Comptia A+ 901: Part 1 Flashcards Preview

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Flashcards in Comptia A+ 901: Part 1 Deck (72)
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Which of the following options can be used as a storage device to boot an operating system?

C) USB Drive

C) USB Drive

A USB Drive is the only device or component that can be used as a boot device.


You are a network technician for a small consulting company. A client has asked you to evaluate options for several SOHO networks to allow employees to work from home. The company has a very strict policy that disallows wireless networks. Which of the following is the most cost effective option?

A) PoE
B) Power-line communication
C) Wiring each home with ethernet drops
D) 802.11i

B) Power-line communication

Power-line communication will allow a SOHO network to be built using ethernet power adapters which is much cheaper than running cable. Power-line communication allows the use of the ethernet protocol over electrical power wiring.


A large company has a nation-wide network, consisting of several smaller networks linked through a VPN and the internet. Which term would best apply to this network?



A Wide-Area-Network (WAN) is a series of smaller networks that are linked together to form a single, large network. Metropolitan Area Networks (MAN) are very similar to WANs, but are geographically smaller and typically used by city governments and universities.


Your supervisor has asked you to bring her a DE-15 connector. Which of the following is she referring to?

A) S-Video


VGA uses a 15 pin DE connector


You have recently started as a network technician for a small finance company. The company has been experiencing network outages and very slow transmission speeds. The network has 6 hubs and 1 router, what is most likely causing the poor network performance?

A) Cross talk
B) Hubs can only broadcast packets
C) Hubs conduct deep packet inspections by default
D) None of the above

B) Hubs can only broadcast packets

Hubs are not intelligent enough to route packets to their destination. Instead they broadcast any data they receive out of every port (except the port they receive it on). Hubs cause large amounts of unnecessary packets that will clog a network.


You are a IT Analyst for a large chain of stores. Your department has been asked to evaluate accepting payments through wireless transmission from mobile devices. Which standard technology are they referring to?

A) Bluetooth
C) WiFi


Near Field Communication (NFC) is the standard wireless protocol behind wireless payment options such as Android Pay and Apple Pay.


You are an IT Support Specialist for a medium sized company. An executive is traveling overseas and does not want his company phone to cause any data or service related fees. Which of the following solutions will ensure this does not occur?

A) Toggle the phone's GPS off
B) Activate Airplane mode
C) Disable the WiFi antenna
D) Place the phone in ad-hoc mode

B) Activate Airplane mode

Airplane mode will disable any cellular transmission functionality and will keep the phone from using any data or services while in a foreign country. WiFi will still be enabled while in Airplane mode.


Which type of motherboard expansion slot has various speeds such as x16 and x32?



PCIe, or PCI-Express, comes in x1, x4, x8, x16, x32 speeds. The size of the expansion slot also varies depending on type used.


Your motherboard has 4 memory slots - 2 blue and 2 black. How should you arrange your memory?

A) Slowly memory in blue, faster in black.
B) NVRAM in blue, RAM in black
C) Put equal size/speed of RAM in the slots, so that each slot matches its paired slot color.
D) Primary ram in blue, backup ram in black.

C) Put equal size/speed of RAM in the slots, so that each slot matches its paired slot color.

All the memory does not have to match, but each slot must match its pair. Meaning both black must match, and both blue must match, but the black and blue slots do not need to match eachother.


You are planning the installation of several wireless access points in a large warehouse. The access points are typically located on the ceiling far away from power sources. Which technology could be used to power the device?

A) Power-line communication
B) Ethernet Repeater
C) PoE
D) Loopback plug

C) PoE

Power over Ethernet (PoE) allows a device to use an ethernet cable as a power source and it's data/network connection. Using PoE the wireless access points will not need separate power and data connections.


You are a server support technician for a data warehouse company. Recently a Windows based server has had several unexpected shut downs. Where should you look first for more information?

A) Event Viewer
B) Task Manager
D) Boot Recorder

A) Event Viewer

On Windows based systems the Event Viewer will display a detailed log of events such as application crashes, power losses and other debugging information for the operating system, third party applications and hardware.


Which of the following devices or systems is critical in the event of a power outage?

B) Power strip
C) Line conditioner
D) Surge Distributor


An Uninterruptible Power Supply (UPS) is a backup power supply that can be used in the event of a power outage. Typically a UPS only has 10-15 minutes of power and is intended to allow systems to continue functioning briefly or be powered off safely as opposed to being a long term backup resource.


Your company is planning on issuing all management employees an iPhone 6S and an iPad pro. All of the work stations in the office have USB ports, what type of cable is needed to connect these new devices to the devices to their work station?

