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The Cisco IOS commands allow the user to enter partial Cisco IOS commands. If you start to type in a command it can recognize it and finish the command for you.
Divide and conquer
Cisco IOS uses a command line interface (CLI) for inputting commands when configuring Cisco Routers
Cisco IOS uses a command line interface (CLI) for inputting commands when configuring Cisco Routers
It is the operating system that runs on the Cisco switch or router that manages all the functions of the device.
Cisco IOS (originally Internetwork Operating System) is the software used on the vast majority of Cisco Systems routers and current Cisco network switches. (Earlier switches ran CatOS.) IOS is a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system.
show flash
The question mark. It can be used in different contexts, for example: ? (list all commands that make sense in the current context) s? (list all commands that start with s) show ? (list what options you have as the second word after the SHOW command, for example, show ip, show running-config, etc.)
The Flash memory stores the Cisco IOS image.
Depending on the IOS on the switch it will have either layer 3 functionality (EMI) or just layer 2 functionality (SMI).
No. Apple's iOS uses the Mach / XNU kernel, the same as macOS. Cisco's IOS and the "IOS" used on the Nintendo Wii are proprietary operating systems developed by Cisco and Nintendo internally.
Reinstall the IOS image. Recover a lost password