CS 457 - Fall 2008

Homework 1

Date assigned: Sept 11, 2008
Date due: Sept 18, 2007 in class (you may also email your answer before class)
Submission tag: HW1

Problem 1 (20pts): Exercise 5 (p.55)
Problem 2 (20pts): Exercise 13 (p.56)
Problem 3 (20pts): Exercise 24 (p. 59)
Problem 4 (20pts): Exercise 32 (p.61)
Problem 5 (20pts): Read the Linux manual page for traceroute. You don't need to understand all the options, but make sure you understand what it does. Visit the traceroute tools at www.traceroute.org and trace the path from three sites to www.colostate.edu. Pick places geographically as follows: one on the east coast, one on the west coast and one as close as possible to CSU (but different city). Look at the results of each run. Try to classify hops as local, access and backbone (where local means within an institution, access means between ISPs and backbone means within a Tier 1 provider). You may use both hop latency and the DNS name to make your determination. Justify your answer. Turn in results for all three paths.

Note: All homework assignments are individual assignments. Please do your own work.