Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
98-Comp-B5, Computer Communications — National Exams, May 2015. Closed-book, 3 hours; seven questions of equal value (20% each); ANY FIVE constitute a complete exam (all seven answered below as a complete study resource).
Reference texts: Stallings, Data and Computer Communications, 10th ed. — sampling and aliasing (Ch.5, Q1), channel capacity/Shannon-Hartley (Ch.3, Q2), PCM and uniform quantization (Ch.5, Q3), Manchester/Differential Manchester line coding (Ch.5, Q4), LAN/network topologies (Ch.16, Q5), spread spectrum (Ch.9, Q6), and physical/link/network-layer terminology (Ch.3, 6, 9, 16, 17, Q7); Kurose & Ross, Computer Networking: A Top-Down Approach, 8th ed. — application-layer protocols and transport-layer terminology (Ch.1–3, Q7).
