User Exec
Allows a person to access only a limited number of basic commands.
Privileged Exec mode
Allows a person to access all device commands, such as those that you use for configuration and management. This level can be password-protected to allow only authorized users to access the device.
Cisco IOS modes:
User Exec
Privileged Exec Mode
Global Configuration
Interface Configuration
User Exec Mode
Switch>
Privileged Exec Mode
Switch#
Global Configuration
Switch(configuration)#
Interface Configuration
Switch(configuration-if)#