227 Categorized CompTIA A Plus Q and A

PC Parts

1. You are working on a computer. Which of the following are considered essential? (Choose all correct answers.)
   1. Motherboard
   2. CPU
   3. Memory
   4. Video card
   5. A scanner
2. Which of the following devices might be found on the front or back of a computer? (Choose all correct answers.)
   1. Activity lights
   2. Power switch
   3. USB ports
   4. None of these options are correct
3. Which of the following can cause a desktop computer to fail? (Choose all that apply.)
   1. Overheating
   2. Loose add-on cards
   3. Drive failures
   4. Adding more memory
4. Which of the following are the most commonly used Windows operating systems? (Choose the three best answers.)
   1. Windows XP
   2. Windows 2000
   3. Windows Vista
   4. Windows 98
5. Which of the following can be used in your day-to-day work on a standard Windows computer? (Choose the two best answers.)
   1. CHKDSK
   2. toopath
   3. Disk Defragmenter
   4. ifconfig
6. Which of the following is the first thing you should do when replacing a PCI card?
   1. Shut down the system and unplug the power
   2. Open the case
   3. Open the package and sit it beside the computer
   4. Purchase the device
7. Which of the following steps is important to perform when opening the case to access the internal parts of a computer?
   1. Check your system manual
   2. Get out the screwdriver
   3. Check for ESD
   4. None of these options are correct
8. Which of the following can help in preventing ESD? (Choose two.)
   1. Touch the unpainted metal of the chassis
   2. Wear sneakers
   3. Remove the power supply
   4. Wear an antistatic wrist strap
9. How do you identify the cable that connects to the floppy drive?
   1. It is flat.
   2. It is the longest cable.
   3. There is a twist at one end.
   4. None of these options are correct.
10. How do you attach the VGA cable to the video card to prevent it from losing connection?
    1. By snapping it into the video port with both thumbs
    2. By using the locking arm mechanism
    3. By using a torx screwdriver
    4. By turning the thumbscrews
11. Which of the following types of hardware resources do both onboard and addon card devices use? (Choose all that apply.)
    1. IRQ
    2. DMA
    3. Memory
    4. I/O port
12. What is the process of bypassing the CPU called?
    1. Direct Memory Access
    2. Memory Leak
    3. Task Manager
    4. Device Manager

Answers

1. A, B, C, D. The essential computer components listed here are a motherboard (no motherboard means no computer), a CPU or processor (the brain of the computer), memory, and video output (by means of a video card or a video port integrated into the motherboard).
2. A, B, C. You might find all of the listed devices on either the front or back of a computer. Some, such as a USB port, are on both front and back.
3. A, B, C, D. An overheated processor can shut down the computer or cause an unrecoverable error. A loose video card causes a blank display. Hard drive failure results in a non-bootable operating system. And if the additional memory is incompatible with the original memory or the motherboard, it could stop the computer from booting.
4. A, B, C, D. Even though some people still use Windows 98 on their computers, it is not considered a major player among the operating systems of today.
5. A, C. Use CHKDSK and Disk Defragmenter to help prevent your computer from possible hard drive failure. Keeping your hard drive defragmented is a very important part of maintaining a computer.
6. A. When installing a new PCI card, the first thing you should do is shut down the computer and unplug the system. You should always make sure there is no power going into the system to prevent electrostatic discharge (ESD).
7. A. You should look at the system manual before opening the case. Make sure that you are not voiding the service warranty or violating any other service terms by opening the computer case yourself.
8. A, D.Wearing an antistatic wrist strap is highly recommended when working on the inside of the computer. If you do not have one you can touch the unpainted part of the computer before touching the components.
9. C. The floppy drive uses a 34-pin cable that has a twist at one end. This end of the cable connects to the floppy drive (A:) drive. The middle connector is used for B: drive (if it’s present; it’s not supported on some machines).
10. D. Turn the thumbscrews so they are completely retracted. If they are not completely retracted, the VGA cable might not make a proper connection with the video card.
11. A, B, C, D. Every device needs its own set of hardware resources or needs to have the ability to share IRQs.
12. A. The process of bypassing the CPU is called Direct Memory Access (DMA). DMA transfers can be done in two ways. For example, some DMA transfers (such as those done by tape backup drives or by PCI cards using busmastering) do not require a particular DMA channel. Other devices, such as popular ISA sound cards and the ECP mode of the parallel port, require that we select an unused DMA channel.

tamil chat | tamil chat chennai