THE FOLLOWING ICND1 EXAM TOPICS ARE COVERED IN THIS CHAPTER:

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√Operation of IP Data Networks

• Recognize the purpose and functions of various network devices such as Routers,Switches,Bridges and Hubs.

• Select the components required to meet a given network specification

• Identify common applications and their impact on the network

• Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models.

    Welcome to the exciting world of internetworking.This first chapter will serve as an internetworking review by focusing on how to connect networks together using Cisco routers and switches,and I've wirtten it with the assumption that you have some simple basic networking knowledge.The emphasis of this review will be on the Cisco CCENT and/or CCNA Routing and Switching(CCNA R/S) objectives you'll need a solid grasp on in order to succeed in getting your ceritifications.

    Let's start by defining exactly what an interneworks is: You create an internetwork when you connect two or more networks via a router and configure a logical network addressing scheme with a protocol such as IP or IPv6.

    We'll also dessect the Open Systems Interconnection (OSI) model,and I'll describe each part of it to you in detail because you really need complete,reliable knowledge of it.Understanding the OSI mode is key for the solid foundation you'll need to build upon with the more advanced Cisco model is key for the solid foundation you'll need to build upon with the more advanced Cisco networking knowledge gained as you become increasingly skilled.

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