If the memory access time is denoted by 'ma' and 'p' is the probability of a page fault (0

Question

If the memory access time is denoted by 'ma' and 'p' is the probability of a page fault (0 <= p <= 1). Then the effective access time for a demand paged memory is
A)p x ma + (1-p) x page fault time
B)ma + page fault time
C)(1-p) x ma + p x page fault time
D)none of the mentioned

Quizplus · Accepted Answer

The effective access time for a demand paged memory is calculated by considering both the time it takes to access a page when there is no page fault and the time it takes when there is a page fault. The probability 'p' represents the chance of a page fault occurring. Therefore, the effective access time is a weighted sum of the memory access time (when there is no page fault) and the page fault service time (when there is a page fault), which is given by the formula: (1-p) x ma + p x page fault time.

If the Memory Access Time Is Denoted by 'Ma' and 'P