10.2 The Command Structure

Answer 1

A Cisco IOS device supports many commands. Each IOS command has a specific format, or syntax, and can only be executed in the appropriate mode.
The general syntax for a command, is the command followed by any appropriate keywords and arguments.

Keyword - This is a specific parameter defined in the operating system.
Argument - This is not predefined; it is a value or variable defined by the user.

After entering each complete command, including any keywords and arguments, press the Enter key to submit the command to the command interpreter.

Question 2

IOS Command Syntax

Answer 2

A command might require one or more arguments.
To determine the keywords and arguments required for a command, refer to the command syntax.
The syntax provides the pattern, or format, that must be used when entering a command.

Question 3

Hotkeys and Shortcuts

Answer 3

Commands and keywords can be shortened to the minimum number of characters that identify a unique selection.

Question 4

Show Commands

Answer 4

The Cisco IOS provides commands to verify the operation of router and switch interfaces.

The Cisco IOS CLI show commands display relevant information about the configuration and operation of the device.