In this chapter, you learned about remote connectivity network design with a focus on the following topics:

■ Definition of a WAN and the types of WAN interconnections

■ Various WAN technologies, including TDM, ISDN, Frame Relay, ATM, MPLS, Metro Ethernet, DSL, cable, wireless, SONET/SDH, DWDM, and dark fiber

■ WAN pricing and contract considerations

■ WAN design methodology, including the application and technical requirement aspects of WAN design

■ WAN bandwidth optimization techniques

■ Use of various WAN technologies for remote access, VPNs, WAN backup, and connecting to the Internet as a backup WAN

■ Enterprise Edge WAN and MAN architectures and technologies

■ Selection of WAN components, including hardware and software

■ Enterprise Branch and Enterprise Teleworker design considerations

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