CompTIA A+ Certification 220-901

One of the network printers is producing copies where the toner is smeared on paper after printing. What component should be checked?

Options are :

  • Fuser (Correct)
  • Maintenance kit
  • Paper output tray
  • Print spooler

Answer : Fuser

Explanation Correct Answer:Thermal and laser printers use a fuser to heat the toner to a melting point. Once melted, the toner will fuse with the fibers of the paper.Incorrect Answers:A maintenance kit is a kit of replacment parts. It may assist in the repair, but it is not a component.The paper output tray is only used once the printing process is complete. It will not effect the print job.The print spooler is a software based program that schedules print jobs; it does not effect the actual printing.

A technician has a user whose system has a network link light, but the user is unable to access any of the company's internal network resources. Which of the following is the MOST likely cause of the issue?

Options are :

  • Incorrect gateway
  • IP address conflict (Correct)
  • Packet collisions
  • Slow transfer speeds

Answer : IP address conflict

Explanation Correct Answer:The only answer that would allow for no connection with a link light, is the IP address conflict. Incorrect Answers:Slow transfer speeds can cause performance issues, but will still allow access. Packet collision can cause performance issues, but will still allow access. An incorrect gateway will not prevent you from accessing internal resources,but will only prevent internet access.

A company has a network printer that is utilzed by several departments. Although the printer shows online and other departments can access the printer, the accounting group is unable to print to this network printer. Which of the following would the technician use to resolve the problem?

Options are :

  • Replace the network cable on the printer.
  • The printer needs a maintenance kit replaced.
  • The security settings for the print spooler need to be modified to include the department. (Correct)
  • The TCP/IP print spooler service needs to be restarted.

Answer : The security settings for the print spooler need to be modified to include the department.

Explanation Correct Answer:Since other departments are accessing the print spooler without difficulty, the department that is having the problem does not have the proper permissions to use the print spooler.Incorrect Answers:The printer is working for other departments; no maintenance is needed.Other departments are accessing the print spooler without difficulty; the spooler is working properly.Other departments are accessing the printer properly; the cable does not need replaced.

A client's PC will no longer boot following the annual test of a company's back-up generator system. When the client attemps to turn on the system, the display receives no output. Upon arrival, the technician also notices there are no POST beep codes when turned on, however, the system's fans do begin to run after turning on. The client describes the fans as being louder and faster than normal. Which of the following is the MOST likely issue?

Options are :

  • Motherboard was damaged during the power test. (Correct)
  • RAM was damaged by ESD.
  • The power supply no longer functions due to damage.
  • The power test erased the hard drive.

Answer : Motherboard was damaged during the power test.

Explanation Correct Answer:The motherboard is not working, because there are no beep codes. Incorrect Answers:A power test cannot erase a hard drive.RAM damage could prevent the system not to boot, however, the motherboard would still emit a POST beep code for RAM.If the power supply was not functional, the fan would not spin.

A user reports that he cleared a paper jam and now cannot print. The technician reseats the paper and then prints a test page from the printer. A test page sent from the workstation does not print. Which of the following actions should the technician take first?

Options are :

  • Check the printer connection
  • Clear the print queue (Correct)
  • Reboot the computer
  • Stop and start the printer

Answer : Clear the print queue

Explanation Correct Answer:It's possible that the print queue is backed up, so clearing it might help things get moving again.Incorrect Answers:It's possible that the printer's connection has come loose, but if the printer hasn't been moved recently, it's probably a better idea to simply clear the print queue.Rebooting the computer might work, but only because it would clear the print queue. Clearing it manually might be the quicker option.Restarting the printer most likely won't do anything. Do it as a last resort.

When choosing a home theater computer, what are the BEST features to include? (Select TWO).

Options are :

  • Digital Audio (Correct)
  • Dual Monitors
  • HDMI Output (Correct)
  • Liquid Cooling
  • NFC Capability
  • VGA Output

Answer : Digital Audio HDMI Output

Explanation Correct Answer:Home theaters focus on the audio and visual in your television, movies, games and music. HDMI gives the best audio and video output.Incorrect Answers:Home theaters do not push the processor's ability to the point of requiring extensive cooling.VGA output does not offer as high a quality as HDMI output.Dual monitors are not necessary, as a home theaters generally have a large screen for viewing.Near field communication is generally utilized for mobile pay devices.

