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ISRO | ISRO CS 2011 | Question 73

  • Last Updated : 11 May, 2018

Belady’s anomaly means
(A) Page fault rate is constant even on increasing the number of allocated frames
(B) Page fault rate may increase on increasing the number of allocated frames
(C) Page fault rate may increase on decreasing the number of allocated frames
(D) Page fault rate may decrease on increasing the number of allocated frames


Answer: (B)

Explanation: Belady’s Anomaly is situation when increasing the number of page frames allocated to a process increase the number of page faults. This generally occurs in FIFO page replacement algorithm.

Refer: Page Replacement Algorithms

Option (B) is correct.

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