October 20 - Internet in the 80s 1983 First IBM personal...

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Internet in the 80’s * 1983: First IBM personal computers sold * 1984: Domain Name System (DNS) introduced on ARPANET * 1986: Internet Engineering Task Force (IETF) created - To coordinate contractors for DARPA - Coordinated work on ARPANET, US Defense Data Network (DDN), and the Internet core gateway system * 1989: Number of hosts breaks 100,000 Domain Name Service (DNS) * A distributed database system - Translates domain names into IP addresses and vice versa - www.example.com might translate to 198.105.232.4 * DNS is a hierarchy of databases - If one DNS server doesn’t know how to translate a particular domain name, it asks another (higher-level) one, recursively until the IP address association has been returned Naming and Numbering * Early 1970’s naming system consisted on one file, names hosts.txt, maintained by SRI pursuant to a DoD contract. In 1977 John Postel quickly proposed gTLD’s. In his spare time he wrote SMTP. * By 1988, USG made contract with Postel’s USC ISI giving him authority to run the naming and numbering – he was the naming and numbering authority.
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