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25-Comp-B5 Computer Communications: December 2014

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 The OSI Reference Model and ISO
  2. Question 2 Required Bit Rate for a Document Download
  3. Question 3 FDM Bandwidth for 10 Voice Channels
  4. Question 4 Cyclic Redundancy Check (CRC)
  5. Question 5 HTTP, WWW, and URL
  6. Question 6 Spread Spectrum Techniques
  7. Question 7 Networking and Communications Terminology

Start with Question 1 →

98-Comp-B5, Computer Communications — National Exams, December 2014. 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. — the OSI reference model (Ch.2, Q1), multiplexing/FDM (Ch.8, Q3), spread spectrum (Ch.9, Q6), and physical/link-layer terminology (Ch.3, 9, 11, 17, Q7); Kurose & Ross, Computer Networking: A Top-Down Approach, 7th ed. — throughput and bit-rate fundamentals (Ch.1, Q2), error detection via CRC (Ch.5, Q4), the Web/HTTP/URL (Ch.2, Q5), and TCP/IP (Ch.1, Q7).