City Guilds Model Questions Vol1 2023 Information Technology Question 8
Practice objective / multiple choice question 8 from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
Four processes arrive for CPU scheduling as shown (times in milliseconds). The scheduler uses **pre‑emptive priority scheduling** where a higher numeric priority pre‑empts a lower one; if priorities are equal, the earlier‑arriving process runs first. | Process | Arrival | Burst | Priority | |---------|---------|-------|----------| | P1 | 0 | 8 | 2 | | P2 | 1 | 4 | 3 | | P3 | 2 | 9 | 1 | | P4 | 3 | 5 | 2 | Calculate the **average waiting time** of the four processes. (Waiting time = total time a process spends in the ready queue.)
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This is City Guilds Model Questions Vol1 2023 Information Technology Question 8. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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