Computer Hardware Interview Questions and Answers | Basic Computer Knowledge

1.

You have a PC with no video* Which of the following is LEAST likely to be causing the problem?

   A.) loose video card
   B.) defective RAM (bank zero)
   C.) crashed hard drive
   D.) defective microprocessor

Answer: Option 'C'

​crashed hard drive

2.

The floppy drive uses which DMA (direct memory access) channel?

   A.) 1
   B.) 2
   C.) 3
   D.) 4

Answer: Option 'B'

2

3.

What tool is used to test serial and parallel ports?

   A.) sniffer
   B.) cable scanner
   C.) high volt probe
   D.) loop backs (wrap plugs)

Answer: Option 'D'

loop backs (wrap plugs)

4.

Which DOS driver is used to emulate expanded memory?

   A.) Himem.sys
   B.) EMM386.exe
   C.) Mem386.sys
   D.) Ramdrive.sys

Answer: Option 'B'

​EMM386.exe

5.

A hard disk is divided into tracks which are further subdivided into:

   A.) clusters
   B.) sectors
   C.) vectors
   D.) heads

Answer: Option 'B'

​sectors

6.

You are testing the resistance in Ohms of a fuse on a 15K amp system. If the fuse is good, the meter should read?

   A.) 0.0
   B.) 0.2
   C.) 0.4
   D.) 0.6

Answer: Option 'A'

0.0

7.

What are the most likely conditions for ESD?

   A.) Hot and dry
   B.) Hot and wet
   C.) Cold and dry
   D.) Cold and wet

Answer: Option 'B'

Hot and wet

8.

ESD would cause the most damage to which component?

   A.) Monitor
   B.) Keyboard
   C.) Power supply
   D.) Expansion board

Answer: Option 'D'

Expansion board

9.

What's the best way to protect your hard drive data?

   A.) regular backups
   B.) periodically defrag it
   C.) run a regular diagnostic
   D.) run scandisk at least once a week

Answer: Option 'A'

regular backups

10.

Your IDE hard drive is not spinning up when you turn on the PC. What is the most likely problem.

   A.) virus
   B.) bad data cable
   C.) loose molex connector
   D.) incorrect jumper setting on drive

Answer: Option 'C'

loose molex connector

11.

A 25-pin female connector on the back of your computer will typically be:

   A.) Docking
   B.) COM2 port
   C.) Serial port 1
   D.) A parallel port

Answer: Option 'D'

A parallel port

12.

A PC with a 486DX2 processor runs internally at SOMhz. What speed would its external logic be running?

   A.) 5Mhz
   B.) 15Mhz
   C.) 25Mhz
   D.) 35Mhz

Answer: Option 'C'

​25Mhz

13.

What command is used to reset a MODEM when using the

   A.) ATZ
   B.) ATR
   C.) DTR
   D.) DCE

Answer: Option 'A'

ATZ

14.

Which is LEAST likely to interfere with upgrading to a newer DOS version?

   A.) ROM BIOS
   B.) Video controller
   C.) Compressed drives
   D.) Existing backup files

Answer: Option 'B'

​Video controller

15.

To prevent toner from sticking to a laser printer's heat rollers, apply which of the following:

   A.) Oil
   B.) Alcohol
   C.) Ammonia
   D.) Beer or Jack Daniels

Answer: Option 'A'

Oil

16.

After you service a laser printer, you notice dirty print. Which of the following would correct the problem.

   A.) Reset the printer
   B.) Clean the laser diode
   C.) Run several blank pages
   D.) Clean the developer tank

Answer: Option 'B'

Clean the laser diode

17.

RS-232 is a standard that applies to:

   A.) networks
   B.) serial ports
   C.) game ports
   D.) parallel ports

Answer: Option 'B'

​serial ports

18.

A modem could be attached to which port?

   A.) Video port
   B.) Parallel port
   C.) ASYNC port
   D.) Keyboard connector

Answer: Option 'B'

Parallel port

19.

Which would you have to upgrade to install an EIDE drive?

   A.) RAM BIOS
   B.) A 286 CPU
   C.) Controller board
   D.) ISA motherboard

Answer: Option 'B'

A 286 CPU

20.

In inkjet printers, what is the most common problem with the paper tray?

   A.) inconsistent printing
   B.) paper jamming on the ink cartridge
   C.) misalignment of the sheet feeder
   D.) malfunctioning pick-up rollers

Answer: Option 'D'

malfunctioning pick-up rollers


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