A) USB to Lightning cable
B) USB to USB C cable
C) USB to USB mini cable
D) USB to MicroUSB cable

A) USB to Lightning cable

The only ports that the iPhoneS and iPad Pro have for interacting with a computer are Lightning ports, thus USB to Lightning cable is the correct answer.


An old Linux server is having USB driver problems and your co-worker needs to bring a different type of keyboard or an adapter. What type of keyboard/adapter is likely needed?

A) Lightning
B) Firewire
C) PS/2
D) Bluetooth

C) PS/2

PS/2 is an older port type that was predominately used for input devices like keyboards and mice. Lightning is a newer technology used primarily in Apple products. Firewire is not a likely answer, input devices for firewire is rare/nonexistent. Bluetooth is not likely to be supported on a server, especially an old server.


There is a network (RJ45) port in your office, recently it stopped working. There is no connectivity provided when you plugin to it. The cable and your NIC are known-good, you need to make sure the cable on the back-end of the port is connected but the wiring closet is a disaster. Which tool will assist with this?

A) Tone generator/probe
B) Loopback plug
D) Cable tester

A) Tone generator/probe

Tone generator/probe will help you identify which cable runs to your office so you can see if it is connected. A loopback plug is for testing the NIC, which we already confirmed good. PING is an application/command used to test network connectivity, it won't help here. A cable tester would likely be the next tool used once we find our cable and confirm that it is connected.


A user working in a warehouse calls and tells you that his computer keeps freezing or rebooting at random, it makes an annoying high-pitch squeak/squeal when running. What is likely to be the issue?

A) Overheating/fan issues
B) Battery not charging
C) Sticking keys
D) Bad driver software

A) Overheating/fan issues

Warehouses are often very dusty, which could cause a fan to stop working and promote overheating. These symptoms (freezing/rebooting) indicate overheating, the noise could be a failing fan. These symptoms do not indicate a battery issue or sticky keys. They could a bad driver, but coupled with the noise it and location is not likely.


There is a printer shared via Windows File and Printer sharing on your SOHO network. When your husband attempts to print he receives an "Access Denied" error. Where should you look to correct this issue?

A) The Security tab under Printing Preference on your husband's computer
B) The Security tab under Printing Preference on the host computer
C) The Security tab under Printer Properties on your husband's computer
D) The Security tab under Printer Properties on the host computer

D) The Security tab under Printer Properties on the host computer

The Security tab under Printer Properties on the host computer is where you set the permissions for a shared printer, thus it is the correct answer. There is no Security tab under Printing Preferences which is where you set print quality, paper orientation, etc.


Your boss wants you to come up with a solution for allowing people to easily move their laptops between work and home without having to reconnect cables for the mouse, keyboard, network, monitor, etc. What technology will enable this?

A) Cable lock
B) Docking Station
C) Wireless
D) USB Hub

B) Docking Station

A docking station is the only listed that will allow you to quickly connect a monitor, network cable, and input devices to the laptop. A cable lock is a physical security device. Monitors do not typically support a wireless connection, and a USB hub does not usually support monitor output or network connections.


You sit down at an unfamiliar server with a black prompt, you decide to identify the server by checking its IP address. You type ipconfig and it responds "bash: ipconfig: command not found...," what command will likely give you the information you're looking for?

A) Netstat
B) Ifconfig
C) Nslookup
D) Tracert

B) Ifconfig

The computer is likely a Linux/Unix (*nix) machine, ifconfig is the appropriate command to find the IP address in a *nix OS. Netstat will show active connections but not the IP address. Nslookup is for querying DNS. Tracert is not likely to work on a *nix box, nor will it display for IP since it is used for showing path information to a remote system.


The cursor on your laptop keeps drifting in the same direction, you disconnect your mouse and this continues to happen regardless of you using the touchpad. What actions can you take to remedy this?

A) Replace your mouse, it has caused driver issues with the touchpad
B) Disable the touchpad, see if the problem persists
C) Ensure none of the arrow keys are stuck
D) Ensure that Scroll Lock is on

B) Disable the touchpad, see if the problem persists

The touchpad is likely damaged or has driver issues, a temporary fix might be disabling it and using a mouse. There is no indication that mouse drivers are causing this problem. The arrow keys and Scroll Lock do not usually influence cursor movement.


The clock on your computer keeps falling out of sync, you have to set it each time you restart the computer or power it on. The offset is never consistent. What should you do to correct this issue?

A) Check the timezone settings
B) Replace the fan, the system is overheating
C) Replace the CMOS battery
D) Ensure that port 321 is not blocked

C) Replace the CMOS battery

Since the offset is inconsistent and the clock issues seem to revolve around the system not being powered on it could be a CMOS battery issue. If it were an NTP (port 321) or timezone issue you would likely see a consistent offset. None of these symptoms are typical of an overheating system.


