Multiple choice

____ decrement(s) the value of its/their argument semaphore.

  1. SIGNAL

  2. WAIT

  3. Both 1 and 2

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

WAIT operation decrements the semaphore value. If the result is negative, the process is blocked. SIGNAL increments the semaphore. This is the fundamental semaphore operation pair for process synchronization.