Test by Bikram | Operating Systems | Test 2 | Question: 27

Question

A counting semaphore is initialized to $10$. The $6$ P(wait) operations and $4$ V(signal) operations were completed in this semaphore. The resulting value of semaphore is:

• A. $0$
• B. $8$
• C. $10$
• D. $12$

Answer 1

In P operation semaphore value is reduced by 1. In V operation semaphore value is increased by 1
 so the  resulting value of semaphore is : Initial value - number of P + number of V = (10 - 6 )+ 4 = 8