When using the clock replacement policy, a page with a reference bit of ____ is replaced.
A) -1
B) 0
C) 1
D) 5

Question

Quizplus · Accepted Answer

In the clock replacement policy, the reference bit of a page is set to 0 when it is first loaded into memory. As the clock sweeps around, the reference bit is checked. If it is 0, that means the page has not been accessed recently and it is a candidate for replacement. If the reference bit is 1, it is set to 0 and the clock continues to sweep. Therefore, pages with a reference bit of 0 are replaced in the clock replacement policy.

When Using the Clock Replacement Policy, a Page with a Reference