computer networks lesson 1 to 4

• The idea of ARPANET, one of the earliest computer networks, was proposed by Leonard Kleinrock in 1961, in his paper titled "Information Flow in Large Communication Nets."


  1961
• The term "packet" was coined by Donald Davies in 1965, to describe data sent between computers over a network.


  1965
• Development of ARPANET started


  1966
• ARPANET was one of the first computer networks to use packet switching. The first two nodes, UCLA and SRI (Standford Research Institute), were connected, officially starting ARPANET in 1969.

  1969
• The first Request for Comment (RFC) surfaced, as a document to define and provide information about computer communications, network protocols, and procedures.

  April 1969
• The first network switch and Interface Message Processor (IMP) was sent to the University of California, Los Angeles (UCLA). It was used to send the first data transmission on ARPANET.


  August 29, 1969
• The Internet was officially born, with the first data transmission being sent between UCLA and Science Research Initiative (SRI) at 10:30 p.m.


  October 29, 1969
• Steve Crocker and a team at UCLA released NCP (NetWare Core Protocol)


  1970
• NCP


  A file sharing protocol for use with NetWare
• Ray Tomlinson sent the first e-mail


  1971
• ALOHAnet, an Ultra High Frequency (UHF) wireless packet network, is used in Hawaii to connect the islands together


  1971
• Although ALOHAnet is not Wi-Fi, it helps lay the foundation for Wi-Fi
• Ethernet is developed by Robert Metcalfe at Xerox PARC


  1973
• The first international network connection, called SATNET, is deployed by ARPA


  1973
• An experimental VoIP call was made, officially introducing VoIP technology and capabilities

  1973
• The first software allowing users to make VoIP calls was not available until 1995
• The first routers were used at Xerox


  1974
• These first routers were not considered true IP routers
• Ginny Strazisar developed the first true IP router, originally called a gateway


  1976
• Bob Kahn invented the TCP/IP protocol for networks and developed it, with help from Vint Cerf


  1978
• Internet Protocol version 4, or IPv4, was officially defined in RFC 791


  1981
• IPv4 was the first major version of the Internet protocol
• BITNET was created as a network between IBM mainframe systems in the United States


  1981
• CSNET (Computer Science Network) was developed by the U.S. National Science Foundation


  1981
• ARPANET finished the transition to using TCP/IP


  1983
• Paul Mockapetris and Jon Postel implemented the first DNS


  1983
• The NSFNET (National Science Foundation Network) came online

  1986
• NSFNET was a backbone for ARPANET, before eventually replacing ARPANET in the early 1990s
• BITNET II was created to address bandwidth issues with the original BITNET


  1986
• The first T1 backbone was added to ARPANET


  1988
• WaveLAN network technology, the official precursor to Wi-Fi, was introduced to the market by AT&T, Lucent, and NCR


  1988
• Details about network firewall technology were first published, discussing the first firewall, called a packet filter firewall, that was developed by Digital Equipment Corporation


  1988
• Kalpana, a U.S. network hardware company, developed and introduced the first network switch


  1990
• IPv6 was introduced as an improvement over IPv4, including a wider range of IP addresses, improved routing, and embedded encryption


  1996
• The first version of the 802.11 standard for Wi-Fi is introduced, providing transmission speeds up to 2 Mbps


  1997
• The 802.11a standard for Wi-Fi was made official, designed to use the 5 GHz band and provide transmission speeds up to 25 Mbps


  1999
• 802.11b devices were available to the public, providing transmission speeds up to 11 Mbps


  1999
• The Wireless Equivalent Privacy (WEP) encryption protocol for Wi-Fi is introduced


  1999