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

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

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Computer Basic Information
What is the main difference between a mainframe and a super computer?

None of these
Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.
Super computers are much smaller than mainframe computers.
Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently.
Super computer is much larger than mainframe computers.

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