CEC 461 Information Security Systems Exam 2026

About this paper

CEC 461: First Semester Examination for CEC461, Information Systems Security, College of Technology, University of Buea, instructor Sone Ekonde (29 January 2026) -- a duplicate copy of the same paper as ID 2959. Question 1 covers firewall design goals, application-level and circuit-level gateways, matching firewall settings to policies, a packet filter rule set and stateful filtering, and a screened-subnet firewall diagram. Question 2 covers the Biba integrity model scenario, honeypot design goals and DMZ placement, signature-based intrusion detection, and the four IDS modules. Question 3 covers 4-digit PIN brute-forcing via Anderson's formula, authentication factor categories, DES password-cracking time estimation, VPN packet structure, and CVE/vulnerability/exploit/zero-day definitions.