1. Communication Networks NETW 501 Tutorial 5 : SOLUTION PROBLEM 1
Prepared by: Eng. Minar El-Aasser

2. Assume that Propagation and queuing delays are negligible
Router A
Router B
Router D
Router C Tt 1 1
4.8 ms
4.8 ms 2 2 1 1
4.8 ms
9.6 ms 2 2 1
4.8 ms 1
14.4 ms 2 2 1
Tt(one packet) = 24 ms 1
4.8 ms
19.2 ms 2 2 1 1
4.8 ms
24 ms 2 2
4.8 ms
Tt( Whole packets) = 24 ms + (number of packets -1) x 4.8 ms

3. Assume that Propagation and queuing delays are negligible
Router A
Router B
Router D
Router C Tt 1 1
4.8 ms
4.8 ms 2 2 1 1
9.375 ms ms 2 2 1
2.4 ms 1 ms 1 1
Tt(one packet) = ms
9.375 ms 2 2
25.95 ms 2 2 1 1
4.8 ms
30.75 ms 2 2
4.8 ms
9.375 ms
Tt( Whole packets) = ms + (number of packets -1) x ms

4. Questions?