A server administrator needs to store gigabytes of server performance statistics for future analysis. The data needs to be always be available, even if a storage drive fails. Which of the following would be the BEST choice for this data?
RAID Most RAID (Redundant Array of Independent Disks) configurations support the use of multiple drives for redundancy, even if a single drive was to fail.
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In which of the following would a cable with a DB-9 connector be used?
Configuring a router A DB-9 connector, or less commonly, DE-9 (D-subminiature size E, 9 pin) is a connector used to send serial signals to another device.
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A workstation administrator is configuring a new system for graphics designers, and the users have requested the fastest possible storage speed for reading and writing data. Which of the following would be the BEST choice for this requirement?
2 TB SSD The most important requirement for this new system is the speed of reading and writing data. Of the available options, the fastest throughput is an SSD (Solid-State Drive).
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A user has connected a new laptop to an LCD projector in a conference room. About thirty minutes into the presentation, the projector light turns off but the projector fans continue to run. Why?
Poor projector airflow The lamp in an LCD projector can get very hot, and there are often many fans used to keep the lamp cool enough to work properly.
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A system administrator has noticed that their cloud implementation supports multiple application instances during the busy workday, but only one application instance is available during the slower evening shifts. What is it?
Rapid elasticity Rapid elasticity is a cloud characteristic used to increase and decrease the available resources as the application load changes.
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printing a document on the company letterhead stored in one of the printer trays. However, the output is instead printed from a tray containing plain paper. Which of the following would be the BEST way to resolve this issue?
Modify the output tray in the print dialog The printer dialog shown during the print process should provide an option to choose the tray for the print job.
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A security administrator would like to ensure that each login attempt from a smartphone is from someone physically located inside the corporate office. Which of the following would provide this functionality?
GPS GPS (Global Positioning System) devices are very useful for mapping travel routes and destinations, and the GPS locations can be used by an application to identify the location of the device.
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A company is building an ARM-based IoT device for the consumer market. Which of the following would be an advantage of using the ARM architecture for this product? (Choose TWO)
Lower power use, and Minimal heat ARM (Advanced RISC [Reduced Instruction Set Computer] Machine) processors use a simplified instruction set for efficient processing using relatively minimal power and heat.
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A technician is connecting USB interfaces on a computer case to the motherboard. Which of the following would be commonly used for this connectivity?
Headers A header, or pin header, is a group of pins on the motherboard. These pins provide connectivity to different motherboard features, such as power, lights, peripheral connections, and more.
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A manufacturing company uses a specialized printer which connects to a Windows computer over a USB connection. Which of the following would be the BEST way to allow all Windows devices in the company to send print jobs to this printer?
Configure Windows Printer Sharing Windows Printer Sharing allows the Windows computer to act as a print server. All devices on the network can view the printer and send print jobs to the printer using the Printer Sharing feature.
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Which of these would commonly be used to connect to an external storage device?
eSATA eSATA (External Serial ATA) is the external version of the SATA standard. The connectors for eSATA are slightly different than the internal SATA connectors.
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thirdparty lease. All of the computers prompt for a password when powering on the system before the operating system will load, but the password was not included with the computers. Which of the following would be the BEST way to resolve this issue?
Reset the BIOS using jumpers on the motherboard The BIOS (Basic Input Output System) of a computer can often be assigned configuration or management passwords to prevent any changes to the BIOS settings.
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A user has complained that a laptop will not charge the battery past 25% percent, and the laptop only operates for fifteen minutes when on battery power. The battery and the AC adapter have already been replaced. What next?
If the laptop will not charge a battery or power the system, then the entire motherboard will need to be replaced.
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A field engineer is working at a remote site that is under construction, but the site does not have an Ethernet or Wi-Fi Internet connection. Which of the following would be the BEST way to get access to the Internet at this location?
If Internet isn't currently available from another 802.11 wireless network, then using the hotspot feature can provide an option for Internet access.
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Which of the following would be the MOST likely reason the finishing function of a printer would punch two holes in a page instead of three?
The print driver is not configured properly. If the print driver is not set correctly, these options may be placed in the incorrect location or not used at all.
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A technician is upgrading the RAM on a laptop computer. Which of the following would BEST describe the memory required for this upgrade?
SO-DIMM The SO-DIMM (Small Outline Dual In-line Memory Module) form factor is about half the length of standard DIMMs. This smaller size makes it a common option for memory modules in laptop computers where size is limited.
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A hospital would like to use a hands-free authentication system based on the user's proximity to the computer. Which of the following technologies would be the BEST choice for this system?
An NFC-based authentication system would recognize when a user comes into close proximity of a device and provide the proper authentication.
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Daniel is building out a new floor of office space for his company. Which of the following cables would be the BEST choice to install in the active airspace above the drop ceiling?
Plenum-rated. The plenum space is the area above a drop ceiling used for building air circulation. Network cables in this area are categorized as plenum-rated, and their construction will limit smoke and toxic fumes.
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A developer is connecting a laptop to an LCD projector, but the projected image is flickering and occasionally part of the output will appear blocky and difficult to read. Which of the following should resolve this issue?
