Chapter 5 of CCNA Intro Exam Certification Guide by Wendell Odom describes the core concepts behind OSI Layer 3. Because CCNA focuses on TCP/IP, you also will learn about the main Layer 3 protocol used by TCP/IP -- namely, the Internet Protocol (IP). Coverage includes IP addressing, IP routing and some protocols useful to IP's effort to deliver packets end-to-end through a network.
Excerpted from CCNA Intro Exam Certification Guide by Wendell Odom (ISBN: 1587200945). Copyright 2004, Cisco Systems, Inc. Reproduced by permission of Pearson Education, Inc., 800 East 96th Street, Indianapolis, IN 46240. Written permission from Pearson Education, Inc. is required for all other uses.
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