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Internetworking Operating System - which is similar to Windoes or MAC OS in a Computer,
IOS has Many verson from Desktop Switches/Routers and to Large Scale Enterprice Swtiches and Routers and Security Devices such as Firewalls. From the version to version Functionalities and Capabiliteis varies.
its a cisco propritry and its a internetwork operating system . bydefault it comes from the cisco router .
we can make a backup of runing config or backup of startup config from rom .
Cisco Internetwork Operating System (Cisco IOS) is a software used on Cisco routers and switches. It contains the instruction sets needed to configure, maintain, and run a Cisco routers and switches successfully.