A new company is upgrading a media workstation. The computer will be predominantly used for graphic intensive presentations, slideshows, and video gaming tournaments on a large presentation screen. Which of the following BEST satisfies the needs of the company?

Options are :

  • Gigabit NIC, network connectivity, dual monitors, TV tuner
  • High system RAM, network connectivity, high-end audio
  • High-end video, high-end audio, multicore processor (Correct)
  • Network connectivity, TV tuner, surround sound audio, dual monitors

Answer : High-end video, high-end audio, multicore processor

Explanation Correct Answer:When using a system for grahic intensive presentations, a high end video component is required. Graphic intensive presentations and gaming requires a RAM on the video card, as well as within the system itself, to avoid slow graphic display.Incorrect Answers:Although RAM, networking and high-end audio are good components, they are not the best. Graphic intensive presentations need high-end video.Although Gigabit networking connectivities are good components, a TV tuner is used for receiving televison signal. Dual monitors will not likely be necessary, as they likely have a presentation screen.Although network, connectivity and surround sound audio are good components, a TV tuner is used for receiving televison signal. Dual monitors will likely not be necessary as they likely have a presentation screen.

A company has a printer that currently has network access. They would like the group of users to be able to access the printer. Which of the following connection types is the BEST to achieve the access?

Options are :

  • eSATA
  • Ethernet (Correct)
  • Serial
  • USB

Answer : Ethernet

Explanation Correct Answer:Ethernet networking can easily provide device sharing and it is currently configured with their network.Incorrect Answers:Serial cabling could work, but the printer already has network access.USB cabling could work, but the printer already has network access.eSata is not a valid connection for a printer.

While trying to type, a user reports that his notebook is randomly moving the cursor or mouse, which causes him to make a lot of typing errors. What action can the technician take to solve the issue for the user?

Options are :

  • Adjust the settings so the mouse moves at a faster rate
  • Adjust the settings so the mouse moves at a slower rate
  • Disable the mouse touch pad. (Correct)
  • Reverse the buttons on the mouse pad

Answer : Disable the mouse touch pad.

Explanation Correct Answer:Touchpads on laptops can get bumped by your thumb or the palm of your hands as you type. Most laptops have a button or a function key that will allow you to disable the mouse touchpad.Incorrect Answers:The rate of the mouse (quick or slow) is not effecting your cursor movement. This is generally caused by your hands touching the touch pad.Reversing the buttons will not assist, as it is commonly your hands touching the touch pad.

A technician obtains a maintenance kit that contains a fuser, transfer roller, and pickup rollers to perform maintenance on a printer. What type of printer will they be maintaining?

Options are :

  • Impact
  • Inkjet
  • Laser (Correct)
  • Thermal

Answer : Laser

Explanation Correct Answer:The transfer roller is used to transfer the image created in toner to the paper. A laser printer is the only printer that will use toner to create the image on paper. Incorrect Answers:Impact printing does not use a transfer roller.Thermal printing does not use a transfer roller.Inkjet printing does not use a transfer roller.

A user wants to extend his computer's storage capacity with external devices. Which of the following storage standards would allow the user to utilize storage externally? (Select TWO).

Options are :

  • EIDE
  • eSATA (Correct)
  • IEEE 1394 (Correct)
  • PATA
  • SATA

Answer : eSATA IEEE 1394

Explanation Correct Answer:Only the eSATA and IEEE 1394 standards allow for external devices.Incorrect Answers:EIDE is an internal drive connnection.SATA is an internal drive connnection.PATA is an internal drive connnection.

A user is clearing out their hard drive space. They have some personal video that they would like to keep, but no longer need it on their system. Which of the following types of media is the LEAST expensive with a maximum capacity of 700MB?

