Which option lists the correct sequence of IOS modes from user EXEC to line configuration mode?

• A. first mode, second mode, third mode, final mode
• B. interface configuration mode, privileged EXEC mode, line configuration mode, global configuration mode, user EXEC mode
• C. user EXEC mode, privileged EXEC mode, global configuration mode, line configuration mode
• D. interface configuration mode, global configuration mode, privileged EXEC mode, user EXEC mode

Answer: (A)

Understanding Cisco IOS CLI navigation: you start in user EXEC mode with limited commands, then elevate to privileged EXEC mode to access more powerful commands, move into global configuration mode for system-wide settings, and from there enter line configuration mode to configure a specific line (such as console or VTY). So the path from user EXEC to line configuration is: user EXEC → privileged EXEC → global configuration → line configuration. This sequence is the one that places line configuration after global configuration, which is why it’s the correct progression. The other sequences either jump to submodes out of order or try to configure lines without first entering global configuration.