EEC 612 Network Protocols Standard Exam 2022

About this paper

EEC 612: Second semester examination (June 2022) for EEC612 (Network Protocols Standard) at the University of Buea College of Technology, set by Sone Ekonde. A dense four-question networking paper: Question 1 (compulsory) covers de jure/de facto standards, the ITU sectors, OSI/TCP-IP layering principles, why CRC is placed in a trailer, a full CRC computation with error detection, and TCP throughput/efficiency over a high-bandwidth-delay-product link. Question 2 covers finite-state-machine and CFSM protocol modeling, reachability graphs, and queueing-based mean transfer time. Question 3 covers byte-count framing, HDLC bit stuffing, an ARP resolution scenario across a routed network, the hidden/exposed terminal problems and MACA, and stop-and-wait throughput over a satellite link. Question 4 covers ARQ techniques (stop-and-wait, Go-Back-N, selective repeat), a worked Go-Back-N timing scenario, sliding-window link utilization, and connection-oriented vs connectionless service.