Replace the projector's video cable The visual "glitches" displayed by the LCD projector are often associated with a failure of the digital signal.
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A graphics designer needs to connect their macOS computer to a second monitor and an external storage drive. Which of the following interface types would provide this connectivity?
Thunderbolt. The Thunderbolt standard supports many different peripheral types, including displays, external storage, Ethernet network connections, and many others.
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What cloud-based service provides hardware, but still requires the user to setup, configure, and manage the operating system and applications?
IaaS IaaS (Infrastructure as a Service) is an option that provides CPU, memory, network connections, and storage, and the customer installs and manages all of the software running on the infrastructure hardware.
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Which of the following would be MOST associated with a SAN?
RAID A SAN (Storage Area Network) provides access to a relatively large storage system over the network. RAID (Redundant Array of Independent Disks) is a common method of providing data redundancy for storage
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A network administrator is using a laptop computer to configure a switch over a direct cable connection. Which of the following would BEST describe this connectivity?
Serial Most infrastructure devices provide a management or console interface over a serial link. These have traditionally used DB-9 (D-Subminiature size B - 9 pin) interfaces, but newer devices often use USB (Universal Serial Bus) connections.
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omplaining of slow performance on her computer. Initial troubleshooting shows low utilization of CPU and memory. A network speed test reports normal throughput to the local network devices. What next?
Perform a hard drive diagnostic If a slowdown is not associated with CPU, memory, or the network, then the issue may be with some other type of hardware. A diagnostic of the hard drive would identify any issues that may be slowing down
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A user is traveling and has enabled airplane mode on their laptop, but they would still like to use their wireless headset. Which of these settings should be enable
Bluetooth Bluetooth networks are PANs (Personal Area Networks) that provide a short-distance connection to local peripherals. For example, it's common to use a Bluetooth link to connect to headsets, wireless mice, keyboards, or
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moved a database server from a lab to a data center. After installing the server in a data center rack, the system does not power on. None of the system lights are on, and the power supply and cooling fans do not spin up. What to do first?
Check the power cable When troubleshooting, the easiest possible solution should usually be the first one to check. This particular system has already been in use, and the system administrator was the person who moved it from one location to another.
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A user has submitted a job to a network printer, but the printer will not begin to print until the user has typed their PIN on the printer console. Which of the following would BEST describe this sc
Secured print Secured prints With secured prints, the user can define a PIN (Personal Identification Number) on their computer, and this PIN must be used on the printer to start the printing process.
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troubleshoot a non-operational print server. The printer displays an error code on the front panel and does not respond to any user input. The system administrator has created a list of four theories that might cause this particular error. What next?
Test each theory on a lab system Before a plan of action can be established, it's important to know which plan to follow. Testing each theory can help determine which guesses might resolve the issue and which theories had no effect.
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Which of these devices sends incoming traffic to every other port on the device?
Hub A hub does not make any forwarding decisions based on the contents of a network frame. When the frame is received by the hub, it sends a copy of that frame to every other interface on the hub.
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Which of these wireless standards was the first to introduce 54 Mbit/sec throughput on the 2.4 GHz band?
802.11g 802.11g used the same 2.4 GHz frequencies as the 802.11b standard, but the maximum theoretical throughput was increased from 11 megabits per second to 54 megabits per second.
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An organization has implemented a cloud solution using a third-party data center. Access to the cloud service is available to anyone on the Internet. Which of the following describes this deployment model?
Public Public cloud deployments are for organizations that would like to provide services to anyone on the Internet. Google Mail is an example of a public cloud service.
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A user is reporting this message on their Windows computer taskbar icon: "Limited or No connectivity." Which of the following would be the best NEXT troubleshooting step?
Check the local IP address configuration The message of limited connectivity is usually based on a system with no access to network resources. This happens when a system is unable to contact a DHCP server and instead assigns itself an APIPA address.
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What voltages would be commonly found on a motherboard's power supply connector?
12 V DC, 5 V DC, 3.3 V DC A computer's power supply provides direct current (DC) at twelve volts, five volts, and 3.3 volts.
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What kind of device is installed into a computer and directly connects the computer to an Ethernet network?
NIC A NIC (Network Interface Card) is the hardware used to connect a device to a network. Some NICs are integrated into computer motherboards, and other NICs are separate interface cards.
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The network administrator needs to identify the ends of the cables so they can be properly terminated on each side. Which of the following should be used to complete this task?
Tone generator A tone generator places an analog audio tone onto the wires of a cable, and an inductive probe is used on the other end to precisely identify the cable with the tone.
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A server administrator has configured a database server with a RAID 0 array containing four hard drives. An error notification from the RAID controller states that disk 3 has failed. How to address?
Replace the drive and restore from backup RAID 0 (Redundant Array of Independent Disks, Level 0) provides an efficient storage method at the expense of redundancy.
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A company is installing a new communications link using SC interfaces. Which of the following would BEST describe this connection?
Fiber optic An SC (Subscriber Connector) interface is a common fiber optic connection type. Some network administrators refer to this connection as the "square connector" due to the unique shape of the interface.
