ios navigation
sing the CLI may provide the network administrator with more precise control and flexibility than using the GUI. This topic discusses using CLI to navigate the Cisco IOS.
User EXEC Mode(view-only mode)
This mode has limited capabilities but is useful for basic operations. It allows only a limited number of basic monitoring commands but does not allow the execution of any commands that might change the configuration of the device. The user EXEC mode is identified by the CLI prompt that ends with the > symbol.
Privileged EXEC Mode (enable mode)
Global Config Mode
allows users to modify the running system configuration.