Computer Basic Information
In MODEMS

Digital signal is amplified
Several digital signals are multiplexed
All of these
None of these
A digital signal changes some characteristic of a carrier wave

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Computer Basic Information
Which of the following is not an advantage of magnetic disk storage?

Disk storage is longer lasting than magnetic tape
Disk storage is less expensive than tape storage
None of these
The access time of magnetic disk is much less than that of magnetic tape
All of these

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