A virtual memory system uses FIFO page replacement policy and allocates a…
2017
A virtual memory system uses FIFO page replacement policy and allocates a fixed number of frames to the process. Consider the following statements.
M : Increasing the number of page frames allocated to a process sometimes increases the page fault rate
N : Some programs do not exhibit locality of reference.
Which one of the following is true?
- A.
Both M and N are true and N is the reason for M
- B.
Both M and N are true and N is not the reason for M
- C.
Both M and N are false
- D.
M is false, but N is true
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Correct answer: B
Statement M is true due to Belady's Anomaly, where increasing frames in FIFO can increase page faults. Statement N is true as some programs lack locality of reference. Both statements are factually correct.