Question: 4 . ( Single Choice, 2 5 ) A semaphore protects a critical section by wait ( ) and signal ( ) operations, with a

4.(Single Choice, 25)
A semaphore protects a critical section by wait() and signal() operations, with a waiting queue for each semaphore, so it could be implemented with q,
A.busy waiting
B.no busy waiting
4.(Single Choice, 25) A semaphore protects a critical section by wait()

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