Question: A semaphor uses a / an variable to protect a critical section . 3 . ( Single Choice, 2 5 ) A mutext lock protects

A semaphor uses a/an variable to protect a critical section.3.(Single Choice, 25)
A mutext lock protects a critical section by first acquire() a lock then release() the lock, it requires
A.busy waiting
B.no busy waiting
A semaphor uses a/an variable to protect a critical section.3.(Single Choice,

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