CCNA Cisco Certified Network Associate Routing and Switching Study Guide (Exams 200-120, ICND1, & ICND2), with Boson NetSim Limited Edition, 5th Edition

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2 OSI Reference Model

CERTIFICATION OBJECTIVES

2.01 Introduction to the OSI Reference Model

2.02 Layers of the OSI Reference Model

2.03 Encapsulation and De-encapsulation

Two-Minute Drill

Q&A Self Test

Before you can successfully configure Cisco switches and routers, you must understand some basic networking concepts outlined in this chapter and advanced concepts discussed in later chapters. The Open Systems Interconnection (OSI) Reference Model is the best place to start, since it will help you understand how information is transferred ...

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