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The research and education community continues to develop and use advanced networks such as JANET in the United Kingdom and Internet2 in the United States.Increasing amounts of data are transmitted at higher and higher speeds over fiber optic networks operating at 1-Gbit/s, 10-Gbit/s, or more.Packet switching networks such as the NPL network, ARPANET, Tymnet, Merit Network, CYCLADES, and Telenet, were developed in the late 1960s and early 1970s using a variety of communications protocols.The ARPANET project led to the development of protocols for internetworking, in which multiple separate networks could be joined into a network of networks.At the National Physical Laboratory (United Kingdom) in 1965, Davies designed and proposed a national data network based on packet switching.The following year, he described the use of an "Interface computer" to act as a router.In the early 1980s the NSF funded the establishment for national supercomputing centers at several universities, and provided interconnectivity in 1986 with the NSFNET project, which also created network access to the supercomputer sites in the United States from research and education organizations.Commercial Internet service providers (ISPs) began to emerge in the very late 1980s. Limited private connections to parts of the Internet by officially commercial entities emerged in several American cities by late 19, and the NSFNET was decommissioned in 1995, removing the last restrictions on the use of the Internet to carry commercial traffic.

The first message was sent over the ARPANET in 1969 from computer science Professor Leonard Kleinrock's laboratory at University of California, Los Angeles (UCLA) to the second network node at Stanford Research Institute (SRI).Bringing in Larry Roberts from MIT, he initiated a project to build such a network.The first ARPANET link was established between the University of California, Los Angeles (UCLA) and the Stanford Research Institute at hours on October 29, 1969.Licklider's identified need for inter-networking would become obvious by the apparent waste of resources this caused. In the 1960s, Paul Baran of the RAND Corporation produced a study of survivable networks for the U. Larry Roberts applied Davies' concepts of packet switching for the ARPANET wide area network, and sought input from Paul Baran and Leonard Kleinrock.For each of these three terminals, I had three different sets of user commands. Kleinrock subsequently developed the mathematical theory behind the performance of this technology building on his earlier work on queueing theory.

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Robert Taylor was promoted to the head of the information processing office at Defense Advanced Research Projects Agency (DARPA) in June 1966.

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