The career path for many IT support techs often leads to the more specialized field of network administration. Along the way, many support pros will obtain a Cisco CCNA certification—a true benchmark among network administrators. To aid those who are currently studying for or considering a CCNA certification, we now offer a download of Chapter 2, “Cisco Internetwork Operating System (IOS) Fundamentals,” from the book Cisco CCNA: Exam #640-507 Certification Guide.

Written by Wendell Odom, a CCIE and Certified Cisco Systems Instructor, this study guide for Cisco’s CCNA Exam #640-507 is part of a recommended study program from Cisco Systems. Odom’s book contains valuable information on the Cisco IOS, OSI reference model, layered communication, bridges/switches, LAN design, routing, WAN protocols, and understanding access list security.

Click here to read Chapter 2, “Cisco Internetwork Operating System (IOS) Fundamentals”—available for download through a special arrangement between TechRepublic and Cisco Press, publishers of technical information resources for computer and engineering professionals. This chapter examines the IOS, its user interface, the configuration process and configuration file, and managing IOS images—essential knowledge for passing the CCNA exam.


Cisco CCNA: Exam #640-507 Certification Guide

By Wendell Odom
Cisco Press

Date published: April 2000
818 pages
ISBN: 0735709718
Price: $49.95 at

Download this chapter |


What’s on your must-read list?

Have you read a good book lately? Tell us about your favorite book and how it has helped you in your career. Post a comment or send us a note.