CSC 314 Operating Systems CA 2026

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CSC 314: Continuous Assessment, University of Buea, Faculty of Science, Department of Computer Science, Course CSC314 Operating Systems, Friday 08 May 2026. Reading and Comprehension (15 marks): 15 short-answer questions on OS fundamentals -- definition of an OS, OS services, OS components, multi-processing, privileged instructions, the process control block, schedulers, process-management activities, preemptive vs non-preemptive scheduling, resource-use sequence, CPU-scheduling criteria, critical sections, inter-process communication, shared-memory vs message-passing IPC models, and threads. Exercise 1 (15 marks): a CPU-scheduling problem with six processes (priority, burst, arrival time) requiring computation of average turnaround and waiting time under non-preemptive FCFS and preemptive SJF (SRTF), a Gantt chart and per-process completion/turnaround/waiting times under Round Robin (quantum 10), and a comparative discussion of the three policies' performance. Source was a graded handwritten student CA script; only the printed questions were used, and independent correct solutions were derived rather than transcribing the student's handwritten answers or grader's marks.