Homework Assignment 6

CS 3011

5 points, Due Thursday, December 6

The following should be turned in.

  1. (1 point) Briefly describe the functions of the following network layers.
    1. Application
    2. Network
    3. Transport
    4. Data Link
    5. Physical
  2. (1 point) Briefly describe two methods of channel sharing (multiplexing).
  3. (1 point) What do conectionless communication and connection-oriented communication mean?
  4. (1 point) What kind of addresses are used in the following layers?
    1. Transport
    2. Network
    3. Data Link
  5. (1 point) A local area network is interconnected with a hub. What is its physical topology? What is its logical topology?

Give the following some thought but you need not turn them in.

  1. What is a modem?
  2. List 3 types of analog modulation.
  3. What do simplex, half-duplex, and full-duplex mean?
  4. What do hubs do in a local area network? In which network layer do they operate?
  5. How do hubs, bridges, and routers differ?
  6. What do bridges and switches do in a local area network? In which network layer do they operate?
  7. What are two reasons for not using hubs in local area networks?
  8. What is the difference between shared and point-to-point communication links?