CECS 474 Computer Network Interoperability Assignment 5: Wireless Networks - Prof. Tracy M, Assignments of Computer Science

An assignment for a computer network interoperability course, focusing on 802.11 wireless networks. Students are required to form teams, list their computers, and answer questions related to mac addresses, csma/cd vs csma/ca, ad-hoc and infrastructure wireless lans, and transfer rates. Experiments and research are encouraged. Due march 23, 2009.

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Pre 2010

Uploaded on 08/18/2009

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CECS 474 Computer Network Interoperability
Assignment 5
Due Monday, March 23, 2009 (by the end of lab)
802.11 Wireless Networks – Part A
I. Preliminaries
Choose a team of 4-5 people with whom you will work on this assignment. (Please balance
the number of people on your teams.) List the members of your team:
_______________________________ ________________________________
_______________________________ ________________________________
_______________________________
What computers are your team using? ___________________________________
II. Instructions
As a team, answer the questions in Section III concerning wireless networks.
To answer the questions you may use:
1) the wireless NIC and access point documentation,
2) the World Wide Web, and
3) the equipment available in our lab to perform experiments to answer the questions,
whenever possible.
Your answers should discuss the experiments you have performed and information you have
gathered.
1) Be sure to cite your references.
2) Do not simply quote answers from the wireless NIC documentation, explain what the
answer means.
3) You should use the time in lab to experiment with wireless networks and research their
behavior.
Turn in only one copy of this assignment for your entire group.
Dr. Tracy Bradley Maples (Spring 2009)
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CECS 474 Computer Network Interoperability

Assignment 5

Due Monday, March 23, 2009 (by the end of lab)

802.11 Wireless Networks – Part A

I. Preliminaries  Choose a team of 4-5 people with whom you will work on this assignment. (Please balance the number of people on your teams.) List the members of your team:




 What computers are your team using? ___________________________________ II. Instructions  As a team, answer the questions in Section III concerning wireless networks.  To answer the questions you may use:

  1. the wireless NIC and access point documentation,
  2. the World Wide Web, and
  3. the equipment available in our lab to perform experiments to answer the questions, whenever possible.  Your answers should discuss the experiments you have performed and information you have gathered.
  4. Be sure to cite your references.
  5. Do not simply quote answers from the wireless NIC documentation, explain what the answer means.
  6. You should use the time in lab to experiment with wireless networks and research their behavior.  Turn in only one copy of this assignment for your entire group. Dr. Tracy Bradley Maples (Spring 2009)

Answer the Following Questions

1. What is the MAC address of the the wireless 802.11g NICs you are using? Is this a static or configurable address? 2. What is the major difference between CSMA/CD and CSMA/CA? Why was it necessary to modify the traditional CSMA/CD protocol for use in wireless networks? Explain. 3. What is an ad-hoc wireless LAN? Get one working in our lab. How did you configure it? Describe the topology, data paths, computers used and transmission rates of your network. 4. What is an infrastructure wireless LAN? Get one working in our lab using our 802.11g Router. How did you configure it? Describe the topology, data paths, computers used and transmission rates of your network. 5. What is the transfer rate of a 802.11g CSMA/CA wireless network? Where did you get this information? Is it the theoretical or actual rate? How does the theoretical transfer rate compare with the actual transfer rate you can measure in lab? Measure and report on this. 6. In our lab, pick one of the many methods for setting up two separate wireless LANs in the same physical space. Describe your approach and explain how well it worked. 7. Is there a limit to the number of stations that can be attached to a wireless LAN? (You may want to look this one up on a manufacturers website.) Dr. Tracy Bradley Maples (Spring 2009)