When mutex lock is implemented as a binary semaphore, what should its value be initialized to be?
A) 0
B) 1
C) -1
D) none of the above

Question

Quizplus · Accepted Answer

When a mutex lock is implemented as a binary semaphore, it should be initialized to 1 because the mutex protects a shared resource and only one process should have access to it at a time. Therefore, the initial value of the semaphore should allow one process to acquire it and access the shared resource, while blocking any other process from accessing it until the mutex is released. A value of 0 or -1 would prevent the first process from acquiring the mutex lock and accessing the shared resource.

When Mutex Lock Is Implemented as a Binary Semaphore, What