Systems and Networks Assume host A sends a 1MB file to host

(Systems and Networks)

Assume host A sends a 1MB file to host B though a network. The path from host A to host B has three links of rates R1 = 600 kbps, R2 = 0.7 Mbps, and R3 = 1.3 Mbps.

How long will it take to transfer the file to host B? Don\'t take into consideration the transmission delays at each router, the need for Acknowledgments to be returned, or traffic conditions on the network.

Give answer in seconds and round to the 2. digit after the decimal point.

Solution

Speed of transmition depends on slowest link in the path which is R1 here

So final rate would be 600kbps

Total size to be sent = 1MB = 1024 KB = 1024*1024*8 b

Speed = 600*1000 bps

Time = (1024*1024*8)/(600*1000) = 13.9810 seconds. = 13.98 seconds