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A server administrator has replaced a bad hard drive in a RAID array and has verified the array is operating with full functionality. Which of the following would be the best NEXT troubleshooting step?
Document the drive replacement After an issue has been resolved, the last step of the troubleshooting process is to document the issue, the solution, and any important details identified during the troubleshooting process.
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An application developer is designing an app which uses three servers running simultaneously as VMs on her desktop. An upgrade to the application will add three additional servers to the list of running VMs. Most important upgrade?
RAM Without any additional information about the applications, the most critical resource for these new servers will be the amount of RAM required to keep all of the operating systems running simultaneously.
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A company has experienced a significant increase in printing costs over the last few months. Which of the following would provide the best way to track and manage these costs?
Audit logs Audit logs can be used to provide detailed information about print jobs, number of pages printed, the usernames submitting the print jobs, and much more.
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newly installed DSL connection. A laptop is connected to a DSL router over twisted pair copper. newly installed DSL connection. A laptop is connected to a DSL router over twisted pair copper. What next?
Check the status of the DHCP server A DHCP (Dynamic Host Configuration Protocol) server automatically distributes IP addresses to new devices connecting to a network.
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A user in the accounting department has configured their mobile phone as a hotspot. Which of these would BEST describe this configuration?
Access the Internet through the phone Many smartphones include a hotspot feature, allowing a user to turn their phone into an Internet router.
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An organization has recently implemented a browser-based email system that requires no additional software on the user devices. Which of the following would describe this type of application?
SaaS SaaS (Software as a Service) is on-demand software. The client does not maintain a local software installation, and the application support is managed by the service provider. Google Mail is an example of SaaS.
220
What type of power supply can operate across countries using different voltages?
Auto switching An auto switching power supply can automatically detect and use different input voltages without the need to manually select an input voltage
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A user is reporting after starting their desktop, they receive the message “Windows has detected an IP address conflict.” Which of the following would be the BEST way to resolve this issue?
Enable DHCP on the workstation. If a device is configured for manual addressing, then configuring the device to receive IP addresses via DHCP can avoid possible address duplication.
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Which of the following would be used to terminate a copper Ethernet patch cable?
RJ45 Copper Ethernet cables are commonly terminated with an 8P8C (Eight Position / Eight Conductor) RJ45 (Registered Jack 45) standard connector.
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A technician has replaced a laser printer toner cartridge, but now the output does not appear as dark as the original toner cartridge. Which of the following would be the best way to address this
Run a printer calibration A laser printer calibration allows the user to adjust the amount of toner used for the output.
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A system administrator has just received a laptop previously sent out for repair. However, after powering on the computer, the laptop no longer responds to the stylus. Which of the following is the MOST likely reason for this issue?
The digitizer is faulty The digitizer converts the touch of a finger or a stylus to digital signals used by the computer. If the digitizer is not operational, then the screen will not be able to interpret the input from a stylus.
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A graphics designer has noticed that small dots on their screen remain a solid black color, even when the image should display a different color. Which of the following would describe this issue?
Dead pixel A dead pixel is a single dot (pixel) on the screen that always remains black and does not change with the image.
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The computer operates as expected for web browsing and word processing applications. However, playing a game results in the system shutting down after a few minutes of operation. Why?
Power supply Adding additional components to a computer can often increase the power usage, and video adapter cards are one of the most power-hungry devices you can add to a computer.
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A network administrator has just installed a new access point in a downtown office building, but now users are reporting intermittent connectivity to the Internet. Which of the following would be the FIRST thing to check?
Channel interference levels. it's possible that the frequencies used on different wireless access points could conflict with each other and cause interference with wireless communication.
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A company would like to advertise a list of email servers authorized to send messages on their behalf. Which of the following would be the BEST way to provide this information?
SPF record An SPF (Sender Policy Framework) record is part of a DNS (Domain Name System) server configuration, and it lists all servers authorized to send emails for a particular domain.
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A company assigns IP addresses automatically to each device, and those addresses will remain on the device for a minimum of 8 hours. Which of the following BEST describes this configuration?
Lease A lease is used in DHCP (Dynamic Host Configuration Protocol) to automatically associate an IP address configuration with a specific device for a certain amount of time.
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reporting that one network printer is not working. There are many print jobs in the queue, but none of the jobs are printing. A test print from the printer's front panel does not print any pages. Why?
Printer hardware has failed If the printer was operational, then a printer test from the front panel should provide some output.
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A member of the accounting department would like to work remotely while attending a conference in another city. Which of these technologies would BEST provide this functionality?
VPN A VPN (Virtual Private Network) would allow a remote user to connect to the corporate office over a secure encrypted tunnel.
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In which of the following situations would you be MOST likely to use a network tap?
Capture packets from a network link A network tap provides a physical connection for intercepting network traffic. The tap can send a copy of the intercepted traffic to a packet capture device or security tool.
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A digital graphics department has been using a SAN to store their image files. The team now reports that all of the files on the SAN are no longer accessible. Which of the following should be the FIRST thing to check on the SAN?
