Cisco CCNA (200-301)Network FundamentalsEasy
A network engineer is configuring a new Cisco router. After connecting to the console, the engineer attempts to configure a static route but finds that certain commands are not recognized. Which command should the engineer use to enter the appropriate configuration mode?
- Aline console 0
- Bconfigure terminal
- Cinterface GigabitEthernet0/0
- Denable
Show answer & explanationAnswer & explanation
Correct answer: B. configure terminal
To configure a static route on a Cisco router, the engineer needs to be in global configuration mode. The 'configure terminal' command is used to enter this mode from privileged EXEC mode.
Why the other options are wrong
- A. The 'line console 0' command is used to configure console line settings, not global router settings like static routes.
- C. The 'interface GigabitEthernet0/0' command is used to enter interface configuration mode, which is for configuring specific network interfaces, not global static routes.
- D. The 'enable' command transitions the user from user EXEC mode to privileged EXEC mode, which is a necessary step before entering global configuration, but not the command for configuration itself.
Cisco IOS Configuration Modes
Cisco IOS devices use a hierarchical command-line interface (CLI) with different operational modes, each allowing specific sets of commands.
- User EXEC mode (Router>): Limited monitoring commands.
- Privileged EXEC mode (Router#): Full monitoring, debugging, and file management commands.
- Global Configuration mode (Router(config)#): For configuring global parameters like static routes, hostnames, etc.
Memory trick: User finds the Key to unlock Global settings, then specific Interface controls.