Chapter 18

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1.	What is the primary difference between ping and traceroute?
2.	What does the finger command do?
3.	What is the Windows equivalent for the diff command?
4.	What is the difference between the diff command and the cmp command?
5.	What is the difference between the ps command and the top command?
6.	What does the head command do?
7.	What is the loopback address?

Answers

1.	ping tells you if an IP is reachable, traceroute tells you how it was reached.
2.	Provide information about a user account.
3.	comp
4.	The diff command performs a byte-by-byte comparison, the cmp command performs a textual comparison.
5.	The top command provides a great deal more information.
6.	It returns the first several lines of a file.
7.	127.0.0.1; it is a dummy address that points to your NIC and is used for testing the NIC.

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