Quiz1

If a lock uses a boolean for implementation, what does a semaphore use?

Multiple threads could return from a sem_wait() without having had any sem_post() called

• True

• False

When referring to semaphores, V() is equivalent to sem_wait()

• True

• False

What should the initial value of a semaphore be to implement waiting on a thread (i.e. join)?

• -1

• 0

• 1

• 2

Any semaphore initialized to 1 could be directly replaced by a lock

• True

• False