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1
Q

IOPS

A

input/output operations per second

measurement of performance used to compare a hard disk drive (HDD) and solid-state device (SSD

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2
Q

Seek time

A

calculates the time it takes to move the head to the proper storage location on the platter

there is no seek time used since it can instantly access any portion of the memory without physically moving a read head

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3
Q

hypervisor

A
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4
Q

NIC

A

Network Interface Card

Need more

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5
Q

Jitter

A

network condition that occurs when a time delay in the sending of data packets over a network connection occurs

variation in the delay of the packets, and this can cause some strange side effects, especially for voice and video calls

big problem for video conferences, voice over IP

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6
Q

Latency

A

measure of time that it takes for data to reach its destination across a network

we measure network latency as the round-trip time from a workstation to the distant end and back

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7
Q

Bandwidth

A

maximum rate of data transfer across a given network

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8
Q

Straight Tip or ST

A

Straight Tip (ST) fiber connections are commonly used in fiber optic connections in LAN networking applications.

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9
Q

MTRJ

A

MTRJ is commonly used to connect fiber optic cables to a switch or router, but it uses a single connector that houses the Tx and Rx connections.

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10
Q

RJ-45

A

RJ-45 is used by twisted-pair copper cables for local area network and ethernet connections.

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11
Q

RJ-11

A

RJ-11 is used by twisted-pair copper cables for telephone applications.

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12
Q

small outline dual inline memory module (SODIMM) is what?

A

various types and sizes to fit any laptop, router, or other small form factor computing device.

if you are ever asked about installing memory in a small form factor device or a laptop, the answer will usually be SODIMM.

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13
Q

dual in-line memory module (DIMM is what?

A

comprises a series of dynamic random-access memory integrated circuits.

A DIMM is used in workstations and printers due to its larger size and shape.

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14
Q

Rambus dynamic random access memory (RDRAM) or RAMBUS

A

memory subsystem designed to transfer data at faster rates

Rambus has not been used for several years and is considered a legacy technology.

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15
Q

SDRAM (synchronous DRAM)

A

generic name for various kinds of dynamic random access memory (DRAM) that are synchronized with the clock speed that the microprocessor is optimized for.

This tends to increase the number of instructions that the processor can perform at a time.

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16
Q

Wireless networks are configured to use what 2 frequencies

A

2.4 GHz or 5.0 GHz frequencies

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17
Q

802.11a and 802.11ac both utilize what frequency?

A

5.0 GHz

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18
Q

802.11b and 802.11g both utilize what frequency?

A

2.4 GHz

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19
Q

802.11n and 802.11ax utilize what frequency?

A

2.4 GHz and 5.0 GHz

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20
Q

printing fading occurs when what happens?

A

ink or toner is running low.

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21
Q

SATA stands for?

A

Serial Advanced Technology Attachment

internal connector for adding storage

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22
Q

duplicate MAC address occurs when…?

A

two or more devices are responding to data requests as if they are the only device on the network with that physical address.

switch continually changes the port assignments for that address as it updates its content-addressable memory (CAM) table to reflect the physical address and switch port bindings. This will cause the switch ports to continually flap by going up and down as the assignments are updated within the CAM table

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23
Q

Interference occurs when

A

electrical signals are sent and received in the same frequency band as your network traffic

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24
Q

Duplicate IP addresses occur when

A

two devices are issued the same IP by a DHCP server or are using identical static IP addresses.

Duplicate IP addresses will cause routing issues, but they will not cause port flapping on a switch

