ISRO | ISRO CS 2020 | Question 44

Consider the following page reference string.

1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6 

What are the minimum number of frames required to get a single page fault for the above sequence assuming LRU replacement strategy ?
(A) 7
(B) 4
(C) 6
(D) 5


Answer: (C)

Explanation:

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