Question: given the network diagram below answer the following questions assume...
Given the network diagram below, answer the following questions. Assume that the transmission delay for HTTP GET/RESPONSE and DNS REQUEST/RESPONSE messages is so small that it can be ignored. Transmission delays are only calculated when sending the data file. Both routers, R1 and R2, use store and-forward. The transmission delays on the LANs must be calculated, but propagation delays are ignored. The round-trip time from any machine in a.com to b.com is 50 ms. The round-trip time from any machine in a.com to the Internet is 100 ms.
Give the sequence and timing of messages sent when m1.a.com requests a 1 Mbit file from www.b.com. Assume the DNS record and the HTTP file are not cached locally. Also assume that the top-level domain is not cached.