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Quiz Session - Attempts With Random Questions

CompTIA A+ Exam Questions

Page 5 of 50

81.

When you wear an antistatic wrist strap, what should the alligator clip attach to?

  • The computer case

  • Your chair

  • A battery

  • Your other wrist

Correct answer: The computer case

Attaching an ESD wrist strap to the metal part of a computer case prevents electrostatic discharge as you remove and replace computer components. If electrostatic discharge occurs, it can permanently damage components.

Attaching an ESD wrist strap to your chair, a battery, or your other wrist does not discharge because it is not grounded.

82.

What can be used to boot a PC from a server over the network instead of a local device?

  • PXE

  • USB

  • DVD-ROM

  • Flash drive

Correct answer: PXE

Pre-boot execution environment (PXE) is a BIOS setting that lets you boot a PC from a server on the network. This enables the capability of a netboot and is typically done with a thin client. Because thin clients attempt to have the least amount of hardware possible, they typically do not have hard drives and will use a network-located image to boot to. This enables hardware to be cheap and all data to be stored centrally. 

The other answer choices are local devices.

83.

A user is working on a legacy system that runs essential software for their business. Whenever the application that they need to run freezes, it locks up the entire system. The user wants to recommend that they rewrite the application to run on an operating system that won't freeze when the application crashes. 

What operating system feature will they need in the new system?

  • Preemptive multitasking

  • Multithreading

  • Cooperative multitasking

  • ARM

Correct answer: Preemptive multitasking

With preemptive multitasking, the operating system allocates each application a certain amount of processing time and then takes control away from the application forcibly. That way, an application that crashes will not stop the whole system.

Multithreading involves a single application being able to send multiple requests to the processor at once. Cooperative multitasking lets each application be responsible for when it relinquishes control of the processor. An Advanced RICS Machine (ARM) is a type of processor with a reduced instruction set that is used on mobile devices.

84.

You are working on a Linux server that your organization owns and manages. You are currently looking for a file that was recently transferred. You are located in the directory /home/AcmeInc/Storage/Shared_Docs. You would like to get to the directory /home/AcmeInc/Storage. Which of the following commands would take you there?

  • cd ..

  • cd .

  • cd ...

  • cd /

Correct answer: cd ..

Use the command "cd" without an argument to change the current directory back to your home directory. No matter where the terminal is currently located, "cd" will return it to the home directory. Dots after the "cd" command reflect the directory of the file, one dot is the current directory, and two dots indicate the parent directory. Subsequently, typing "cd .." in the terminal takes you up into the parent directory.

The command "cd ." will stay in the same directory. The command "cd ..." can be configured to go up two levels if an alias is set. The command "cd /" goes to the root directory.

85.

A company is looking for a solution to their storage problems. They would like to find a cloud service that provides a software solution that the client does not have to worry about creating or maintaining. Which type of cloud solution would best suit their needs?

  • SaaS

  • PaaS

  • IaaS

  • DaaS

Correct answer: SaaS

A Software as a Service (SaaS) solution provides a complete cloud solution that the client does not have to build or maintain. Examples of this are Dropbox and Google Docs.

Platform as a service (PaaS) is a cloud service that allows for software development. Infrastructure as a service (IaaS) is a cloud service that allows a client to rent processing power, storage, or network services. Desktop as a service (DaaS) provides virtual desktops for clients. 

86.

Of the following, which is the MOST common 1 Gbps connection that would be found in a residential home?

  • 1000Base-T

  • 1000Base-TX

  • 1000Base-F

  • 1000Base-K

Correct answer: 1000Base-T

The first part of the network name is the speed.

  • 10Base: runs at 10 Mbps
  • 100Base: runs at 100 Mbps
  • 1000Base: runs at 1000 Mbps (or 1 Gbps) and is often called Gigabit networking
  • 10GBase: runs at 10 Gbps, which is ten times faster than 1000Base-T

The second part is always BASE, as this refers to "baseband" in terms of the line being unfiltered and not requiring a digital modulation scheme.

The third part is the cabling used to carry the signals, and the first letter tells us the type of medium.

