Computer Basic Information
What is meant by quad-density (QD) diskette?

It is double-sided disk
It has double the number of tracks per inch
None of these
All of these
It is double density disk

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Computer Basic Information
The magnetic disks and drums are like recirculating shift registers because

None of these
they have about the same storage capacity
stored data is available for reading over and over again in the same order.
their storage is non volatile
their access times are about the same

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