What is Page Fault? And When the Operating Systems need to use the Page replacement Algorithms?
2. How many page faults and page replacement occur in the FIFO (First in First Out) replacement algorithm with the following reference string for THREE – page frames? (Reference String: 1,2,3,4,2,1,3,2,3,4,1)
3. How many page faults and page replacement occur in the OPR (Optimum Page Replacement algorithm) with the following reference string for THREE – page frames? (Reference String: 1,2,3,4,2,1,3,2,3,4,1)
4. How many page faults and page replacement occur in the LRU (Least Recently Used) Page Replacement algorithm) with the following reference string for THREE – page frames? (Reference String: 1,2,3,4,2,1,3,2,3,4,1)