Explore topic-wise MCQs in Engineering.

This section includes 4320 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

3151.

A customer calls and says her computer won't boot, she can hear noises and can see lights on the box, but nothing comes up on the screen, what should you take to the site to fix the problem?

A. hard drive
B. video card
C. power cable
D. power supply
E. None of the above
Answer» C. power cable
3152.

Resistance is measured in units of:

A. ohms
B. farads
C. helids
D. amperes
E. volts
Answer» B. farads
3153.

How is ink transferred to paper in common ink jet printers?

A. Boiling ink
B. Crystal
C. Motorized pump
D. Screens deflect ink on the paper into the proper positions
E. Ink is sprayed on to the paper and managed by a nozzle
Answer» C. Motorized pump
3154.

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

A. RAM BIOS
B. A 286 CPU
C. Controller board
D. ISA motherboard
E. None of the above
Answer» D. ISA motherboard
3155.

What is the size of the reserved memory area?

A. 64 kb
B. 384 kb
C. 640 kb
D. 1024 kb
E. None of the above
Answer» C. 640 kb
3156.

What are the most likely conditions for ESD?

A. Hot and dry
B. Hot and wet
C. Cold and dry
D. Cold and wet
E. None of the above
Answer» C. Cold and dry
3157.

On a dot-matrix printer, regular lube maintenance should be followed, but this component should never be lubed:

A. Platten bearings
B. Carriage rails
C. Printhead
D. Paper advance bearings
E. None of the above
Answer» D. Paper advance bearings
3158.

What action will correct patchy, faint, uneven or intermittent print on a dot matrix printer?

A. Replacing the ribbon
B. Replacing the timing belt
C. Adjusting the paper feed tension
D. Adjusting the tractor feed tension
E. None of the above
Answer» B. Replacing the timing belt
3159.

If the voltage on pin 1 of the power supply is not in the range of _____ volts, the PC will not boot.

A. 10 - 20
B. 1 - 5
C. 50 - 110
D. 15 - 25
E. 2.5 - 5
Answer» F.
3160.

The buffers statement is found in what file?

A. Config.sys
B. Autoexec.ncf
C. Autoexec.bat
D. Neb.cfg
E. None of the above
Answer» B. Autoexec.ncf
3161.

You are about to install a second IDE hard drive in a PC that has only one IDE adapter. Your first hard drive will still be the boot drive. How should the second drive be configured?

A. as a master
B. as a secondary
C. as a slave
D. as a primary
E. as auto-select
Answer» D. as a primary
3162.

Which controller would support an external CD-ROM drive?

A. ESDI
B. ARLL
C. MFM
D. SCSI
E. None of the above
Answer» E. None of the above
3163.

The monitor power LED is 'on' but the monitor screen is completely dark. The least likely cause of the problem is:

A. Defect in the computers video circuitry
B. Disconnected video cable
C. Defective monitor
D. System RAM problem
E. None of the above
Answer» E. None of the above
3164.

What is your first action when windows reports that your hard drive is developing bad sectors?

A. replace the hard drive
B. run secclean from dos
C. run defrag on the hard drive
D. run scandisk with the "thorough" option
E. None of the above
Answer» E. None of the above
3165.

How many IRQs does a chain of USB devices require?

A. 1
B. 2
C. 3
D. 4
E. None of the above
Answer» B. 2
3166.

A parity error usually indicates a problem with:

A. memory
B. hard drive
C. hard drive controller
D. I/O controller
E. power supply
Answer» B. hard drive
3167.

What IRQ is used for COM 2?

A. 4
B. 3
C. 2
D. 1
E. None of the above
Answer» C. 2
3168.

Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?

A. reverse vacuum
B. any small vacuum device
C. blow real hard on the system board
D. use a lint-free cloth and wipe gently
E. non-static compressed air
Answer» F.
3169.

Which of the following items would require you t.o comply with EPA disposal guidelines?

A. Keyboard
B. System board
C. Power supply
D. Battery
E. None of the above
Answer» E. None of the above
3170.

What should you replace if the brightness or contrast adjustments were malfunctioning on a laptop?

A. fuse
B. led display
C. adjustment switch
D. led display cable
E. None of the above
Answer» C. adjustment switch
3171.

What command is used to reset a MODEM when using the

A. ATR
B. ATZ
C. DTR
D. DCE
E. None of the above
Answer» C. DTR
3172.

Modems use _____ transmission.

A. Synchronous
B. Asynchronous
C. Timed interval
D. PPP
E. None of the above
Answer» C. Timed interval
3173.

What should he used to extinguish a computer fire?

A. fire hose
B. class a extinguisher
C. class c extinguisher
D. silver foam water
E. None of the above
Answer» D. silver foam water
3174.

What is the file extension used by WIN95 to back up registry file when windows starts?

A. .dat
B. .dao
C. .bak
D. .tmp
E. None of the above
Answer» C. .bak
3175.

A 2xx POST error code indicates a problem with:

A. RAM or ROM
B. hard drive
C. system board
D. second adapter card
E. CMOS battery
Answer» B. hard drive
3176.

In ROM BIOS, the acronym BIOS stands for:

A. Basic Intuitive Output Set
B. Basic Input Organizational System
C. Basic Input Output System
D. Basic Industry Operating System
E. None of the above
Answer» D. Basic Industry Operating System
3177.

