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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