N processes are waiting for I/O. A process spends a fraction p of its time in I/O wait state. The CPU utilization is given by:
A. 1-p-N
B. 1-pN
C. pN
D. p-N
Answer:B
N processes are waiting for I/O. A process spends a fraction p of its time in I/O wait state. The CPU utilization is given by:
A. 1-p-N B. 1-pN C. pN D. p-N
Explanation: According to the probabilistic model, if a process spends a fraction p of its time in I/O wait state, and if there are N processes in memory, then the CPU utilization is given by 1-pN