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CCIE Fundamentals: Network Design and Case Studies, Second Edition by Cisco Systems, Inc.

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Chapter 1. Introduction

Edited by Atif Khan

Networking—the communication between two or more networks—encompasses every aspect of connecting computers together. Networks have grown to support vastly disparate end-system communication requirements. A network requires many protocols and features to permit scalability and manageability without constant manual intervention. Large networks can consist of the following three distinct components:

  • Campus networks, which consist of locally connected users in a building or group of buildings

  • Wide-area networks (WANs), which connect campuses

  • Remote connections, which link branch offices and single users (mobile users and telecommuters) to a local campus or the Internet

Figure 1-1 provides an example of a typical ...

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