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What is a semaphore?

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+1 vote
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in Operating System by (102k points)
What is a semaphore?

(a) is a binary mutex

(b) must be accessed from only one process

(c) can be accessed from multiple processes

(d) none of the mentioned

I have been asked this question in a national level competition.

My enquiry is from Semaphores topic in division Process Synchronization of Operating System

1 Answer

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Best answer
Right option is (c) can be accessed from multiple processes

The best explanation: None.

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