Question: 4. Consider the page reference string as 9,1,2,3,1,9,2,6,1,4,1,4,2,3, 1 with 3-page frames. Find the number of page faults and hit ratio using the following algorithms.

4. Consider the page reference string as 9,1,2,3,1,9,2,6,1,4,1,4,2,3, 1 with 3-page

4. Consider the page reference string as 9,1,2,3,1,9,2,6,1,4,1,4,2,3, 1 with 3-page frames. Find the number of page faults and hit ratio using the following algorithms. With the aid of tables show each page fault or hit. a) First In First Out (FIFO) (5 Marks) b) Least Recently Used (LRU) (7 Marks) c) Optimal Page Replacement (OPT or MIN) (8 Marks) [Total: 20 Marks]

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