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Describe the mechanism used by an Operating System to implement virtual memory. Also, consider a reference string: 1 , 2 , 3 , 4 ,

Describe the mechanism used by an Operating System to implement virtual memory. Also, consider a reference string: 1,2,3,4,1,2,3,5,7. The number of frames in the memory is 3. Find out the number of page faults occurred when FCFS, and LRU Page Replacement Algorithm is used.

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