# Answered! Three stations A, B and C are attached to a common cable as shown….

Three stations A, B and C are attached to a common cable as shown.

The stations are using CSMA/CD. Propagation times (one way) are shown.

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Answered! Three stations A, B and C are attached to a common cable as shown….
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1. a) Draw a space-time diagram with time down vertically, and use it to answer the remaining parts.
2. b) If A begins transmission at time t, what is the range of times that C might start sending so as to cause a collision? Show the explanation with the aid of the space-time diagram.
3. c) If C began to send just before the latest point causing collision in the range found in b), what is the largest duration of a frame that A could send to B such that it would all be received without a collision?
4. d) If A and C are at the extremes of the network and the minimum frame duration was chosen so a collision anywhere would result in a collision everywhere, what must this minimum frame size be?