試題詳解

6. Assuming a memory access time of 250 nanoseconds and an average page fault handling time of70 microseconds, what is the expected page fault rate if you want to ensure that the effective access time is less than 270 nanoseconds?
(A) 0.002%
(B) 0.02%
(C) 0.2%
(D) 2%
(E) 20%