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Which algorithm chooses the page that has not been used for the longest period of time whenever the page required to be replaced?

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Which algorithm chooses the page that has not been used for the longest period of time whenever the page required to be replaced?

(a) first in first out algorithm

(b) additional reference bit algorithm

(c) least recently used algorithm

(d) counting based page replacement algorithm

This question was addressed to me in final exam.

This key question is from Virtual Memory topic in division The Linux System of Operating System

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Right choice is (c) least recently used algorithm

The explanation: None.

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