state gov PSTCL/PSPCL Clerk Mock Test 2021 Operating Systems CPU Scheduling Process Scheduling

Consider the following.

Process ID CPU Burst Arrival Time

P1

5

0

P2

7

2

P3

3

3

 

The completion order of the three processes under the policies FCFS and RR (with CPU quantum of 2 time units) are:

1
FCFS: P1, P2, P3 and RR: P3, P1, P2
2
FCFS: P1, P2, P3 and RR: P1, P2, P3
3
FCFS: P1, P2, P3 and RR: P3, P2, P1
4
FCFS: P1, P3, P2, and RR: P1, P2 P3
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