RAID array status A SAN is a network-connected storage array. If the SAN is unavailable, then it's possible that the drive array is having a technical issue. The first thing to check on the SAN is th
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What is SAN?
Storage Area Network
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A network administrator is installing a new access point between buildings. Which of the following would determine the usable frequencies and maximum signal strength for this connection?
Government regulations Most governments will regulate the usable frequencies and maximum power for the wireless spectrum. These regulations can vary depending on location, frequencies, or type of network.
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C:\Users\professor>ping 9.9.9.9 Pinging 9.9.9.9 with 32 bytes of data: Reply from 9.9.9.9: bytes=32 time=618ms TTL=128 times 4, 4 Sent no Lost. What is this?
Excessive latency. This large response time indicates significant latency between the local device and the remote site.
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A system administrator needs to upgrade the hard drives in a RAID array. Which of the following would be the BEST measurement of read and write times on the new hard drives?
IOPS IOPS (Input/Output Operations Per Second) is a measure of read and write performance, and it provides a good comparison of performance between different storage devices.
235
A user in the marketing department is printing to a color printer, but the colors on the output don't match the colors on the screen. Which of the following would be the BEST next step?
Calibrate the monitor and printer For the best possible color match, it's important to calibrate the monitor and the printer. This calibration process will ensure the colors seen on the screen will match the tone and hue of the final output.
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A technician notices that the screen remains dark, but fans are spinning inside of the computer case. No messages are displayed and no beeps are heard. Which of the following would be the MOST
Bad power supply A bad power supply can sometimes provide power for some voltages but not others. If the fans are running but no other devices are working, then a bad power supply should be a consideration.
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A company has installed a page scanner that outputs the scanned files to SMB. Which of the following would be the MOST likely destination for these scanned images?
Windows share Windows uses the SMB (Server Message Block) protocol to transfer files between other Windows devices. SMB is commonly used to transfer files to a Windows share.
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The network status shows a yellow exclamation mark with the message “No Internet access.” the cable sheath is an inch short and individual copper wires are visibly disconnected. What to use? disconnected from the RJ45 connector.
Crimper A crimper is used to attach modular connectors to the end of cables. In this example, the cable would be cut back past the missing cable sheath and the wires would be attached to a new connector using an RJ45 crimper.
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A network administrator needs to connect two sites located on opposite sides of the city. Which of these network connections would be the MOST appropriate?
MAN A MAN (Metropolitan Area Network) connects locations in the same city or metropolitan area. Once the distance is outside the scope of the immediate metro area, the connection is categorized as a WAN
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Which of the following would be the BEST way to remove toner and paper dust from the inside of a laser printer?
Wipe the inside with a damp cloth There can be a significant amount of dust and toner particles inside of a laser printer, and using a normal vacuum cleaner or compressed air would release the particles into the air.
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A system administrator is connecting a remote site to the Internet over a single pair of copper wires. Which of the following is the administrator using for this installation?
DSL modem. DSL modems connect to this pair of wires and convert the signal to an Ethernet connection for other devices.
240
Which of the following would most commonly be associated with a thermal pad?
Connect a heat sink to a processor A thermal pad can be used to improve thermal conductivity between a hot component and a heat sink. Thermal pads are somewhat easier to install than traditional thermal paste.
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What does an Access point do?
An access point provides a bridge between a wired Ethernet network and an 802.11 wireless network.
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What does a patch panel do?
A patch panel is commonly used to terminate connections between network runs.
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What does an ONT do?
is a device installed at the demarcation point between a network service provider's fiber optic connection and your internal copper network connections.
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What do cable modems do?
are often all-in-one devices that terminate a cable modem Internet link, provide routing to a private internal network, and connect multiple internal devices with a built-in switch.
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Black vertical line runs down the length of the page
Scratched photosensitive drum
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The output prints in the wrong color
Ink cartridge is low
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Toner smears and wipes off the paper
Fuser is not operational
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Output shows non-readable garbled characters
Incorrect page description language
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A ghost image is printed on the same page as the original
Drum not cleaning properly
249
What does MIMO stand for?
MIMO (Multiple-Input Multiple-Output)
249
What frequency does 802.11g use? Does it include MIMO features?
2.4GHz and no support
250
What frequency does 802.11n use? Does it include MIMO features?
2.4HGz or 5ghz. Supports 4 MIMO
251
What frequency does 802.11ac use? Does it include MIMO features?
5GHz. Supports 8 MU-MIMO
252
What frequency does 802.11ax use? Does it include MIMO features?
2.4HGz or 5GHz. supports MU-MIMO
253
What does MU-MIMO stand for?
Multi-user MIMO Multiple-Input Multiple-Output
254
Internal SSD storage drive
SATA (Serial AT Attachment) is a common high-speed storage connection for both desktops and servers.
255
Router configuration interface
DB-9. If you're a field technician, then you'll almost certainly have a serial cable with a DB-9 (D-subminiature size B, 9 pin) connection for direct configuration of routers, switches, and other infrastructure devices.
255
Ethernet network
The RJ45 connection is the standard connector for Ethernet networking over copper cabling.
256
Molex connectors
are four-pin power plugs that are primarily used for components on the inside of a computer case.
