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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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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:
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)