Computer Basic Information
The disadvantage of dynamic RAM over static RAM is

higher power consumption
higher bit density
None of these
need to refresh the capacitor charge every once in two milliseconds
variable speed

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

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

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