STQC-NIELIT STA 2021
November 27, 2023UGC NET CS 2011 June-Paper-2
November 27, 2023NTA UGC NET JUNE-2023 Paper-2
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Question 99
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Consider the following table of arrival time and burst time for three processes PO,P1,P2:
| Process | Arrival time | Burst time |
| P0 | 0 ms | 7 |
| P1 | 1 ms | 3 |
| P2 | 2 ms | 7 |
The pre-emptive shortest job first scheduling algorithm is used. Scheduling is carried out only at arrival or completion of a process. What is the average waiting time for the three processes?
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3 ms
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3.67 ms
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4.47 ms
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4 ms
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Correct Answer: B