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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
A virtual memory system uses first-in first-out page replacement policy and allocates a fixed number of frames to a process.
Assertion A: Increasing number of page frames allocated to a process sometimes increases the page fault rate.
Reason R: Some programs do not exhibit locality of reference.
In the light of the above statements, choose the correct answer from the options given below.
Solution
Assertion A is true because FIFO page replacement may show Belady’s anomaly.
In Belady’s anomaly, increasing the number of page frames can sometimes increase the number of page faults.
Reason R is true, but it is not the correct explanation of Assertion A.
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