Refer to the exhibit. An engineer booted a new switch and applied this configuration via the console port. Which additional configuration must be applied to allow administrators to authenticate direct

This command creates a username but lacks a password and does not specify a privilege level, preventing authentication and direct access to privilege mode.

This command creates a local username 'admin', assigns it the highest privilege level (15), which grants full access to enable mode, and sets a secure encrypted password 'p@ss1234' for authentication. This specific privilege level allows direct entry to enable mode after login.

This command creates a username with a password but defaults to privilege level 1, which would not grant direct access to enable privilege mode without an additional `enable secret` or `enable password` configured for privilege 15.

This command is incomplete as it creates a username without a password and omits the privilege level specification necessary for direct enable mode access.