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Computer Hardware

Computer Hardware
What is the i/o address for com2?

None of the listed here
2vb
8f8
2f8

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

None of these
3
7
8
4

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Computer Hardware
What command is used to hand up a MODEM when using the "AT Answer Command set"?

ATD
None of these
ATH
ATR
ATZ

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Computer Hardware
What is the size of a sector?

256 bytes
1024 bytes
None of these
512 Kb
512 bytes

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

44124
43952
15 - 25
2.5 - 5
50 - 110

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Computer Hardware
When seeking to upgrade for a particular motherboard what do you need to know?

None of these
memory
make & model
hard drive
dimm

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