Final answer:
The Clock replacement or Circular buffer policy treats the page frames as a circular buffer and removes pages in a round robin style. It is used by operating systems to manage memory efficiently and fairly.
Step-by-step explanation:
The policy that treats the page frames allocated to a process as a circular buffer and pages are removed in a round robin style is known as the Clock replacement policy or sometimes also referred to as the Circular buffer policy.
In this policy, the operating system keeps track of all the page frames in a circular queue. When a page needs to be swapped out, the clock (or second-chance) algorithm will replace the page that is pointed to by a rotating pointer, which moves to the next frame after a page replacement.
This ensures that pages are replaced in a fair, round robin fashion, preventing any single page from being favored or continuously penalized.
The clock policy treats the page frames allocated to a process as a circular buffer and pages are removed in a round robin style. This means that when a page fault occurs, the operating system replaces the oldest page in the buffer with the requested page. If the buffer is full, the replacement starts again from the beginning of the buffer.