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25-Comp-B5 Computer Communications: December 2018

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

  1. Question 1 Sampling and Aliasing
  2. Question 2 Received Power Through a Cascaded Amplifier/Loss Chain
  3. Question 3 Channel Capacity — Required SNR
  4. Question 4 AM and FM — Definitions and Modulated-Signal Sketches
  5. Question 5 Cyclic Redundancy Check (CRC)
  6. Question 6 Network Topologies for a Shared Office LAN
  7. Question 7 QPSK Modulation of a Digital Sequence
  8. Question 8 IP Address Class, Network ID, Subnet ID, and Host ID
  9. Question 9 Technical Terminology

Start with Question 1 →

Reference texts: Stallings, Data and Computer Communications, 10th ed. — sampling and aliasing (Ch.5, Q1), cascaded gains/losses and decibels (Ch.3, Q2), Shannon–Hartley channel capacity (Ch.3, Q3), AM/FM analog modulation (Ch.5, Q4), LAN/network topologies (Ch.16, Q6), QPSK digital modulation (Ch.5, Q7), IP addressing and subnetting (Ch.18, Q8), and physical/link/network-layer terminology (Ch.3, 9, 11, 17, Q9); Kurose & Ross, Computer Networking: A Top-Down Approach, 8th ed. — error detection via CRC (Ch.5, Q5), IP addressing (Ch.4, Q8), and TCP/IP terminology (Ch.1, Q9).

This is a choose-any-5-of-9 exam; all nine questions are answered below.