You are configuring a static IP address on a Windows system and realize the netmask is written as "/25," what is the proper way to input this into the network configuration for this system?

A) /25

B) is the correct answer. Windows does not allow you to input CIDR for network configurations. is a /26 netmask, is a /24 netmask.


You have been tasked by the Network Team to assign a server a new static IP address. You are receiving an error when attempting to apply the IP with a subnet mask of What is the issue causing the error?

A) The DHCP server isn't assigning an IP address, so it has generated an APIPA address
B) The IP address is invalid
C) 172 is a class bravo IP but the subnet is class alpha
D) There is not enough information provided to determine the problem

B) The IP address is invalid

Each octet of an IP must be between 0-255 but the second octet of this IP is 256. The IP is not an APIPA and DHCP would not affect manually setting a static IP. Classes are used to determine the default subnet mask for an IP but you are not required to use it, therefor the class B address can be used with the class A subnet mask.


You are in charge of purchasing new computers for the office, they need to "boot fast and store large video files for editing, don't blow your budget either." The systems only have room for one type of storage device and one type of optical device. What is the best drive to meet these requirements?

C) Hybrid Drive
D) Tape Drive

C) Hybrid Drive

A hybrid drive will meet these requirements, it is more affordable than an SSD and quicker than a HDD. A tape drive is more of a backup tool, and is slow, not ideal for regular use as described.


You are having issues connecting/consoling to a Linux server hosting a database of customer information from your home machine, you think the problems are being caused by a blocked port on your firewall. Which port on your firewall is likely to cause this sort of an issue if blocked?

A) Port 22
B) Port 23
C) Port 80
D) Port 3389

A) Port 22

Port 22 (SSH) is the best answer, SSH is used for secure communications such as console connections to a remote server. Port 23 is for TELNET and is not a secure connection, it is unlikely (or a horrible practice) that TELNET would be used to connect to a sensitive database. Port 80 is for HTTP traffic, not for console connections. Port 3389 is for RDP, and would not usually be used for a console connection but a remote desktop connection.


You need to make a backup of a small database storing customer information for historical records. The database is about 5.5 GB in size. Of the options, which is the best storage media for this task?



Of the options provided DVD-R DL is the only one with the capacity (8.5GB) to support this. Both CD options have a 0.7GB capacity, and a DVD-R has a 4.7GB capacity.


You are called to look at a co-workers computer. It is not powering on, no fans start, there is no sound, and no lights turn on when the power button is pushed. What should you do first?

A) Check the power cable
B) Replace the power supply
C) Replace the CMOS battery
D) Check the boot sequence in the BIOS/UEFI

A) Check the power cable

Checking the power cable is the most logical answer. You do not know if the power supply is good yet, so replacing it would be premature. These symptoms are not indicative of a CMOS battery issue or a boot sequence issue (also, you can't access the BIOS/UEFI if there is no power).


You're setting up a SOHO and want to setup a dedicated backup server with 2 HDDs. You will be backing up valuable files like family pictures and tax forms, so you value redundancy and reliability over speed. What is the best configuration for this server?

A) Dualcore Processing
B) Raid 0
C) Raid 1
D) Raid 5

C) Raid 1

RAID 1 is the only technology that meets the goals stated (redundancy) for the current setup. Dualcore processing is for processing, not storage/backups. RAID 0 is for speed, not redundancy. RAID 5 offers redundancy but requires 3 or more storage devices, you only have 2 HDDs.


Your supervisor decides he wants to transition the office from a fiber connection to a satellite connection. The office relies on the connection for VoIP, email and cloud storage. You find that the prices for satellite connections are cheaper. Why would you advise against this change?

A) You don't, saving money and no performance change is a great idea
B) The latency from the satellite connection would adversely impact VoIP
C) This would likely require re-wiring the whole network, outweighing any cost savings
D) Encryption is not available over satellite connections this could be a compliance/security issue

B) The latency from the satellite connection would adversely impact VoIP

Satellite connections often have notable delay/latency issues which would be unacceptable for VoIP and video conferences, they are also negatively impacted by weather. The hand-off for satellite is likely RJ-45 or something similar, you may need a new modem but re-wiring the entire network is an unlikely requirement. Satellite connections can be used with encryption.


What type of network cabling has 2 pairs and traditionally only utilizes 1 of the pairs?

A) RJ-11
B) RJ-45
C) Coax
D) 4-pin 12V

A) RJ-11

RJ-11 supports both a 1 (2 wire) and 2 (4 wire) pair configuration, typically used in telephone systems only 1 pair is traditionally utilized. RJ-45 has 4 pairs (8 wires), Coax has 1 wire, and 4-pin 12V is for power supplies.