Homework 1 solutions. Question 1 Solution Q1 Question 2.

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Presentation transcript:

Homework 1 solutions

Question 1

Solution Q1

Question 2

Solution Q2 a: The destination link (i.e., the link connecting the clients to the Internet) is the bottleneck link and the throughput for each source-destination pair is 54 Mbps. b: The destination link (i.e., the link connecting the clients to the Internet) is the bottleneck link and the throughput for each source-destination pair is 1Mbps. c: The destination and source links are now 100 Mbps. The capacity of the common link is shared between all users, so each user receives 0.75 Gbps/10 = 750 Mbps/10 = 75 Mbps from the shared link. Hence the bottleneck link is the shared link and the throughput for each source- destination pair is 75Mbps. d: The throughput for S1 and D1 is 1 Mbps. The throughput for all the other source-destination pairs is 54 Mbps. The bottleneck links are the source link for S1 (i.e., the link connecting S1 to the Internet) for the connection between S1 and D1 and the destination links (i.e., the link connecting the clients to the Internet) for the other source-destination pairs.