257
F-connectors
are the threaded connectors commonly used on cable television and cable modem coax cables.
258
What protocol is used to Query a database of users and devices
tcp/389 LDAP (Lightweight Directory Access Protocol) is used to query an online directory of users, devices, and anything else that might need to be referenced. LDAP is often used to verify authentication to an application or service.
259
A system administrator has been assigned the task of installing an operating system, application, and data onto a cloud-based server. Which of these best describes this scenario?
Infrastructure as a Service IaaS (Infrastructure as a Service) provides the CPU, memory, storage, and other infrastructure components necessary for the installation of an operating system and application.
260
A network engineer is installing a device allowing wireless devices to access the wired Ethernet network. Which of the following would BEST describe this technology?
Access point An access point bridges the 802.11 wireless network with a wired Ethernet network. Since the access point is acting as a bridge, it's making forwarding decisions based on the destination MAC address of the network frame.
260
new video adapter to a desktop computer, installed the latest video driver, and rebooted the system. When the system starts, it shows a Windows Stop Error before it reaches the login prompt. What next?
Press F8 during startup and choose “Boot from last known working configuration” If a recent configuration causes a boot issue, Windows can restart the operating system using the last known working configur
261
Which of the following would provide segmentation of broadcast domains on the same physical switch?
VLAN A VLAN (Virtual Local Area Network) is used to segment interfaces on a single switch or across multiple switches. This allows a network administrator to separate networks on a single switch instead of installing
261
A user's smartphone contains both personal and corporate data. When the user attempts to install a new app, the installation is halted and an error message appears. Which of the following would be the MOST likely reason for this issue?
MDM MDM (Mobile Device Management) provides centralized management for mobile devices. An MDM can be used to set policies on app use, data storage, camera use, and almost any other feature on the smartphone.
261
A system administrator is configuring a lab computer that will run five server VMs at the same time. Which of the following hardware resources will be the MOST important for this configuration?
Storage space Adding five virtual machines to a single device would require as much storage space as five separate operating systems. Of the available options, the system storage will be used the most.
261
During a presentation in a conference room, the lamp in an LCD projector is turning off after five minutes of use and back on ten minutes later. Which of the following would be the MOST likely reason for this issue?
The cooling process is failing If an LCD (Liquid Crystal Display) projector becomes overheated, it will automatically turn off to protect the bulb and other components.
261
A user is reporting every page printed from a networked laser printer appears as garbled graphics and text characters. Which of the following is the MOST likely cause of this issue?
Incorrect printer driver The printer driver formats the print job into a language that the printer can understand.
262
During a presentation in a conference room, the lamp in an LCD projector is turning off after five minutes of use and back on ten minutes later. Which of the following would be the MOST likely reason for this issue?
The cooling process is failing If an LCD (Liquid Crystal Display) projector becomes overheated, it will automatically turn off to protect the bulb and other components.
263
memory upgrade on a database server. When starting the system, this message is displayed: “Boot Device Not Found.” The BIOS configuration does not show any hard drives in the system. What next?
Check the hard drive cables A memory upgrade would require work inside of a computer case, and it's very easy to accidentally unseat or disconnect other cables.
264
If a laptop's inverter is faulty, which of the following would be the MOST likely result?
The screen will be difficult to see. Without the backlight, it will be very difficult to see the information displayed on an LCD (Liquid Crystal Display) screen.
264
What is the most common use for the switch on a computer’s power supply?
Sets the input voltage. Many power supply units are auto-switching, and they will automatically adjust between 120 volts and 240 volts based on the input voltage.
265
Which of these devices would be used to configure an 802.1Q trunk?
Managed switch A managed switch includes features not found in an unmanaged switch, such as traffic prioritization, redundancy support, remote management, and VLAN (Virtual Local Area Network) support for connectivity to other switches via 802.1Q.
266
A user in the manufacturing department would like to synchronize their cloud-based Outlook emails and calendar to their iPhone. Which of the following would be the BEST method of managing this data?
Add the user's Microsoft 365 account to the iPhone The iOS operating system includes integrations for iCloud, Google, Microsoft, and other types of accounts.
266
A network administrator needs to connect an Ethernet link between two buildings located across the parking lot from each other. The total distance between the buildings is approximately 400 meters. Best cable for the job?
Fiber Fiber optic communication can extend over very long distances using light instead of radio frequencies
267
A systems administrator needs to configure a smartphone to retrieve email messages from the corporate mail server. Which of the following protocols could be configured for this purpose? (Pick T
IMAP and POP3. Two common protocols used to retrieve email messages are IMAP (Internet Message Access Protocol) and POP3 (Post Office Protocol 3).
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An administrator would like to ensure the company's mobile devices are connecting to the appropriate towers. Which of the following provides a
PRL Some cellular providers will maintain a PRL (Preferred Roaming List) with information on how the phone should connect to the desired cellular tower. This PRL is often updated OTA (over the air).
269
Which of these cloud computing architectures would BEST describe several organizations sharing the sam
Community A community cloud model is often used by multiple organizations to build a pool of resources with their combined financial contributions.
