Need to Know More?

Black, Uyless D. OSI: A Model for Computer Communications Standards . Prentice Hall Publishing, Indianapolis, IN 1991. ISBN: 0136371337.

Jones, Jim. CCNA Exam Cram 2 . Que Publishing, Indianapolis, IN. ISBN: 0789730197.

Network Basics For Execs, "How This Stuff Works" on Cisco's CCO Web site, http://business.cisco.com/prod/tree.taf%3Fasset_id=103205&MagID=103167&public_view=true&kbns=1.html

How ThisStuffWorks.Com http://computer.howstuffworks.com/osi.htm