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.
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Bill Detwiler has nothing to disclose. He doesn't hold investments in the technology companies he covers.
Bill Detwiler is Managing Editor of TechRepublic and Tech Pro Research and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the social research and energy industries. He has bachelor's and master's degrees from the University of Louisville, where he has also lectured on computer crime and crime prevention.