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UGC-NET | UGC NET CS 2018 July – II | Question 51

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At a particular time of computation, the value of a counting semaphore is 10. Then 12 P operations and “x” V operations were performed on this semaphore. If the final value of semaphore is 7, x will be: (A) 8 (B) 9 (C) 10 (D) 11

Answer: (B)

Explanation: Initially, the value of a counting semaphore is 10 Now 12 P operation are performed. Now counting semaphore value = -2 “x” V operations were performed on this semaphore and final value of counting semaphore = 7 i.e x + (-2) = 7 x = 9. So, option (C) is correct.

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Last Updated : 06 Sep, 2021
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