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Exam Review

This exam review covers topics such as circuit-switched and packet-switched networks, addressing, multiplexing, network performance, internet architecture, SMTP, link layer encoding/decoding, error detection, reliability, core Ethernet, implementing mutual exclusion, and network programming.

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Exam Review

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  1. Exam Review Networking CS 3470, Section 1 Sarah Diesburg

  2. Coverage • Total: 50 points; 1 min / point • 43-45 points based on lectures, assignments, and project 1a • 5-7 points based on your ability to apply various principles learned in the class • Multiple choice, short answer, and problem solving questions

  3. Introduction and Foundations • Definitions • Circuit-switched network • Packet-switched network • Network • Gateway • Switch

  4. Introduction and Foundations • Definitions • Addressing • Unicast, multicast, broadcast • Multiplexing

  5. Introduction and Foundations • Short answers • Compare and contrast types of multiplexing • Synchronous Time-Division Multiplexing (STDM) • Frequency-Division Multiplexing (FDM) • Statistical Multiplexing

  6. Network Performance • Definitions • Bandwidth • Latency • Length and width of a bit • Delay x Bandwidth • Return Trip Time (RTT) • Jitter

  7. Network Performance • Short answers • Find the latency • Find the RTT • Find the Delay x Bandwidth

  8. Internet Architecture • Definitions • Protocols and Encapsulation • Fragmentation/defragmentation

  9. Internet Architecture • Short answers • List Internet Model layers and explain each layer • List ISO/OSI Model layers and explain each layer

  10. SMTP • Short answers • What is RFC? • What is SMTP? • What commands do you use to send an email through the SMTP protocol? • What port does an SMTP server listen on?

  11. Link Layer Encoding/Decoding • Definitions • Encode • Decode • Network adaptors • Baseline wander • Clock recovery • Bit stuffing • Frame

  12. Link Layer Encoding/Decoding • Short answers • Be able to chart NRZ, NRZI, Manchester • Be able to explain the purpose behind 4B/5B • Be able to explain why a clock is necessary

  13. Error Detection • Definitions • 2-D Checks • Internet Checksums • Cyclic Redundancy Check

  14. Error Detection • Short answers • CRC

  15. Reliability • Definitions • Acknowledgement (ACK) • Timeouts

  16. Reliability • Short answers • Stop-and-wait • Sliding window

  17. Core Ethernet • Definitions • CSMA/CD • Repeater • Collision domain • MAC address • Runt frame • Polling • Token Passing

  18. Implementing Mutual Exclusion • Short answers • Layout of core ethernet • Total reach, number of repeaters • When will an Ethernet adapter accept a frame? (3 conditions)

  19. Network Programming • Definitions • Socket • Client-Server Model • Port

  20. Network Programming • Short answers • Control flow of simpletalk client and server

  21. Be able to fill this in… Server socket() bind() Well-known port Client listen() socket() accept() blocks until connection from client connect() Connection establishment fgets() recv() Data(request) process request fputs() send()

  22. Be able to explain what each thing does… Server socket() bind() Well-known port Client listen() socket() accept() blocks until connection from client connect() Connection establishment fgets() recv() Data(request) process request fputs() send()

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