computer network homework

SHORT ANSWERS: 1- why is ethernet inappropriate for use in a WAN? 2- Would you expect queueing delays, acees delays, and propagation delays to be longer on LAN or on WAN. explain 3- Professionals sometimes refer to a "knee" in the delay curve. To understand what they mean, plot the effective delay for values of utilization between 0 and 0.95. Can you find a value of utilization for which the curve appears to increase sharply? 4- Howmuch data can be present on an original Ethernet segment at one time? to find out, compute the delay-throughtput product. The original Ethernet operate at 10 mega-bits per second, and a segment was limited to 500 meters. Assume the signals propagate down the cable at 66% of the speed of light. 5- Howmuch data can be "in flight" between a sending ground station, a satellite, and a receiving station? to find out, compute the delay-throughtput product for a satellite network that operates at 3 megabits per second. Assume that the satellite orbits 20,000 miles above the earth, and that radio transmissions progarate at the speed of light. 6- download and use the ttcp program to test throughput on your local network (explain how you can do that). ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform computer networks