Exercise: Operating Systems Concepts

Questions for: Operating Systems Concepts

When did IBM release the first version of disk operating system DOS version 1.0?
A:
1981
B:
1982
C:
1983
D:
1984
Answer: A
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Trojan-Horse programs
A:
are legitimate programs that allow unauthorized access
B:
do not usually work
C:
are hidden programs that do not show up on the system
D:
usually are immediately discovered
Answer: A
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Which, of the following is not true about the description of a decision table?
A:
A decision table is easy to modify
B:
A decision table is directly understood by the computer
C:
A decision table is easy to understand
D:
All of the above
Answer: B
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Block caches or buffer caches are used
A:
to improve disk performance
B:
to handle interrupts
C:
to increase the capacity of the main memory
D:
to speed up main memory read operation
Answer: A
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The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk, is known as
A:
multiprogramming
B:
spooling
C:
caching
D:
virtual programming
Answer: B
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