The computer file hosts is an operating system file that maps hostnames to IP addresses. It is a plain text file. TXT was manually maintained and made available via file sharing by Stanford Research Institute for the ARPANET membership, containing the hostnames and address of hosts as contributed for inclusion by member organizations. The Domain Name System , first described in and implemented in ,  automated the publication process and provided instantaneous and dynamic hostname resolution in the rapidly growing network.
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The earliest ideas of a computer network intended to allow general communication between users of various computers were formulated by J. These ideas contained almost everything that the internet is today. He then convinced Bob Taylor that this was a very important concept. ARPA and Taylor continued to be interested n creating a computer communication network, in part to allow ARPA — Sponsored researches in various locations to use in part to quickly make new software and other results widely available.
Designed as a computer version of the nuclear bomb shelter, ARPANET protected the flow of information between military installations by creating a network of geographically separated computers that could exchange information via newly developed protocols called NCP Network Control Protocol. As the network expanded different models of computer were connected, creating compatibility problems.
Under ARPANET several major innovations occurred: email to send simple messages to another person across the network, telnet a remote connection service for controlling a computer, and file transfer protocol FTP , which allows information to be sent from one computer to another in bulk.
Connection of different Networks by Gateways. Search this site. Navigation Home. Road map of internet browsers. Road map of web development programming language. Road map of internet events.