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Which of the following does not need to have a semaphore?

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Which of the following does not need to have a semaphore?

(a) double buffer

(b) single buffer

(c) buffer exchange

(d) directional buffer

I have been asked this question in an internship interview.

Origin of the question is Buffer Exchange in division Buffering and other Data Structures of Embedded Systems

1 Answer

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Best answer
Correct option is (c) buffer exchange

Explanation: There are many advantages over the buffer exchange. One such is that it will not have a semaphore to control any shared memory or buffers.

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