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Computer Hardware

Computer Hardware
How many IRQs does a chain of USB devices require?

4
1
None of these
2
3

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Computer Hardware
Which peripheral port provides the FASTEST throughput to laser printers?

RS-232
None of these
Serial
SCSI
Parallel

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Computer Hardware
What voltage does a 586 system use?

+3.3 volts
None of these
+ 5 volts
+ 8 volts
+12 volts

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Computer Hardware
What command is used to reset a MODEM when using the

DCE
None of these
ATR
DTR
ATZ

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Computer Hardware
Suppose that the power lamp in on, but the printer will not print. What can you do to correct the problem?

Replace the AC line fuse
Turn the printer on and off
Make sure the printer is on line
Replace the ribbon

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Computer Hardware
A keyboard locks up intermittently even when replaced with a new keyboard. What is the LEAST likely cause of the problem?

The keyboard connector
None of these
The motherboard
The keyboard controller chip
A second bad keyboard

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