Computer Hardware Interview Questions and Answers | Basic Computer Knowledge


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


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

   A.) 1
   B.) 2
   C.) 3
   D.) 4

Answer: Option 'B'



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)


Which DOS driver is used to emulate expanded memory?

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

Answer: Option 'B'



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

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

Answer: Option 'B'



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'



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


ESD would cause the most damage to which component?

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

Answer: Option 'D'

Expansion board


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


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


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


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'



What command is used to reset a MODEM when using the

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

Answer: Option 'A'



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

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

Answer: Option 'B'

​Video controller


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'



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


RS-232 is a standard that applies to:

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

Answer: Option 'B'

​serial ports


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


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

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

Answer: Option 'B'

A 286 CPU


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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