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25
wireless access points should always be configured with channels
1, 6, or 11 to maximize the distance between channels and prevent overlaps. 1, 6, and 11, however, are far enough from each other on the 2.4GHz band that they have sufficient space between their channel centers and do not overlap
26
If the lights are steady on a network interface card (NIC), it indicates what
there is no network activity. If it is blinking, this indicates that data is passing over the NIC to the network.
27
Quality of Service (QoS) means
a network protocol to prioritize certain traffic types over others. Enterprise networks can use QoS protocols to make sure traffic such as Voice over IP calling or video conferencing is given higher priority than traffic where packets' timing is less important, such as ordinary file downloads
28
MAC filtering, allow lists, and ACLs are used to...
Block traffic NOT prioitize it
29
If a new drive is not recognized....
it is an issue with the motherboard's firmware. This needs to be updated
30
Attenuation means
the loss of signal strength due to external or internal factors
31
If burn-in was experienced on old CRT monitors, you could run what?
a degaussing program to erase the burn-in.
32
Replacing a DC jack requires
assembling the laptop, de-soldering and removing the old jack, then soldering the new jack into place.
33
What's the difference with 2.4 GHz and 5.0 GHz
2.4 GHz frequency has a longer wavelength than the 5.0 GHz frequency. The longer wavelength gives it the ability to cover a longer range using the same power output levels. The longer wavelength of 2.4 GHz makes it better at propagating through solid surfaces than the 5.0 GHz frequency.
34
Private cloud
private cloud is dedicated to a single organization, offering greater security, control, and compliance compared to public cloud environments.
35
Community Cloud
A community cloud is shared among multiple organizations with common interests or regulatory requirements.
36
Hybrid Cloud
combine elements of both public and private clouds but do not provide the same level of dedicated control as a private cloud. seamless integration of both onsite and cloud services to the end-user simultaneously
37
Public Cloud
provides resources to multiple organizations and individuals, reducing control and security.
38
Trusted Platform Module (TPM)
hardware-based cryptographic processing component that is a part of the motherboard.
39
Pluggable Authentication Module (PAM)
Device that looks like a USB thumb drive and is used as a software key in cryptography
40
role-based access control (RBAC) restricts
Access to virtual machines based on the user's role within the organization, ensuring only authorized personnel can modify or access resources.
41
Multitenancy allows
multiple customers to share the same physical resources securely while maintaining isolation between their data and workloads
42
PCIe (Peripheral Component Interconnect Express
uses lanes between any two intercommunicating devices. This utilizes a separated pair of wires for both directions of traffic. This increases the bus lanes' speed since there is no possibility of collisions or waiting for other devices to finish communicating.
43
AGI, PCI, PCI-X
AGP, PCI, and PCI-X are older technologies that rely on shared busses for communication
44
accelerometer
track movement in every direction
45
inverter does what?
acts as the power supply for this lighting source. in the laptop display assembly
46
DNS text (TXT) record lets
domain administrator enter text into the Domain Name Systems.
47
simple network management protocol (SNMP)
protocol for monitoring and managing network devices over UDP ports 161 and 162
48
NVMe is similar to...
SSD
49
A VLAN (virtual LAN) allows
Single physical switch to be divided into logical networks. VLANs are only supported on managed switches, but they allow for a different logical subnetwork address to be assigned to various ports on the switch.
50
digital subscriber line (DSL) modem is
a device used to connect a computer or router to a telephone line, which provides the digital subscriber line service for connection to the Internet.
51
Infrastructure as a Service (IaaS)
cloud computing service that enables a consumer to outsource computing equipment purchases and run their own data center. If you purchase a server in the cloud and then install and manage the operating system and software, this is IaaS.
52
Software as a Service (SaaS)
cloud computing service that enables a service provider to make applications available over the Internet to end-users. This can be a calendar, scheduling, invoicing, word processor, database, or other programs. For example, Google Docs and Office 365 are both word processing SaaS solutions.
53
mITX (Mini-ITX)
mITX contains a smaller footprint than the other options presented and measures only 6.7" x 6.7" in size.
54
mATX (microATX)
motherboard's form factor is 9.6" x 9.6" in size (24 cm x 24 cm). middle
55
ATX
TX motherboard's form factor is 12" x 9.6" in size (305mm x 244mm largest
56
ipconfig /flushdns
provides you with a means to flush and reset the contents of the DNS client resolver cache. During DNS troubleshooting, if necessary, you can use this procedure to discard negative cache entries from the cache, as well as any other dynamically added entries.
57
wireless LAN (WLAN
connects computers within a small and specific geographical area using the 802.11 protocols for their wireless connections
58
wide area network (WAN)
network that spans multiple geographic locations, such as the internet. Wide area networks are often established with leased telecommunication circuits
59
Fiber optic cable
fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. They're designed for long-distance, high-performance data networking, and telecommunications. If you are dealing with connecting two networks over a long distance (over a few hundred meters), you should use a fiber optic cable
60
global system for mobile (GSM)
communication standard for cellular radio communications and data transfer uses a SIM card to identify the subscriber and network provider.
61
post office protocol (POP3) is a
TCP/IP application protocol providing a means for a client to access email messages stored in a mailbox on a remote server over port 110
62
internet message access protocol (IMAP)
TCP/IP application protocol that provides a means for a client to access email messages stored in a mailbox on a remote server using TCP port number 143.
63
SMTP - simple mail transfer protocol
protocol used to send mail between hosts on the Internet using TCP port 25.
64
CAT 5e
CAT 5e cable since it can support up to 1000 Mbps (1 Gbps) of bandwidth and is the cheapest option provided that will meet your boss' bandwidth requirements.
65
SO-DIMM Small Outline Dual in line memory module
Memory in a laptop
66
FTP
