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Optimal page replacement algorithm is also called as __________

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Optimal page replacement algorithm is also called as __________

(a) LIFO

(b) NRU

(c) Clairvoyant replacement algorithm

(d) Page buffering

This question was addressed to me by my college director while I was bunking the class.

My question is based upon Page Replacement Algorithms topic in section Page Replacement Algorithms of Data Structures & Algorithms II

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Right option is (c) Clairvoyant replacement algorithm

For explanation: Optimal page replacement algorithm is also called a Clairvoyant replacement algorithm or Belady’s optimal replacement algorithm.

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