試題詳解

(九) Consider this set of process p, where P={p₁, p₂, p₃, p₄}, as show in Table 1. The processes are assumed to have arrived in the order p₁, p₂, p₃, p₄. What is the average waiting time for FCFS (first come first serve) algorithm?
(A) 9
(B)7
(C)11.25
(D) 11.5