  • "T" stands for twisted-pair cable (e.g. the common Cat5 in use today)
  • "K" stands for a copper backplane
  • "C" stands for balanced copper cable
  • "F" stands for optical cable
  • "B" stands for two wavelengths over a single optical cable
  • "S" stands for short-range multi-mode optical cable (less than 100 m)
  • "L" stands for long-range single- or multi-mode optical cable (100 m to 10 km)
  • "E" stands for extended-range optical cable (10 km to 40 km)
  • "Z" stands for long-range single-mode cable at a higher wavelength

87.

Which tool can be used to migrate user data with Windows 10/11 during a side-by-side upgrade?

  • USMT

  • WDS

  • WinPE

  • PXE

Correct answer: USMT

The User State Migration Tool (USMT) is used to migrate user data when upgrading side-by-side. With a side-by-side upgrade, the original system is not removed. 

Windows Deployment Services (WDS) is used to create an image of an operating system. The Windows Preinstallation Environment (WinPE) can deploy operating system images to other systems. PXE is used for booting from the network.

88.

What does POST stand for?

  • Power-on self-test

  • Personal operating systems tech

  • Post-operations system test

  • Pre-on self-test

Correct answer: Power-on self-test

The power-on self-test (POST) process occurs when you power on your computer. The CMOS does a check of required system hardware to ensure that it's functioning. If errors are found, POST returns a pattern of beeps.

The other answer choices are not accepted terminologies.

89.

A company is moving its servers from one side of the building to another. They ask users for help with carrying the equipment. 

What is a precaution that users should take when moving equipment?

  • Lift with your legs, not your back

  • Bend your back when lifting

  • Hold objects away from your body

  • Pulling equipment is better than pushing

Correct answer: Lift with your legs, not your back

When lifting something heavy, use your legs for power rather than using your back. That means you should bend your knees, not your waist.

Bending your back when lifting can result in injury. Holding objects away from the body can strain your arms. Pulling equipment is less ideal than pushing because pushing uses your body weight to your advantage.

90.

To retrieve a screw from a location where it is difficult to retrieve, a technician should NOT use which of the following?

  • Magnetic screwdriver

  • Tweezers

  • Duct tape

  • Sticky device

Correct answer: Magnetic screwdriver

To retrieve a screw from a location where it is difficult to retrieve, a technician should NOT use a magnetic screwdriver. Avoid using magnets for computer hardware repair. Magnetic material damages components, including hard drive storage.

91.

What type of display uses an organic compound to provide light for the screen?

  • OLED

  • Plasma

  • LED

  • LCD

Correct answer: OLED

Organic light emitting diode (OLED) displays are used in smartphones and tablets. The organic light-emitting compounds are used for both the display and backlight, which require less energy than standard displays. Furthermore, OLED displays can be paper-thin and flexible, while providing a high-definition picture. 

Plasma uses a charged gas. An LED is a semiconductor light source that needs a current. An LCD does not produce light.

92.

Which of the following BEST describes a Wide Area Network (WAN)?

 

  • A network that spans large geographical areas, connecting multiple smaller networks

  • A network that connects computers within a single building or campus

  • A network that uses wireless technology to connect devices over short distances

  • A network designed specifically for hosting web applications

Correct answer: A network that spans large geographical areas, connecting multiple smaller networks

WAN stands for Wide Area Network, which is a telecommunications network that extends over a large geographic area for the purpose of computer networking. Wide Area Networks are used to connect smaller networks together, such as local area networks (LANs) or metro area networks (MANs), enabling computers and users in one location to communicate with computers and users in other locations.

A network that connects computers within a single building or campus would be considered a LAN (local area network). A network that uses wireless technology to connect devices over short distances would be an example of a Wireless Local Area Network (WLAN) or possibly a Personal Area Network (PAN). WANs are not designed specifically for hosting web applications.

93.

A company has several Ethernet cables running through a wall to a patch panel. They need to determine which cable is going to a particular switch in another room. However, the cables are not labeled well. What device can they use to locate the correct cable?

  • Toner probe

  • Cable tester

  • Crimper

  • Punch-down tool

Correct answer: Toner probe

A toner probe can trace a wire from one point to another. It has two parts: a tone generator and a probe. Attach one part to each end to find the correct cable.

