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The optimal page replacement algorithm is not implemented in real computer systems because: a) It requires adding a large number of modules to the processor
The optimal page replacement algorithm is not implemented in real computer systems because: a) It requires adding a large number of modules to the processor hardware, which cannot to be satisfied by processor designers/manufacturers. b) Has performance problems due to the occurrence of "Belady Anomaly". c) Other algorithms are used that cause fewer page faults. d) It requires information that will be produced later (future) during the execution of one process.
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