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High-Speed Networks And Internets: Performance And Quality Of Service
"This book aims at helping to disentangle from an immense mass of material the crucial issues and cardinal decisions. Throughout I have set myself to explain faithfully and to the best of my ability what happened and why.
-The World Crisis, Winston Churchill
High-speed networks now dominate both the wide-area network (WAN) and local area network (LAN) markets. In the WAN market, two related trends have appeared. Public and private data networks have evolved from packet- switching networks in the 10s and 100s of kbps, to frame relay networks oper- ating at up to 2 Mbps, and now to asynchronous transfer mode (ATM) networks operating at 155 Mbps or more. For the Internet and private cor- porate internets. data rates have also soared, with one noteworthy milestone being the construction of a 155-Mbps backbone in 1996.
For many years, the most common LAN was the 10-Mbps shared Ethernet. Then came the switched Ethernet, which offers a dedicated 10 Mbps to each end system. This was followed by Fast Ethernet at 100 Mbps and now Gigabit Ethernet and 10-Gbps Ethernet. Recent years have also seen the introduction of Fibre Channel LANs with speeds up to 3.2 Gbps and wireless LANs with speeds up to 54 Mbps.
This rapid introduction of high-speed networks has spurred the devel- opment of new applications and has in turn been driven by the popularity of those applications. Key driving forces have been the increasing use of still image and video data in applications and the popularity of the World Wide Web."
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