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Computer Hardware

Computer Hardware
How many DMA channels are in an AT-machine?

8
None of these
7
4
3

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Computer Hardware
How does a parallel port communicate information to a peripheral device?

8 bytes at a time
16,555 bytes at a time
one byte at a time
one bit at a time
None of these

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Computer Hardware
Which component stores an electrical charge?

transistor
diode
capacitor
rectifier
resistor

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Computer Hardware
What is the highest binary number that can be referred to on a three position jumper block?

6
4
7
1

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Computer Hardware
How many devices does USB support?

100
127
125
None of these
225

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

Defect in the computers video circuitry
Disconnected video cable
System RAM problem
None of these
Defective monitor

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