Options are :

  • Blu-Ray
  • CD-R (Correct)
  • DVD-R
  • USB drive

Answer : CD-R

Explanation Correct Answer:CD technology is the least expensive of the technologies listed and can hold the 700MB capacity required.Incorrect Answers:USB drives are a more expensive media.Blu-Ray drives are a more expensive media.DVD-R drives are a more expensive media.

A user wants to change what happens when a laptop's lid is closed. Which of the following Control Panel applets is the most direct way to adjust this?

Options are :

  • Device Manager
  • Display
  • Personalization
  • Power Options (Correct)

Answer : Power Options

Explanation Correct Answer:The Power Options applet controls what happens when a laptop's lid is closed.Incorrect Answers:The Display applet controlled things like screen resolution, color depth, and desktop wallpaper in pre-Vista Windows.The Personalization applet has replaced the Display applet's wallpaper and screen saver functionality.Device Manager enables you to control the hardware devices installed in your comptuer, from updating or rolling back drivers, to disabling troublesome devices.

If a client wanted to store all her media in one place and then stream it to all her devices, which of the following should a tech recommend to her?

Options are :

  • Gaming
  • Home server (Correct)
  • Home theater
  • Virtualization workstation

Answer : Home server

Explanation Correct Answers:A home server would suit the client's needs perfectly, enabling her to share all her media from a single machine.Incorrect Answers:Home theater PCs, gaming PCs, and virtualization workstations aren't specifically designed to share media.

When setting up an LCD monitor, which resolution mode, by definition, provides the best visual quality?

Options are :

  • Digital
  • Native (Correct)
  • SVGA
  • XGA

Answer : Native

Explanation Correct Answer:An LCD monitor's native resolution defines the highest resolution a monitor can support. It is therefore the best picture quality the monitor can achieve.Incorrect Answers:SVGA is the name for the resolution 800 x 600.Digital just means 1s and 0s. It's not a resolution.XGA means 1024 x 768.

What is the most important measurement of a projector's performance if it's primiarly going to be used in a conference room with a lot of natural light?

Options are :

  • Contrast ratio
  • HDMI 1.4 compatibility
  • Lumens (Correct)
  • Resolution

Answer : Lumens

Explanation Correct Answer:A projector with a very bright bulb (measured in lumens) will project a visible image even in a very bright room.Incorrect Answers:The resolution and contrast ratio won't matter if you can't see the image the projector is displaying.HDMI compatibility doesn't really factor in here.

What level of RAID increases drive size and access speed without providing any type of data redundancy?

Options are :

  • RAID 0 (Correct)
  • RAID 1
  • RAID 10
  • RAID 5

Answer : RAID 0

Explanation Correct Answer:RAID 0 is rarely used because, while it usefully increases storage space and access speed, it actually increases the likelihood of losing data due to drive failure.Incorrect Answers:RAID 1, 5, and 10 all provide various forms of data redundancy.

What type of connector would you use on a CAT5 cable?

Options are :

  • DB-9
  • RJ-11
  • RJ-45 (Correct)
  • RS-232

Answer : RJ-45

Explanation Correct Answer:RJ-45 connectors are used with Ethernet cables.Incorrect Answers:DB-9 connectors are used for serial ports.RJ-11 connectors are used on telephone cords.RS-232 is the name of the serial standard.

What must a technician do when replacing a 10/100 NIC with a 1 GB NIC?

Options are :

  • The drivers for the new 1 GB NIC must be installed (Correct)
  • The network cable must also be upgraded
  • The NIC speed cannot exceed 10/100 and the PC must support digitally signed drivers
  • The PC must be rated to support the 1 GB NIC speed

Answer : The drivers for the new 1 GB NIC must be installed

Explanation Correct Answer:You must install drivers for the new NIC in order for the computer to use it.Incorrect Answers:The other answers are all made up.

Which of the following devices would you plug multiple DVI and USB cords into while setting it up?

