Q. 69 An operating system uses Shortest Remaining Time first (SRT) process scheduling algorithm. Consider the arrival times and execution times for the following processes:
Process Execution time Arrival time P1 20 0 P2 25 15 P3 10 30 P4 15 45
What is the total waiting time for process P2?
(A) 5
(B) 15
(C) 40
(D) 55
Answer: (B)
Explanation:
