City Guilds Model Questions Vol1 2021 Information Technology Question 2

Practice practical question 2 from the 2021 City Guilds Model Questions Vol1 Information Technology examination. This question covers Operating Systems .

City Guilds Model Questions Vol1 2021 Information Technology Practical
Topic: Operating Systems
Question 2 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2021 • INFORMATION_TECHNOLOGY • practical

In a laboratory computer‑systems class you are given the following set of processes that arrive at time 0 ms: | Process | Burst time (ms) | |---------|-----------------| | P1 | 10 | | P2 | 4 | | P3 | 6 | | P4 | 8 | The scheduler uses a Round‑Robin algorithm. Answer the questions below.

Question Parts

( a )
Using a time quantum of 4 ms, draw the Gantt chart showing the order in which the CPU executes the processes until all have completed.
( b )
Calculate the average waiting time of the four processes under this quantum.
( c )
Calculate the average turnaround time of the four processes under this quantum.
( d )
If the time quantum is increased to 8 ms, briefly explain how the average waiting time and the number of context switches would be affected, without performing full calculations.

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About This Question

This is City Guilds Model Questions Vol1 2021 Information Technology Question 2. It is one of the practical questions from the 2021 City Guilds Model Questions Vol1 Information Technology examination.

The question covers Operating Systems .

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