Options are :

  • KVM (Correct)
  • LCD panel
  • Touch screen
  • Webcam

Answer : KVM

Explanation Correct Answer:When setting up a KVM, you have to connect a cable for a monitor, keyboard, and mouse to every computer you're going to be controlling, plus one of each for the station you'll be controlling them all from.Incorrect Answers:Touch screen monitors pretty much only need one DVI and one USB cable.An LCD panel will only use one DVI cable.A Webcam would only use one USB cord.

Which expansion slot can be found on a desktop computer?

Options are :

  • Express Card 34
  • Express Card 54
  • PCI express (Correct)
  • PCMCIA

Answer : PCI express

Explanation Correct Answer:PCI express slots can be found in desktop computers, though there is also a miniature form factor that can be found in laptops.Incorrect Answers:Express card and PCMCIA slots are found only on laptops, where other expansion slots are rare.

When installing a printer in Windows, which of the following is the purpose of the Additional Drivers button on the Sharing tab in the printer's properties?

Options are :

  • To add additional drivers for different printing modes
  • To add additional drivers for other operating systems (Correct)
  • To add additional drivers for other printers on the computer
  • To add additional drivers to emulate a different printer

Answer : To add additional drivers for other operating systems

Explanation Correct Answer:Not every computer accessing the shared printer will be running the same version of Windows, so the Additional Drivers button enables you to install drivers for other versions of Windows.Incorrect Answers:None of the other answers describe the purpose of the Additional Drivers button.

What type of storage medium would you use to create a RAID 5 array?

Options are :

  • Blu-ray discs
  • Dual layer DVDs
  • Flash drives
  • SATA HDDs (Correct)

Answer : SATA HDDs

Explanation Correct Answer:You can create a RAID using SATA hard drives.Incorrect Answers:No type of removable media can be used to create a RAID.

Which of the following devices most likely will require a driver install?

Options are :

  • Monitors
  • Projectors
  • Scanners (Correct)
  • Speakers

Answer : Scanners

Explanation Correct Answer:You'll probably have to install drivers for a scanner before you can start using it.Incorrect Answers:You don't need to install any drivers to use speakers, monitors, or projectors.

What would you use to enable multiple PCs to share a monitor?

Options are :

  • Bridge
  • KVM (Correct)
  • Router
  • Wireless keyboard

Answer : KVM

Explanation Correct Answer:A KVM (which stands for keyboard, video, and mouse) enables you to share a single monitor and set of inputs among several computers. They're used extensively in computer repair shops.Incorrect Answers:A router connects two networks together.A network bridge combines two distinct networks into one larger network.A wireless keyboard won't help you use share a monitor among PCs.

What connector would you use to connect a video card to a power supply?

Options are :

  • 20-pin
  • 8-pin 12 volt
  • PCIe 6-pin (Correct)
  • SATA

Answer : PCIe 6-pin

Explanation Correct Answer:The PCIe 6-pin connector plugs into higher-end video cards. Some video cards require two of these connectors!Incorrect Answers:The 8-pin 12 volt connector plugs into the motherboard to provide additional power to the CPU.The 20-pin, or P1, connector provides power to older motherboards. It has been largely replaced with a 24-pin connector.SATA connectors are for, you guessed it, SATA drives.

What must you do when installing a PCIe sound card?

Options are :

  • Configure the jumpers
  • Flash the BIOS
  • Install additional memory
  • Install drivers (Correct)

Answer : Install drivers

Explanation Correct Answer:As with any new hardware install, you've got to install drivers for your device before you can use it.Incorrect Answers:You don't need to install any more RAM, configure any jumpers, or flash the BIOS to install a simple sound card. Talk about overkill.

If you want to utilize your motherboard's dual-channel RAM feature, what type of RAM do you need to use?

Options are :

  • DDR (Correct)
  • RAMBUS
  • RDRAM
  • SDRAM

Answer : DDR

Explanation Correct Answer:DDR RAM is the only type of RAM to support dual-channel.Incorrect Answers:None of the other types of RAM support dual-channel. They're also all outdated, so you probably won't actually see them anywhere.

After installing a new multifunctional printer, an administrator realizes the flatbed scanner does not scan any documents. Which of the following is the most likely reason of the issue?