File Transfer Protocol How to transfer files usually with authenticating with a username and password Tcp 20 - active data Tcp 21 - admin control
67
SMTP Simple Mail Transfer Protocol
Send email from one server to another server Tcp 25
68
POP3 & IMAP
how we receive emails from an email server POP3 - tcp 110 IMAP- tcp 143 (newer)
69
NetBIOS
UDP 137 - NAME SERVICE TCP 139 - SESSION SERVICE DIRECT OVER NETBIOS TCP 445
70
AAAA
Address records Defines the IP address of a host For IPv6
71
MX Mail Exchanger record
Make sure you can send and receive email messages from your domain Ex. IN(Internet)MX mail.example.com
72
SPF Sender policy framework
Prevents email spoofing Mail servers check to see if incoming mail really did come from authorized host
73
VLAN
Assign different interfaces on a switch to different vlans They're separated logically instead of physically Ex. Red & blue
74
What is a static IP address?
An ip address that doesn't change You can do this by typing it in manually
75
WAN wide area network
Spanning the globe Connects LANs across a distance
76
Cable CAT5
100 meters
77
Cable CAT5e
Enhanced but still at 100 meters
78
Cable CAT6
Unshielded - 55 meters Shielded - 100 meters
79
Cable CAT6a
100 meters
80
Plenum deals with?
A cable type is built to be used above drop ceilings tiles made to not catch on fire
81
T568A starts with...
White and green
82
T568B starts with...
White and orange
83
DVI - I looks like
DVI - D but with a cross
84
Defragging a hard drive does what
It is a simple process when file fragments are put together to speed up file access
85
When receiving error message OS not found, what do you do
GPT - globally unique ID partition table is corrupt or faulty. Reboot into windows recovery mode and fix the gpt
86
What are the 4 main things needed for a gaming PC
1. SSD 2. high end video/specialized GPU 3. HIGH DEFINITION SOUND CARD 4. high end cooling
87
M.2 form factor does what?
M.2 is a set of form factors for mini card interfaces. An M.2 SSD provides a direct interface with the PCI Express bus to provide higher bus speeds than a SATA connection
88
What type of cable os used to terminate a serial connection to a modem?
A DB-9 connector is used to terminate an RS-232 serial cable.
89
What type of cable is used to terminate a fiber optic cable
A ST, SC, LC, or MTRJ connector is used to terminate a fiber optic cable.
90
What type of cable is used to terminate phone lines?
An RJ-11 connector is used to terminate cables used for phone lines.
91
What type of cable is used to terminate and ethernet cable?
An RJ-45 connector is used to terminate a copper twisted-pair Ethernet cable
92
OS X means what operating system
MacOS
93
describes how a DHCP reservation works
DHCP server will assign an IP from its DHCP scope to the client and reserve it based on its MAC address.
94
What connectivity option provides the fastest speeds for mobile devices?
USB-C with up to 10 Gbps
95
How do you ensure ink will really print on specialty paper like card stock?
Turn up the temperature of the fuser element since heat does not always transfer easily as it does with standard paper
96
A failed CMOS battery will cause what?
This will cause the laptop to lose the correct date and time since this is connected to the motherboard and the ntp (network time protocol)
97
If an image is dim on a projector, what should you do to fix it?
Increase the contrast on the projector. You will increase the light reflected from the white and black image, making it easier to see
98
How can you use wifi to determine location?
Wi-Fi positioning systems use the signal strength or angle of arrival of a signal to determine the device’s location within 1-4 meters
99
How can you use Bluetooth to determine location inside?
Bluetooth can be used within a building to provide an accurate location of the device within 3-4 meters
100
How is GPS used to determine location?
A GPS (global positioning system) device is used to determine a receiver's position on the Earth based on information received from 24 GPS satellites, which operate in a constellation in Medium Earth Orbit (MEO). The receiver must have a line-of-sight to four of the GPS satellites continuously to accurately determine its position on the earth
101
How do bulb life counters affect projector performance?
If you forget to reset the life counter after replacing the bulb/lamp, the projector can often turn itself off since it believes the bulb/lamp still needs to be replaced
102
When replacing a hard drive that has crashed, what cable should you use?
SATA Serial ATA (SATA) is the most widely used interface for hard disks on modern desktop and laptop computers
103
What type of cable is used to terminate a coxial cable for your cable modem?
F type
104
BSOD stands for
Blue screen of death Windows just crashed Check error code to see what's wrong
105
What type of RAM offers the highest level of integrity (security)
ECC or error correcting code Has built in error correction security
106
What is a thin client?
A thin client is a small device that can operate with or without an operating system installed on the client device. Instead, it can boot directly from a network-based operating system on a common server and access applications on the company's application server. This type of architecture can drastically reduce the need for operating system licenses and reduce deployment costs
107
If RAID fails, what should you do?
If it's a higher RAID you should schedule downtime to fix it so users aren't affected
108
What does a proxy server do?
A proxy server acts as an intermediary between clients and the internet, providing security, content filtering, and improved performance by caching web content
109
Ssh is what port
SSH secure shell is port tcp 22 Securitee- 22
110
What is an advantage of PaaS?
PaaS provides a pre-configured environment for development, including tools, frameworks, and runtime environments, saving time and effort.
111
What does a loopback plug do
Used to test a port. When you do this you should see a solid connection LED
112
What's a multimeter?
Measures electricity of a circuit. It's a hand held device
113
f you are troubleshooting a S.M.A.R.T error on a customer's PC, which of the following devices would you be troubleshooting?
Self-Monitoring, Analysis, and Reporting Technology) is a monitoring technology that monitors storage devices like HDD (hard disk drive) and SSD (solid-state drive
114
What is elasticity in cloud computing?
Elasticity in cloud computing refers to the automatic provisioning and de-provisioning of resources based on demand, ensuring efficient use of resources and cost savings.
115
What is scalability in cloud computing?
The ability to handle an increase in workload over time
116
IoT - Internet of Things
IoT normally relies on Zigbee or Z-wave to facilitate the networking of the devices, including hub/control systems, smart devices, wearables, and sensors.

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