Stack algorithms are a class of page replacement algorithms that
A) are implemented using stacks.
B) are guaranteed to incur the least number of page faults.
C) do not suffer from Belady's anomaly.
D) are guaranteed to incur no more page faults than FIFO page replacement algorithm.

Question

Quizplus · Accepted Answer

Stack algorithms are designed to avoid Belady's anomaly, where adding more physical memory can result in more page faults. They achieve this by treating memory accesses as a stack, where the most recently accessed page is at the top. When a page fault occurs, the bottom of the stack is removed, and the new page is added to the top. This approach ensures that frequently accessed pages remain at the top of the stack and are less likely to be replaced. Therefore, stack algorithms are guaranteed to incur no more page faults than FIFO page replacement algorithm.

Stack Algorithms Are a Class of Page Replacement Algorithms That