270
What port should be configured in a firewall to block secure terminal?
22 Port 22 is used by SSH (Secure Shell), the encrypted terminal communication protocol.
271
The cooling fan controller in a server is failing. The server administrator has tested possible reasons for the failures and has created a plan for correcting the issue. What next?
Present the plan to the change control team Change control is an important part of the troubleshooting process for any organization. When the change control committee approves the plan, the fix can be tested and the issue can be documented.
272
A desktop administrator is troubleshooting an LCD display that shows a faint image at the bottom right of the screen. The faint image is displayed even when spreadsheets or browser screens are shown. Why?
Burn-in If an image is shown on a screen for an extended period of time, the display may continue to show a faint "ghost" of the image after the display has changed. This burn-in may be temporary, but it can be permanent in extreme circumstances.
273
A systems administrator is troubleshooting a Windows laptop that boots normally but becomes sluggish after login. Which of the following would provide the BEST source of troubleshooting information?
Task Manager statistics Task Manager can provide real-time performance information and can list the applications automatically launched during the startup process
273
would like to make sure that the punch-downs and crimps are connected to the correct pins on each side. Which of these tools would be the best way to confirm the wiring map?
Cable tester A cable tester can quickly perform a wire map to determine if all of the wires were properly crimped or punched down on both ends of the cable.
274
An administrator is building a new server, and they would like the server to continue operating if the power supply fails. Which of the following would provide this functionality?
Redundant power supplies One way to avoid an outage after a power supply failure is to have multiple power supplies installed and running.
275
A user in the shipping department would like to connect multiple displays to a desktop computer. Which of the following would support this requirement? (Pick TWO)
HDMI and DVI-D HDMI (High-Definition Multimedia Interface) and DVI-D (Digital Visual Interface-Digital) are two common video connection types.
276
A user is trying to charge their smartphone using the built-in USB interface, but the phone does not show the charging icon and the battery does not charge. Why?
Damaged charging port A damaged charging port would prevent the battery from charging through a connected USB cable.
277
A network administrator has configured a wireless network to use a 160 MHz channel width on the 5 GHz band. Which of these wireless standards is in use?
802.11ax The 802.11ax (or Wi-Fi 6) standard can operate at 2.4 GHz or 5 GHz, and supports 20, 40, 80, and 160 MHz channel widths.
278
A network engineer is installing a cable modem at a remote site. Which of these connectors would commonly be found on a cable modem?
F-connector The F-connector is the common coax screw-on connector used for television cable or cable modems. A cable modem installation will often use coax from the cable provider, and the F-connector is used to connect the coax to the cable modem.
278
just upgraded the memory on a desktop computer. After the computer runs for a few minutes, the system locks up completely and does not respond to keyboard or mouse input. After rebooting, no error messages are found in Event Viewer. What next?
Run hardware diagnostics Issues that result in the system hanging without any additional information can be frustrating to troubleshoot
279
Which of these network types would MOST likely be categorized as a WAN?
A point-to-point connection to an office in another country WAN (Wide Area Network) connections are between locations in different cities, states, or countries.
280
A technician is connecting two buildings using a fiber optic link. Which of these connectors would be commonly associated with this media type?
SC An SC (Subscriber Connector or "Square Connector") interface is a common type of connection for fiber optic terminations.
281
Which of the following devices makes forwarding decisions based on destination IP address?
Router A router decides the next hop of an packet based on the packet's destination IP (Internet Protocol) address.
282
A system administrator is configuring the IP address settings on a remote server. Which of these settings would enable the server to communicate with other devices using a fully qualified domain name?
DNS A DNS (Domain Name System) server provides the conversion between fully qualified domain names and IP (Internet Protocol) addresses. With a DNS, we can refer to servers by their name instead of using IP
283
Which of the following best describes elasticity in cloud computing?
Cloud resources can scale up as needed Rapid elasticity is a cloud computing characteristic that allows the scaling up and down of cloud-based applications on an as-needed basis.
283
What type of network connection is commonly used by DSL?
Twisted pair copper DSL (Digital Subscriber Line) networks use the same twisted pair copper as traditional phone lines.
283
A workstation is configured with a video card that outputs DVI-D, but it needs to connect to an LCD projector with an HDMI connection. Which of the following would be the BEST way to connect this workstation to the projector?
DVI-D to HDMI adapter DVI-D (Digital Visual Interface-Digital) and HDMI (High-Definition Multimedia Interface) are electrically compatible and only require an interface adapter to connect between devices.
283
An administrator is building a computer system to stream live corporate events. Which of the following should be installed to provide input for the live stream?
Capture card A capture card can be used as an input for video and audio. This input can be stored on a drive or used as input to a streaming service.
284
A user in the accounting department had a new laptop delivered and installed, but they are reporting that the network throughput seems much slower than the previous computer. Why?
Duplex mismatch A mismatch of half-duplex and full-duplex will not cause a total disruption of network communication, but it will cause the network to perform slowly.
284
eight core CPU. When viewing information in Windows Task Manager, the utility shows CPU performance for sixteen different processors. Which of the
The CPU supports multithreading Multithreading provides additional processing efficiency by treating a single CPU (Central Processing Unit) as multiple processors.
