Name: _____________________

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			 UNIX System Administration Exam 16 

Notes:
	No circular definitions please.
	Be very specific.
	All terms should be assumed to be in the context of UNIX. 
	Grading:
         	3 free points
         	1 point for each correct answer
        	-1 point for each incorrect, partial, or unintelligible answer
         	0 points for each unanswered question
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Explain how you can determine the route that an e-mail message took.






When you send e-mail to jn@hlw.com, how does your system find the server's IP?






How can you determine detect whether packets are getting dropped by a router?





What does traceroute do and how does it work?







What program can be used to list open TCP connections on a host?





What is tcpdump?  What does it do?  Give an example of when it would be useful.






Can netstat be used to examine the routing table?