Options are :

  • The multifunction printer's USB cable was plugged into the incorrect port
  • The printer driver was installed incorrectly
  • The scanner lock switch on the device is locked (Correct)
  • The scanner's alignment and calibration was not performed

Answer : The scanner lock switch on the device is locked

Explanation Correct Answer: It's very possible that the scanner lock switch is set to the "locked" position, preventing users from scanning documents.Incorrect Answers:There's no need to start reinstalling print drivers. Check the lock first.It's impossible to plug a USB cable into a non-USB port without a hammer, and every USB port is the right USB port.It's not necessary to calibrate a scanner before scanning documents.

What should you look for when building a home server PC? (Select two.)

Options are :

  • Dual monitors
  • Gigabit Ethernet (Correct)
  • RAID support (Correct)
  • Touch screen interface
  • Virtualization support

Answer : Gigabit Ethernet RAID support

Explanation Correct Answers:The most important features for a home server are storage space (and storage redundancy), and network speed. Good RAID support and gigabit Ethernet cover those bases.Incorrect Answers:Most home users aren't running VMs, so virtualization support isn't hugely important.The thing about servers is that you mostly access them remotely, so touch screens and multi-monitor setups are completely unnecessary.

What type of printer uses an imaging drum?

Options are :

  • Impact
  • Inkjet
  • Laser (Correct)
  • Thermal

Answer : Laser

Explanation Correct Answer:Laser printers use lasers to charge the surface of the imaging drum in the shape of the image to be printed.Incorrect Answers:None of the other printers use an imaging drum.

What is the first step you should take when replacing a network printer?

Options are :

  • Delete all print jobs before replacing the printer
  • Notify all users before unplugging the printer (Correct)
  • Save all print jobs, replace the printer, and print all saved files
  • Unplug the network printer then notify users

Answer : Notify all users before unplugging the printer

Explanation Correct Answer:Before unplugging any shared network resource, be sure to notify other users who might need to access it. It's only polite.Incorrect Answers:Don't unplug the printer before notifying the other users.Also, saving or deleting print jobs isn't really part of the process.

Which of the following characteristics would you look for in a virtualization server? (Select two.)

Options are :

  • Dual monitors
  • Maximum memory (Correct)
  • Maximum-core processor (Correct)
  • Specialized video card
  • Surround sound audio

Answer : Maximum memory Maximum-core processor

Explanation Correct Answers:A virtualization server needs as many CPU cores and as much RAM as possible.Incorrect Answers:A virtualization workstation doesn't need a high-end graphics card, dual monitors, or surround-sound audio.

Which of the following display connections has 15-pins?

Options are :

  • Component RGB
  • DVI
  • HDMI
  • VGA (Correct)

Answer : VGA

Explanation Correct Answer:VGA connectors are also known as DE-15 connectors because they have 15 pins.Incorrect Answers:Component RGB connectors have 3 plugs and are used in home theater connectivity.DVI connectors have 29 pins.HDMI connectors have either 19 or 29 pins, though they're not really visible from the outside of the connector.

What type of hard drive is the most resistant to physical shock?

Options are :

  • IDE
  • NAS
  • SATA
  • SSD (Correct)

Answer : SSD

Explanation Correct Answers:SSDs are highly resistant to sudden movement, making them great for portable devices like tablets and laptops.Incorrect Answers:IDE and SATA are just hard drive interfaces.A NAS, or network attached storage, device is just an external hard drive that hooks up to your network.

You are creating a PC for a client that uses CAD/CAM applications. What are the most important things to consider when creating this computer? (Select two.)

Options are :

  • Gigabit NIC
  • HDMI output
  • High end audio output
  • Maximum RAM (Correct)
  • Powerful processor (Correct)

Answer : Maximum RAM Powerful processor

Explanation Correct Answers:You need power! Get a powerful CPU and max out your RAM as much as possible so you can handle those hardware intensive CAD/CAM applications.Incorrect Answers:A gigabit NIC wouldn't be the most important thing to have for CAD/CAM. That's just your connection to the network. While having gigabit Ethernet is amazing, it isn't essential for CAD/CAM applications.You won't necessarily need HDMI output. That is more designed for HTPC setups. You can get away with DVI, or maybe even VGA.Jamming out to your favorite Justin Bieber songs isn't necessary for a CAD/CAM station. So you don't need high-end audio output.