285
A system administrator needs to test a new application simultaneously across macOS, Windows, and Linux. Which of the following would be the BEST choice for this requirement?
Cross-platform virtualization Cross-platform virtualization allows the user to run multiple operating systems simultaneously.
286
A company would like to configure a Sender Policy Framework (SPF) record in their DNS. Which of the following should be configured in the DNS server?
TXT The TXT, or text record, can be used in a DNS server to specify the SPF information. The SPF record documents the list of email servers authorized to send emails for the domain.
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IP address is 192.168.1.5, subnet mask is 255.255.255.0, the default gateway is 192.168.1.1, and DNS are 10.2.2.1 and 10.2.2.2. A technician can successfully ping the local IP address, the default gateway, and Google's
The DNS servers are faulty The DNS servers are responsible for converting a qualified domain name to an IP address. If the DNS servers are not working, then an IP address for a de
288
Which of the following would be MOST commonly associated with the management interface on a switch?
DB-9 The serial connectivity used with a DB-9 (D-subminiature size B, 9 pin) interface is usually associated with management ports on switches, router, and other infrastructure devices.
289
A user in the facilities department is having an issue printing their blueprints to a network laser printer. When they pick up their output, the page contains specks and small dots randomly printed on the page with
Optical drum is not clean. If the cleaning process isn't working properly, extra toner will remain on the drum and can be transferred to the next section of the page output as dots or specs
290
A user would like to ensure all apps on their smartphone use 802.11
Enable data caps
291
A network administrator is installing an Ethernet cable containing gel and a ground wire. Which of the following would MOST likely describe this cable?
Direct burial A direct burial cable is designed to be installed in the ground, so it includes waterproof gel to protect the copper cables. The cables also include a ground wire to support an electrical ground.
292
A Windows computer is configured to obtain an IP address automatically. Which of the following would occur if the automatic assignment process was not working?
A link-local address would be assigned If a device is configured to obtain an IP address from a DHCP server and the DHCP server is not available, an APIPA (Automatic Private IP Addressing) address, or linklocal address, would be assigned.
293
A web server administrator has received a notification that disk 1 in a RAID 5 array has failed. Which of the following would be the BEST next step to resolve this drive failure?
Replace disk 1 and rebuild the array. To resolve this issue, the bad drive would need to be replaced, and the array would rebuild the data on the new drive using the redundant data from other drives.
294
A high speed network provides access to a large array of hard drives. Which of the following would best describe this type of network?
SAN A SAN (Storage Area Network) is a high-speed network connecting users with large data stores. The SAN looks and feels like a local storage device, and provides block-level access for efficient reading and writing.
295
A user in the accounting department is reporting that all of the printed pages from a networked laser printer are completely blank. Nothing appears to be written on any of the printed pages. W
Toner cartridge is faulty If the toner cartridge is completely empty or is not properly providing toner to the printer, then nothing will be printed on the final output.
296
A systems administrator has just installed a new server in a data center. When pressing the power button, there’s no response from the server, no lights appear on the front display, and no fans are spinning. Why
The power supply switch is set to the wrong input voltage If the data center power provides 120 volts and the computer's power supply is set to 240 volts, the computer will not be able to start.
297
Which of the following services would automatically provide an IP address to any device connected to the network?
DHCP DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to network devices.
298
A network administrator is installing a network link containing an LC connector. Which of the following would be the MOST likely connection for this link?
Link between buildings Connections between buildings tend to exceed the distance allowed for copper cabling, so fiber optics are often used to communicate over this extended distance.
299
What does LC stand for?
Lucent Connector
300
What is a Lucent Connector?
is a common fiber optic connector.
301
An operating system is transferring unused application data from memory to the local storage drive of the computer. Which of the following would BEST describe this memory technology?
Virtual Most operating systems can create free RAM (Random Access Memory) space by temporarily swapping unused application data to the local storage drive. This technology is often called virtual memory, virtual RAM, or a
301
A server administrator is building a web server with three hard disk drives. The storage for the server requires the fastest possible access and redundancy is not a primary requirement. Which of the following would be the BEST choice for this server?
RAID 0 RAID (Redundant Array of Independent Disks) level 0 does not provide any redundancy, but it will efficiently stripe data across multiple drives.
302
A network engineer is troubleshooting the connection of a tablet to a cellular provider’s network. Which of these would BEST describe this network connection?
Long Term Evolution Long Term Evolution, or LTE, is a converged standard used by mobile providers to provide high-speed communication over cellular frequencies.
303
A developer has requested a server for testing a new application. To complete this request, the system administrator logs into his cloud console and allocates a new server configuration. What best tells the process of creating this server?
Shared resources. As new cloud-based systems are created, the CPU, memory, storage, and other technologies needed to build these systems are allocated from this central pool of shared resources. .
304
Which of the following would be the most efficient method of migrating from an HDD to an SSD?
Perform a drive-to-drive image A drive-to-drive image is a fast way to migrate from one drive type to another. Both drives are online at the same time, and third-party software
305
A technician is installing a CPU and heat sink into a new system. Which of the following should be used with these two components?
