Exam2026Proposed solution included

CSC 314 HCI AND USER INTERFACE DESIGN Exam 2026

CSC 314: Second Semester Examination, University of Buea, Faculty of Science, Department of Computer Science, Course CSC314 Operating Systems, Instructor Dr NYAMSI, Wednesday 08 July 2026: Questions on Reading and Comprehension (30 marks) covering the User View vs System View of an operating system, base/limit registers for memory protection, five user-oriented OS services, logical vs physical addresses, paging address-decomposition fill-in-the-blanks, and why loading base/limit registers is a privileged instruction. Exercise 1 (15 marks): Round Robin CPU scheduling (quantum 2ms) for three processes, requiring a Gantt chart, turnaround time and waiting time computations. Exercise 2 (15 marks): page-replacement algorithms (FIFO, Optimal, LRU) applied to a reference string with 4 frames, computing page faults for each. Exercise 3 (10 marks, optional): Effective Access Time calculation given a page-fault rate. Exercise 4 (10 marks, optional): resource-allocation graph construction and deadlock analysis for three processes and three resources.

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University of Buea

Faculty of Science - FS

Computer Science - CSC

CSC3142026

HCI AND USER INTERFACE DESIGN

Exam · Second Semester · Level 300

From this paper

1.
Operating systems can be explored from two distinct viewpoints: the User View and the System View. Briefly explain the focus and goals of each viewpoint. (5 marks)
2.
To ensure robust system reliability, hardware protection mechanisms are integrated into modern computer architecture. Explain how Base registers and Limit registers work together to provide memory protection when multiple concurrent processes reside in memory. (5 marks)