January 11, 2019 | GATE Computer Science CSE/IT Lectures in Hindi | Leave a comment Views:0|Rating:0.00|View Time:3:16Minutes|Likes:0|Dislikes:0In this video question which was asked in the exam of GATE 2018 is discussed. Question :- Consider a process executing on an operating system that uses demand paging. The average time for a memory access in the system is M units if the corresponding memory page is available in memory, and D units if the memory access causes a page fault. It has been experimentally measured that the average time taken for a memory access in the process is X units. Which one of the following is the correct expression for the page fault rate experienced by the process ? A. (D-M)⁄(X-M) B. (X-M)⁄(D-M) C. (D-X)⁄(D-M) D. (X-M)⁄(D-X) Solution is given in the video.