The dirty (modify) bit identifies
A) a page that has been corrupted.
B) a page that needs to be reloaded when accessed.
C) a page that is shared by multiple processes.
D) a page that has been modified since it was loaded.

Question

Quizplus · Accepted Answer

The dirty bit in the page table of an operating system identifies a page that has been modified since it was loaded into memory. This helps the operating system to know which pages need to be written back to disk when memory is needed for other processes. It is not related to corruption or sharing, and it does not indicate that the page needs to be reloaded when accessed.

The Dirty (Modify) Bit Identifies