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ISRO | ISRO CS 2020 | Question 40

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  • Last Updated : 04 Sep, 2020
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The hardware implementation which provides mutual exclusion is
(A) Semaphores
(B) Test and set instruction
(C) Both options
(D) None of the options

Answer: (B)

Explanation: TSL (Test and set instruction) is obviously hardware solution.

Semaphores need kernel support to make P and V operation atomic but hardware support isn’t essential.

Option (B) is correct.

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