HW5 - CS 453: Networks Fall 2009 Homework 5 Instructor: V....

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CS 453: Networks Fall 2009 Homework 5 Instructor: V. Arun Assigned: 11/16/09, Due: 11/25/09 Note: Please show as much of your work as you can. Whenever possible, use variable names before plugging in numerical values . Even if you get the answer wrong, you can get partial credit if you show your approach clearly. It will help us tell you where you made a mistake. If you plug in numbers right upfront and your answer is wrong, you will not get partial credit. Problem 1 (Interdomain routing quickies, 32 points): Consider the AS topology in slide 4- 101 (or Figure 4-32 in the textbook). Answer the following questions with an explanation for each. A. Suppose router 3a advertises the route [AS3 AS5 AS7] for the prefix 128.119.240/24 and router 2a advertises the route [AS2 AS9 AS13] for the same prefix. What is the AS level route chosen by router 1d to reach the prefix assuming that AS1 uses RIP for intradomain routing and is a customer of both AS2 and AS3? B.
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HW5 - CS 453: Networks Fall 2009 Homework 5 Instructor: V....

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