Data communications | Computer Science homework help

COMP247 Data Communications Assignment 1, 2014 Due: Tuesday 8th April, 2014, 6 pm Value: 15% This assignment is designed to help you develop skills and strengthen your understanding of data communications. Answer the questions as if they are a professional presentation to a client. Thus justify what you say in terms of what will work well for the client. Your submission should be around 5 to 10 pages, but be succinct. Also please print double sided and submit your assignment stapled on the top left. Do not put your submission in a plastic wrapper. Do not include a copy of this assignment specification with your submission.! Question 1 (5 marks) – Network Design Consider the following situation:! ” ! Computer A Router 1 NETWORK 1 Router 2 Computer B NETWORK 2 Router 3 Router 4 Router 5 • An application on computer A (in network 1) is sending a message to an application on computer B (in network 2). ! • There will also be a reply going back the other way.! • TCP is the transport layer protocol used for the messages and IP the network later protocol for the network. ! • Ethernet is the datalink layer protocol for all the connections in the network.! • You can assume that computer A has obtained the destination port and IP address (probably from DNS)! • The above diagram shows the path taken by the messages as determined by the routing information held by the routers, etc.! • Network 1 is a class B network! • Network 2 is a small class C network! • Routers 3, and 5 belong ISPs with class B networks, and router 4 belongs to a toplevel ISP with a class A network.! • Computer A is made by Spike technologies which has a MAC OUI of 45-FE-2A, computer B from Secombe technologies with an OUI of D2-34-C4, the routers are a mix of Trek Technologies with OUI 6B-3C-24 and Kirk Corporation with OUI 7F-9C-37! ! You are to:! 1. Choose all the necessary and suitable MAC address, IP address for interfaces and port addresses implied by the above description. State clearly in your…

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