CS615A - Aspects of System Administration
Quiz #4


FULL NAME                       ______________________________________



USERNAME			______________________________________


1) Visiting each of the domains domains "www.cs615.edu", "www.asa.edu" and
   "www.cs615asa.edu" with a browser gives a different website.  Doing a
   hostname lookup on each domain yields:

www.cs615.edu is an alias for www.asa.edu
www.asa.edu is an alias for www.cs615asa.edu
www.cs615asa.edu has address 1.2.3.4
www.cs615asa.edu has IPv6 address 2001:4f8:36:af4:1e8:81e0:2e32:82ac

   Explain what this means for the web servers configuration.



















2) Using the telnet command, make an HTTP request to retrieve the URL
   "http://www.asa.edu/documents/syllabus.txt" from the webserver above.
















3) In the context of SSH, explain the difference between password
   authentication and public-key authentication.

















4) List the three different times the /usr/bin/time reports and

   (a) explain what each means

   (b) explain where the "missing" time went















5) List the three areas in which encryption can provide security.