Computer Science - Computer Hardware

16.
The floppy drive uses which DMA (direct memory access) channel?
5
4
1
9
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
The DC voltage on most circuit boards is:
-12 volts
0 volts
+5 volts
+12 volts
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
A customer attached an external drive to his notebook computer but the computer is not recognizing it. What should be considered?
The cables are attached firmly
The external drive has been pre¬loaded with the appropriate software
The external drive was attached before the computer was on
The external drive is turned on
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
"Parity" errors usually indicate bad memory.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
What device protects against line deficiencies?
Surge protector
UPS
Logic probe
Capacitor
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.