A company is updating their office routers that handle all incoming and outgoing networking traffic. They would like the PCs to immediately connect to internet and network resources, without any additional configuration. Which protocol should the technician use to meet the requirements?

Options are :

  • DHCP (Correct)
  • NAT
  • Port forwarding
  • QoS

Answer : DHCP

Explanation Correct Answer:Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.Incorrect Answers:NAT is used to translate private LAN addresses into a shared public address. Port forwarding allows calls to a particular port of a public address to be directed to a specified internal IP address and port QoS is used in a router to prioritize and optimize inbound and outbound traffic.

Which of the following internet connection types is a digital connection that runs over standard telephone wiring?

Options are :

  • Cable
  • Dial-up
  • DSL (Correct)
  • Fiber optic

Answer : DSL

Explanation Correct Answer:DSL is the internet connection type that runs over telephone wiring.Incorrect Answers:Dial-up does run on telephone wiring, but is not digital. Although fiber and cable are digital connections, they do not run on telephone wiring. Fiber-optic is a digital connection, but does not run on telephone wiring. Cable is a digital connection, but does not run on telephone wiring.

What is the least secure type of wireless encryption?

Options are :

  • AES
  • TKIP
  • WEP (Correct)
  • WPA

Answer : WEP

Explanation Correct Answer:WEP, or wireless equivalent privacy, can be cracked in a matter of minutes using current techniques. Don't use it unless your wireless devices don't support anything else.Incorrect Answers:WPA, which uses the TKIP protocol, is more secure than WEP, but it has been replaced by WPA2, which uses AES encyption.

Which of the following types of Ethernet should be used if a technician has no choice but to run cable along fluorescent lighting arrays in a suspended ceiling?

Options are :

  • PVC
  • RG-6
  • STP (Correct)
  • UTP

Answer : STP

Explanation Correct Answer:Shielded twisted pair cable should protect the data from interference from the florescent lights.Incorrect Answers:RG-6 cable is the type that you usually use to hook up your cable box.It's possible that Cersei will use PVC STP cable, but the PVC aspect has nothing to do with the info in the question, since PVC is simply the usual coating for Ethernet cable.UTP cable might be subject to interference from the lights. No good.

What device performs network address translation (NAT)?

Options are :

  • Hub
  • Modem
  • Router (Correct)
  • Switch

Answer : Router

Explanation Correct Answer:A router can implement NAT to share a single public IP address among several local PCs.Incorrect Answers:A switch just addresses packets based on MAC addresses. It doesn't do NAT.A hub broadcasts packets across a LAN. No NAT here!A modem is used for dial-up Internet.

What type of transmission medium is used by a DSL modem?

Options are :

  • Cable TV coax
  • Fiber optic cable
  • Household telephone lines (Correct)
  • Wireless adapter

Answer : Household telephone lines

Explanation Correct Answer:DSL modems use telephone lines to transfer data.Incorrect Answers:Cable modems use cable coax.There is no form of DSL that uses fiber optic wires.

What networking device converts analog signals to digital ones?

Options are :

  • Hub
  • Modem (Correct)
  • Router
  • Switch

Answer : Modem

Explanation Correct Answer:A modem, or modulator/demodulator, converts analog phone signals into the digital signals needed by the computer.Incorrect Answers:Switches, hubs, and routers are all entirely digital devices.

Which setting has the highest possibility of resulting in an IP address conflict?

Options are :

  • Custom DNS address
  • QoS enabled
  • Static IP address (Correct)
  • UPnP enabled

Answer : Static IP address

Explanation Correct Answer:Setting static IP addresses on a network can result in duplicate IPs if the network tech isn't paying attention.Incorrect Answers:Setting a custom DNS address won't result in an IP address conflict.QoS doesn't cause IP address conflicts.Universal plug and play has nothing to do with IP addresses, so it shouldn't cause IP address conflicts.

