January 2021
Beginner
565 pages
19h 27m
English
Content preview from Fundamentals of Communications and Networking, 3rd Edition
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CHAPTER SUMMARY
This chapter presented the evolution of WAN technologies from analog communication to digital communications from the 1970s to present. This evolution led to circuit-switching and packet-switching technologies. This was followed by MPLS, Metro Ethernet, and high-speed SONET-based fiber optic backbone connections. As the evolution of broadband emerged, so did alternative high-speed WAN connectivity options for SOHO, SMB, and enterprise organizations.
There are various WAN technologies available at the Physical, Data Link, and Network Layers. You examined the differences between point-to-point, circuit-switching, and packet-switching WAN technologies, including X.25, frame relay, and ATM. WAN technologies eventually migrated ...