Chapter 6, Problem P19P

Explanation of Solution

Given:

• Given that the nodes “A” and “B” were on the 10 Mbps channel.
• Propagation delay between both the nodes is 245 bit times.

Given scenario:

Consider the nodes “A” and “B” starts to transmit the Ethernet frame at the same time. As they collides each other, the two nodes choose different values of “K”.

Consider that no nodes are active other than “A” and “B”.

To find:

By the given scenario, find out that the retransmission from the nodes “A” and “B” collides each other or not.

Solution:

Time (t)	Event (E)
At t = 0:	The nodes “A” and “B” starts to transmit the Ethernet frames.
At t = 245:	The nodes “A” and “B” finds out that collision occurs...