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
Select an option to see the answer and solution.
A parity error usually indicates a problem with:
A. memory
B. hard drive
C. hard drive controller
D. I/O controller
E. power supply
Select an option to see the answer and solution.
What is the i/o address for com1?
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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
Select an option to see the answer and solution.
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
Select an option to see the answer and solution.
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
Select an option to see the answer and solution.
In laser technology, what happens during the transfer stage?
A. Residual toner is transferred to the waste receptacle
B. The laser transfers the image from the drum to the paper.
C. The image is transferred from the drum to the paper
D. A negative charge is transferred to the surface of the drum
E. None of the above
Select an option to see the answer and solution.
How many IRQs does a chain of USB devices require?
A. 1
B. 2
C. 3
D. 4
E. None of the above
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Resistance is measured in units of:
A. ohms
B. farads
C. helids
D. amperes
E. volts
Select an option to see the answer and solution.
Which provides the fastest data access time?
A. RAM
B. ROM
C. CD-ROM
D. Hard disk
E. Floppy disk
Select an option to see the answer and solution.
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
Select an option to see the answer and solution.
Which component must be vacuumed or replaced during preventative maintenance on a laser printer?
A. Scanning mirror
B. Toner cartridge
C. Ozone filter
D. All of the above
E. None of the above
Select an option to see the answer and solution.
Which controller would support an external CD-ROM drive?
A. ESDI
B. ARLL
C. MFM
D. SCSI
E. None of the above
Select an option to see the answer and solution.
In inkjet printers, what is the most common problem with the paper tray?
A. inconsistent printing
B. malfunctioning pick-up rollers
C. misalignment of the sheet feeder
D. paper jamming on the ink cartridge
E. None of the above
Select an option to see the answer and solution.
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
Select an option to see the answer and solution.
The DC voltage on most circuit boards is:
A. -12 volts
B. 0 volts
C. +5 volts
D. +12 volts
E. None of the above
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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
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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
Select an option to see the answer and solution.
What configuration should a Volt-Ohm meter he set to when testing a fuse?
A. DC volts
B. AC volts
C. Amperage
D. Ohms
E. None of the above
Select an option to see the answer and solution.
What voltage does a 586 system use?
A. +12 volts
B. + 5 volts
C. + 8 volts
D. +3.3 volts
E. None of the above
Select an option to see the answer and solution.