Consider a demand paging system with three frames, and the following page…
GATE · 2025 · CS · Set 2 · Computer Science & IT
Consider a demand paging system with three frames, and the following page reference string: 1 2 3 4 5 4 1 6 4 5 1 3 2. The contents of the frames are as follows initially and after each reference (from left to right):

The *-marked references cause page replacements.
Which one or more of the following could be the page replacement policy/policies in use?
- A.
Least Recently Used page replacement policy
- B.
Least Frequently Used page replacement policy
- C.
Most Frequently Used page replacement policy
- D.
Optimal page replacement policy
Attempted by 4 students.
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