A cable tester is used to test if a cable is working. A crimper is used to put connectors on the end of a cable. A punch-down tool is used to attach cables to a patch panel.

94.

Which of the following can cause serious injury or death if worn or held during the maintenance of monitors?

  • Antistatic wrist strap

  • Mask

  • Wool clothing

  • Plastic gloves

Correct answer: Antistatic wrist strap

Wearing an antistatic wrist strap (ESD strap) while discharging the energy in a monitor can cause serious injury or death. Due to the way electricity tries to ground itself, it will choose to go through the antistatic strap into your body if a strap is worn during the discharge. It is appropriate to use a high voltage probe to dissipate the energy.

A mask, wool clothing, or plastic gloves will not attempt to carry the charge through you, but the high-voltage charge should still be discharged by an electrical technician.

95.

What is the MAXIMUM amount of RAM supported by Windows 10/11 Pro?

  • 2 TB

  • 128 GB

  • 6 TB

  • 4 GB

Correct answer: 2 TB

Windows 10/11 Pro has support for a maximum of 2 TB. This edition can also join Windows server domains and supports Remote Desktop Server, Hyper-V, Group Policy, BitLocker, and Windows To Go.

128 GB is supported by Windows Home. 6 TB is supported by Windows Pro for Workstation and Windows Enterprise. 4 GB is the recommended minimum amount of RAM for Windows 10/11.

96.

In a standard installation without custom ports, on what port is RDP commonly configured?

  • 3389

  • 110

  • 143

  • 995

Correct answer: 3389

RDP uses the TCP protocol at port 3389. For security reasons, some administrators change this default port to a custom, less commonly known port.

97.

What part, found in an LCD monitor but not in most LED monitors, sends power to the backlight?

  • Inverter

  • Capacitor

  • Resistor

  • AC/DC converter

Correct answer: Inverter

While backlights provide illumination to the screen, the fluorescent bulb operates off of AC power, so the inverter must change the DC current that the laptop runs off of into AC. LED monitors can skip this whole process because LEDs operate on the DC current. This enables LED monitors to be much thinner and to rival plasma in clarity and luminance. 

A capacitor blocks direct currents while allowing alternating currents. A resistor controls the flow of a current. An AC/DC converter converts AC into DC. 

98.

USB cable lengths have set limitations. A USB 2.0 cable can be a maximum of what length?

  • 5 meters

  • 1 meter

  • 2 meters

  • 3 meters

Correct answer: 5 meters

A USB 2.0 cable can only extend a maximum of 5 meters. After you reach this length, signal degradation occurs and your device might not function properly. 

USB 1.x can have a maximum length of 5 meters and USB 3.x can have a maximum length of 3 meters.

99.

You are working with a customer whose computer was recently infected with a virus. You are investigating the Windows Registry for any corruption or errors. Of the following, which two are NOT part of the five basic hives in the Windows Registry?

A. HKEY_CLASSES_ROOT

B. HKEY_CURRENT_USER

C. HKEY_LOCAL_MACHINE

D. HKEY_USERS

E. HKEY_CURRENT_CONFIG

F. HKEY_RESOURCES

G. HKEY_MACHINE

  • F, G

  • A, B

  • C, D

  • D, G

Correct answer: F, G

There are five basic hives in the Windows Registry:

  • HKEY_CLASSES_ROOT
  • HKEY_CURRENT_USER
  • HKEY_LOCAL_MACHINE
  • HKEY_USERS
  • HKEY_CURRENT_CONFIG

HKEY_RESOURCES and HKEY_MACHINE do not exist.

100.

Which of these components is NOT a standard part of a printer fuser and its process?

  • Static-eliminator strip

  • Fusing roller

  • Pressure roller

  • Halogen lamp

Correct answer: Static-eliminator strip

All of these components are part of the fuser and its process except for the static-eliminator strip, which is a part of the transfer corona assembly. 

The fuser assembly uses the halogen lamp to heat the aluminum nonstick fusing roller, which then is pressed up against the paper with the pressure roller. This melts the toner to the paper and makes it permanent.

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