Chapter 14. Network Architecture Introduction

The following topics are covered in this chapter:

  • Network Devices

  • Hierarchical Network Model

  • WAN Oversubscription

Networks can be broken down into four categories, depending on the geographic relation of the network components. These four network categories are as follows:

  • Wide Area Network (WAN)—. WANs use interconnections that span geographically separate networks. Figure 14-1 illustrates a WAN.

    Figure 14-1. WAN

    Figure 14-1. Figure 14-1. WAN

  • Campus Area Network (CAN)—. CANs interconnect local area networks (LANs) within a limited geographical space, such as a school campus or a military base. CANs are illustrated in Figure ...

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