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

The question was posed to me by my college director while I was bunking the class.

My question is based upon Virtual Memory topic in portion The Linux System of Operating System

Answer 1

The correct option is (c) (1-p) x ma + p x page fault time

The best I can explain: None.