Exam MTCNA Topic 2 Question 168 Discussion

The command line cons 0 enters the console line configuration mode. This is used to apply settings specific to the physical console line, such as setting a login password (via password and login commands).
Cisco IOS Configuration Guide - Line Console Mode:
"Use line console 0 to configure settings for the console line, including timeouts, password security, and logging behavior." Rene Meneses Study Guide - Device Access:
"Console access configuration begins with line console 0. It is followed by login and password commands." Other options:
* A: Telnet is configured under line vty, not console
* B: Router shutdown is done with reload or shutdown commands (not here)
* D: Console cannot be disabled from line cons 0