This document is a question paper for the 2008 Anna University B.E Computer Science course ANALOG AND DIGITAL COMMUNICATION-EC1291. It contains 15 questions across two sections (Part A and Part B) testing knowledge of topics in analog and digital communication systems including amplitude modulation, frequency modulation, pulse code modulation, error detection, spread spectrum communication, and multiple access techniques. Questions require calculations related to modulation indices, bandwidth, signal-to-noise ratios, and specifications of communication system components and their operating principles.