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Question

If the number of cycles spent busy – waiting is not excessive, then :

a.

interrupt driven I/O is more efficient than programmed I/O

b.

programmed I/O is more efficient than interrupt driven I/O

c.

both programmed and interrupt driven I/O are equally efficient

d.

none of the mentioned

Posted under IO Systems Operating System

Answer: (b).programmed I/O is more efficient than interrupt driven I/O

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Q. If the number of cycles spent busy – waiting is not excessive, then :
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