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This chapter describes the Cisco Unified Communications IM and Presence (IM&P) architecture and design.

Sean Wilkins

Concluding this three-part series on WAN technologies, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, Academic Edition, discusses how satellite, wireless data, and leased lines are used as part of a networking solution.

Sean Wilkins

In Part 2 of a three-part series, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, Academic Edition, reviews popular low-end and mid-grade offerings for Internet access: dial-up, ISDN, DSL, and cable.

In this chapter from Navigating Network Complexity: Next-generation routing with SDN, service virtualization, and service chaining, the authors begin by examining some methods proposed to measure network complexity, and then consider ordered versus unordered complexity. Finally, they examine several realms of complexity that will lead to practical applications.

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