Recall that with the csma/cd protocol, the adapter waits k. 512 bit times after a collision, where k is drawn randomly. a. for first collision, how long does the adapter wait until sensing the channel again for a 1 mbps broadcast channel? for a 10 mbps broadcast channel?

a) 51.2 msec.  b) 5.12 msec

Explanation:

Let

The time that the adapter must wait until sensing a channel after detecting a first collision, is given by the following expressionThe time that the adapter should delay until detecting a channel subsequent to distinguishing a first impact, is given by the following expression:

The bit time, is just the inverse of the channel bandwidth,which is expressed in bits per second, so for the two instances posed by the question, we have:

a)

.

b)

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