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ISRO | ISRO CS 2016 | Question 48

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  • Last Updated : 27 Mar, 2018
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In which one of the following page replacement policies, Belady’s anomaly
may occur?
(B) Optimal

Answer: (A)

Explanation: Belady’s Anomaly is a situation in which increasing the number of frames allocated to a process results in increased number of page faults. This usually happens in FIFO page replacement algorithm. The anomaly occurs when the page replacement algorithm will remove a page that will be needed in the immediate future.
Option (A) is correct.

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