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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 mentionedI got this question in an online interview.This intriguing question comes from I/O System topic in portion I/O Systems of Operating System |
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Answer» Correct option is (B) PROGRAMMED I/O is more efficient than interrupt driven I/O |
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