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

A. Clean the developer tank
B. Reset the printer
C. Run several blank pages
D. Clean the laser diode
E. None of the above
Answer» D. Clean the laser diode
3178.

On a leased line installation a known good external modem shows no carrier detect light. Where is the problem most likely to be?

A. In the modem
B. In the phone line
C. In the computer
D. In the DTC equipment
E. None of the above
Answer» C. In the computer
3179.

What is the most likely cause of an "FDD controller Failure" error message?

A. you did not set the jumper on the floppy drive to drive A
B. you forgot to flash CMOS
C. you installed the floppy disk drive cable backward
D. your computer's floppy drive is defective
E. None of the above
Answer» D. your computer's floppy drive is defective
3180.

WRAM is used on a

A. modem
B. video card
C. motherboard
D. ata connector
E. None of the above
Answer» C. motherboard
3181.

After displaying the directory of a floppy disk, a different floppy is inserted into the drive. The contents of the original floppy continue to display regardless of the director requests on the other floppies placed in the drive. You remove the drive in question and install it into your test system, and it does not exhibit the problem. You should next replace the:

A. System's floppy drive device driver
B. Original IDE controller
C. Floppy drive ribbon cable
D. System's power supply
E. None of the above
Answer» D. System's power supply
3182.

How may standard levels of interrupts are provided on the 8-bit ISA bus (XT-class computer)?

A. 4
B. 8
C. 12
D. 16
E. None of the above
Answer» C. 12
3183.

"Parity" errors usually indicate bad memory

A. True
B. False
Answer» B. False
3184.

You're on your PC at midnight and an electric storm pops up. What's the best way to protect your PC.

A. you don't worry; you have a lightning rod on your house
B. you don't worry; you've got a surge protector on your PC
C. you don't worry; you've got a surge protector on your PC and phone line to your modem
D. unplug the PC and remove phone line from the modem
E. stop standing on it
Answer» E. stop standing on it
3185.

Which type of system hoard is the MOST likely candidate for processor upgrading if you want maximum performance and future compatibility?

A. ML
B. PCI
C. ISA
D. EISA
E. None of the above
Answer» C. ISA
3186.

You are testing the resistance in Ohms of a fuse on a 2 amp systems. If the fuse is good, the meter should read?

A. 2.0
B. 5.0
C. 0.0
D. 0.2
E. None of the above
Answer» D. 0.2
3187.

To prevent the computer from overheating you should?

A. Remove the slot cover from the back
B. Keep the computer cover closed
C. Remove the CPU fan
D. All of the above
E. None of the above
Answer» C. Remove the CPU fan
3188.

How many devices does USB support?

A. 127
B. 125
C. 100
D. 225
E. None of the above
Answer» B. 125
3189.

What is the recommended way to fix the registry description for the printer driver

A. Delete the spool file
B. Run regedit.exe and remove any reference to the printers
C. Run sysedit.exe and remove any reference to the printers
D. Remove the printer driver and re install it
E. None of the above
Answer» E. None of the above
3190.

ISDN stands for:

A. internal select data nulls
B. integrated services digital network
C. interval set down next
D. interior sector direct none
E. inferior sector data net
Answer» C. interval set down next
3191.

ISDN uses _____ technology.

A. only digital
B. digital and analog
C. only analog
D. neither digital nor analog
E. mostly digital
Answer» B. digital and analog
3192.

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
E. None of the above
Answer» C. Compressed drives
3193.

An important first step in troubleshooting which component in a laser printer is causing a jam is to:

A. note where in the paper path the paper stops
B. check all voltages
C. look up error codes
D. turn the printer off, then on again
E. remove the jammed paper
Answer» B. check all voltages
3194.

What component would most likely cause a "parity error"?

A. bad hard disk
B. bad controller
C. bad RAM
D. bad software
E. None of the above
Answer» D. bad software
3195.

You have just installed a new internal PCI modem on you desktop. It will not dial out. what is the problem?

A. The port speed is set too high
B. the modem has not been set up in control panel properties
C. the phone line is plugged into the line-in port on the modem card
D. the phone line out of the wall is plugged into the phone port on the modem card
E. None of the above
Answer» E. None of the above
3196.

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

A. Clean the developer tank
B. Reset the printer
C. Run several blank pages
D. Clean the laser diode
E. None of the above
Answer» D. Clean the laser diode
3197.

Whenever you have a hardware resource conflict, it will more likely be an IRQ conflict rather than an i/o conflict because:

A. there are a lot more I/O addresses than IRQs.
B. the BIOS sometimes has more of a problem controlling IRQs
C. I/O addresses cannot conflict
D. software tends to correct I/O conflicts
E. software tends to mess up IRQs
Answer» B. the BIOS sometimes has more of a problem controlling IRQs
3198.

What tool is used to test serial and parallel ports?

A. high volt probe
B. cable scanner
C. loop backs (wrap plugs)
D. sniffer
E. None of the above
Answer» D. sniffer
3199.

Which best describes a fragmented hard drive:

A. The platters are bad
B. Data files are corrupted
C. Clusters of data are damaged
D. Files are not stored in consecutive clusters
E. None of the above
Answer» E. None of the above
3200.

If a computer's BIOS allows it, you can boot from a CD-ROM.

A. True
B. False
Answer» B. False