Multiple choice

_____ is one of the primitive operations of semaphore.

  1. SIGNAL

  2. BUSY

  3. HALT

  4. None of these

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

SIGNAL (also called V or up operation) is one of the two fundamental semaphore operations, along with WAIT (P or down operation). SIGNAL increments the semaphore value, potentially waking a waiting process. BUSY and HALT are not semaphore primitives.