An operating system uses shortest remaining time first scheduling algorithm for pre-emptive scheduling of processes. Consider the following set of processes with their arrival times and CPU burst times (in milliseconds): Process Arrival Time Burst Time P1 0 12 P2 2 4 P3 3 6 P4 8 5 The average waiting time (in milliseconds) of the processes is _________.

An operating system uses shortest remaining time first scheduling algo

1.	An operating system uses shortest remaining time first scheduling algorithm for pre-emptive scheduling of processes. Consider the following set of processes with their arrival times and CPU burst times (in milliseconds): Process Arrival Time Burst Time P1 0 12 P2 2 4 P3 3 6 P4 8 5 The average waiting time (in milliseconds) of the processes is _________.
A.	4.5
B.	5.0
C.	5.5
D.	6.5
Answer» D. 6.5

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