Connecting Networks v6 Companion Guide [Hardcover]

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Introduction xix

Chapter 1WAN Concepts 1

Objectives 1

Key Terms 1

Introduction (1.0) 3

WAN Technologies Overview (1.1) 3

    Purpose of WANs (1.1.1) 3

        Why a WAN? (1.1.1.1) 3

        Are WANs Necessary? (1.1.1.2) 4

        WAN Topologies (1.1.1.3) 5

        Evolving Networks (1.1.1.4) 8

        Small Office (1.1.1.5) 8

        Campus Network (1.1.1.6) 9

        Branch Networks (1.1.1.7) 10

        Distributed Network (1.1.1.8) 11

    WAN Operations (1.1.2) 13

        WANs in the OSI Model (1.1.2.1) 13

        Common WAN Terminology (1.1.2.2) 14

        WAN Devices (1.1.2.3) 16

        Cilӥ