Which of the listed network devices can only broadcast data?

Options are :

  • Firewall
  • Hub (Correct)
  • Router
  • Switch

Answer : Hub

Explanation Correct Answer:Hubs are only capable of sending out broadcast traffic.Incorrect Answers:Firewalls keep unwanted data packets away from a network or system.Routers connect two networks together.Switches are interconnectivity devices that are capable of sending packets to the computers that they're addresses to.

What does DNS do?

Options are :

  • Provides automated addressing to resources on the network
  • Provides mapping of user friendly names to network resources (Correct)
  • Provides remote connectivity to resources on the network
  • Provides separate control and data connections between network resources

Answer : Provides mapping of user friendly names to network resources

Explanation Correct Answer:DNS provides easy-to-remember names for computers on a network so that users don't have to remember IP addresses.Incorrect Answers:The other answers don't describe DNS.

What decides which part of an IP address is the host address and which part is the network address?

Options are :

  • Default gateway
  • DHCP lease
  • DNS address
  • Subnet mask (Correct)

Answer : Subnet mask

Explanation Correct Answer:A subnet mask splits an IP address into a network address and a host address.Incorrect Answers:DNS is responsible for for resolving IP addresses to domain names.A default gateway is a network's default router.A DHCP lease is the amount of time that a DHCP server grants a computer its IP address.

In Windows, what gives a PC an IP address in the absence of DHCP?

Options are :

  • APIPA (Correct)
  • ARP
  • DNS
  • IPv6

Answer : APIPA

Explanation Correct Answer:Automatic Private IP Addressing (or APIPA) hands out IP addresses when the PC isn't getting one from anywhere else. You won't get on the Internet with an APIPA address, though.Incorrect Answers:The Address Resolution Protocol (ARP) resolves IP addresses to DNS names.IPv6 is the latest revision of the Internet Protocol; a 128-bit addressing system that will save us all from a future without Internet.DNS is in charge of

A customer wants to use VoIP phones without having to plug them into an electrical outlet. Which of the following switch features would a technician recommend?

Options are :

  • Gigabit
  • PoE (Correct)
  • QoS
  • Wake-on-LAN

Answer : PoE

Explanation Correct Answer:Power over Ethernet (or PoE) provides electrical power through Ethernet ports. Super handy when there's not a plug nearby.Incorrect Answers:QoS is a collection of technologies dedicated to providing a stable networking environment.Gigabit is a measurement of network speed.Wake-on-LAN is the ability to wake a computer up from a sleep state by sending a special network packet.

A user has installed a new wireless router and is unable to connect their game console to the manufacturer's network service. Which of the following should the technician look for first?

Options are :

  • Contact the manufacturer to see if service is available
  • Ensure the correct ports are open (Correct)
  • Ensure the game system has a static IP address
  • Ensure the game system has updated firmware

Answer : Ensure the correct ports are open

Explanation Correct Answer:To connect to the network services for game consoles, you might have to open some ports on your firewall.Incorrect Answers:Setting a static IP address for your router won't help unless the router has DHCP disabled. Basically every new wireless router out there has DHCP enabled by default, so this probably isn't the problem.If the correct ports are open and you still can't connect, then you might want to contact the manufacturer, but don't do it first.It's tough to update a system's firmware without first connecting to the manufacturer's network service so you can download the new firmware. This is something you'd do after connecting.

Which of the following WAP features prevents unauthorized computers from joining a wireless network?

Options are :

  • Disable SSID
  • MAC filtering (Correct)
  • Port forwarding
  • Wire encryption

Answer : MAC filtering

Explanation Correct Answer:MAC filtering enables you to either block computers based on their MAC addresses, or else only allow certain MAC addresses to connect.Incorrect Answer:Wire encryption is not a thing.Disabling the SSID is also good, but it's nowhere near as effective as MAC filtering.Port forwarding is used to enable applications to send and receive data over the Internet.

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