Thermal pad. moves heat from the CPU (Central Processing Unit) into the fins of the heat sink, and that heat is moved out of the system using the computer's cooling system.
306
The fans on a desktop computer are not able to move enough air to keep the system cool. A technician finds a significant amount of airflow is restricted by the internal wiring inside the computer case. How to fix?
Modular power supply. allows the technician to add or remove power cables as needed, so unused cables would not be attached or installed inside of the computer case. This keeps the number of cables inside the computer to a minimum and creates air flow
307
The mouse on a desktop computer has stopped operating. Which of the following would be the best NEXT troubleshooting step?
View the log files The first step of the troubleshooting process is to identify the problem. Before making any changes, it's important to research the issue and gather as much information as possible.
308
viewing the interface statistics on a WAN router and has noticed that error rates are increasing. The administrator has replaced the WAN cables, but the errors continue. Which of the following tools should be used to BEST troubleshoot this issue
Loopback plug A loopback plug is useful when running diagnostics on a device interface. Data is sent out an interface, and the loopback plug redirects that data back to the same interface.
309
Which part of the laser printing process requires extensive use of printer memory?
Processing The processing phase is the first phase of the laser printing process. The printer builds the entire page in memory before the rest of the
310
print some customer letters on company letterhead, but there are no messages on the printer and no pages are printing. Upon examining the queue, five print jobs are pending and waiting to print. Why?
Print spooler has crashed The print spooler is responsible for storing print jobs, queuing them, and sending them to the printer. A print spooler crash would cause all print
311
purchase a system to be used as a database server. One of the specifications for the server requires the system to detect and correct memory errors during operation. What's best?
ECC ECC (Error Correcting Code) memory is designed to both identify memory errors and correct them if possible. It's common to see ECC RAM (Random Access Memory) used in servers to minimize any potential downtime.
312
A system administrator is replacing a cracked LCD display on a Windows laptop. Which of the following would be the MOST important component to test after this replacement?
Wireless network The antenna wires of the 802.11 wireless and Bluetooth adapters
313
Which of the following would be MOST associated with M.2?
SSD SSDs (Solid State Drives) are storage devices with non-volatile memory and have no moving parts. The M.2 interface is a small form factor
314
smartwatch is not synchronizing with her mobile phone. The phone is powered on and unlocked, but the phone does not show the smartwatch in a
Enable Bluetooth on the smartwatch The PAN (Personal Area Network) used for connectivity between local devices is Bluetooth, so enabling Bluetooth on the smartwatch
315
high-resolution gaming displays has a highend video adapter and DisplayPort video connection. The computer works properly for word processing and spreadsheets, but it powers down after
The CPU fan is faulty If a system powers off after some intense CPU (Central Processing Unit) utilization, then the issue is most likely associated with heat or
315
A network administrator has created a configuration for a server using the same IP address each time the server is started. Which of the following would BEST describe this configuration?
IP reservation An IP (Internet Protocol) reservation is usually configured on a DHCP (Dynamic Host Configuration Protocol) server to ensure that specific
316
A cloud-based application is distributed across multiple data centers and will continue to operate if any of the data centers have an outage. Which of the following characteristics would BEST describe this configuration?
High availability High availability ensures that a service will always be available regardless of what might occur behind the scenes. Redundant systems are commonly used to provide high availability.
317
installing a new copper gigabit Ethernet connection, but when they plug in the network cable the status light indicators are dark. Why?
There is no signal on the Ethernet cable A least one light on the Ethernet adapter is commonly associated with the link status. The link light will turn on if a signal is identified on the Ethernet cable.
317
Before powering off, the phone displays the message, “High temperature detected.” The phone is used inside the building at room temperature and is not used in direct sunlight. Why?
An app is using a large amount of CPU Electronic devices generate a lot of heat, and the amount of heat from a CPU increases dramatically as it is used.
317
A technician has two hard disk drives that need to be configured redundantly, and all information should be duplicated across physical drives. Which of the following should be configured?
RAID 1 A RAID 1 (Redundant Array of Independent Disks) array keeps an exact duplicate of data across multiple drives. If one drive fails, the other drive containing the duplicated data continues to provide access to the data.
317
The computer made an unexpected loud pop and immediately powered down. The computer would not respond to additional attempts to power it back on. What happened?
Faulty capacitor Not all capacitors pop when they fail, but often a loud pop inside of a computer is related to a blown capacitor
317
It takes sixty seconds to load a file that previously took five seconds, and an ongoing clicking noise can be heard when accessing the data. The CPU and memory utilization statistics show minimal
Replace the hard drive Slow file access and a low amount of memory and CPU utilization indicates a problem with the hard drive. Performing a backup and replacing the drive should return the system to normal operation.
318
connected a desktop computer to a new LCD. After connecting the monitor, all of the desktop icons and windows appear oversized and the display appears to be fuzzy and out of
Modify the display resolution. If the resolution is set relatively low, the screen information will appear larger than a higher resolution and the output would appear blurry or fuzzy.

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