Computer Basic Information
An advantage of overlapped processing activities is:

All listed here
better coordination of I/O activities
None of these
increased processing activities for the entire system
more effective use of the CPU

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Computer Basic Information
Which of the following is not true of a magnetic disk?

All of these
Users can easily update records by writing over the old data
It provides only sequential access to stored data
It does not provide an automatic audit trail
It is expensive relative to magnetic tape

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