Which page replacement algorithm replaces the page that

Solution

The Optimal Page Replacement algorithm is considered the ideal page replacement strategy. It looks ahead to determine which page will not be needed for the longest time in the future and replaces that page. Although it is not feasible to implement in practice because it requires future knowledge, it serves as a benchmark against which other algorithms can be compared. Optimal page replacement minimizes the number of page faults and maximizes the efficiency of memory use. Option A (FIFO) is incorrect because it simply replaces the oldest page in memory without considering future needs. Option B (LRU) is incorrect as it replaces the least recently used page, which may not always be the best choice for future memory access. Option D (Clock Page Replacement) is incorrect because it uses a circular list to manage pages and replaces those that have not been used recently, rather than considering future requests. Option E (Second Chance Algorithm) is incorrect as it gives pages a second chance if they have been accessed recently, but it still does not use future knowledge to make optimal decisions.