Name: _____________________

                                                 id#: _____________________


			 UNIX System Administration Exam 19 

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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What is the security risk posed by setuid programs?





How does a proxy firewall increase the security of the protected network?





How would you determine whether a server needs a faster CPU or more memory?





How would you determine whether a server needs more memory or faster disks?





What is the difference between ps and top?





What does iostat tell you?





What does vmstat tell you?