OS CPU Scheduling

the total time taken from the submission time till the completion time

the total time taken from the submission time till the first response is produced

the total time taken from submission time till the response is output

none of the mentioned

tQ = 15ms

tQ = 40ms

tQ = 45ms

tQ = 50ms

First come First served

Shortest Job First

Earliest Deadline First

Longest Job First

job queue

ready queue

execution queue

process queue

a few very short CPU bursts

many very short I/O bursts

many very short CPU bursts

a few very short I/O bursts

waiting time

turnaround time

response time

throughput

FCFS – First come First served

SJF – Shortest Job First

RR – Round Robin

None of the mentioned

When a process switches from the running state to the ready state

When a process goes from the running state to the waiting state

When a process switches from the waiting state to the ready state

All of the mentioned

Lengthened; Shortened

Shortened; Lengthened

Shortened; Shortened

Shortened; Unchanged

first executes the job that came in last in the queue

first executes the job that came in first in the queue

first executes the job that needs minimal processor

first executes the job that has maximum processor needs