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(1) What is meant by pre-emptive scheduling? (4 marks) (2) Describe the following scheduling algorithms (9 marks) - Non Pre-Emptive, First Come, First Serve -

(1) What is meant by pre-emptive scheduling? (4 marks) (2) Describe the following scheduling algorithms (9 marks) - Non Pre-Emptive, First Come, First Serve - Round Robin - Shortest Job First (2) Given the following processes and burst times Calculate the average wait time when each of the above scheduling algorithms is used? Assume that a quantum of 6 is being used. (12 marks)

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