1. User exec mode
2. Privileged exec mode
3. Global configuration mode
4. ROM monitor mode
5. Set up mode
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.
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
Divide and conquer
show?
show interface status
config tftp run
debug all
show ip eigrp neighborsw
flash, NVRAM, TFTP server
Router(config-if)#no frame-relay lmi-type cisco
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.)