The Internetworking Operating System[2] (IOS) is a family of proprietary network operating systems used on several router and network switch models manufactured by Cisco Systems. The system is a package of routing, switching, internetworking, and telecommunications functions integrated into a multitasking operating system. Although the IOS code base includes a cooperative multitasking kernel, most
Early research and development: 1960â4): RAND networking concepts developed 1962â4): ARPA networking ideas 1965): NPL network concepts conceived 1966): Merit Network founded 1967): ARPANET planning begins 1967): Symposium on Operating Systems Principles 1969): NPL followed by the ARPANET carry their first packets 1970): Network Information Center (NIC) 1971): Tymnet switched-circuit network 1972):
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