Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)

1. "enable secret password": This command is used to set up a secure encrypted password that is used to access privileged EXEC mode. This password is encrypted and provides more security than the unencrypted password created with the "enable password" command.

2. "line console 0": This command is used to enter line configuration mode for the console port. The number 0 represents the first line (console port) on the router.

3. "login": This command is used in line configuration mode to enable password checking at login. After this command is issued, you will be prompted for a password when you attempt to connect to the console port.

4. "password password": This command is used in line configuration mode to set the password for the console port. Replace "password" with the actual password you want to use.

5. "service password-encryption": This command is used to encrypt all plaintext passwords in the configuration file. This provides a basic level of security for passwords, which would otherwise be visible in plain text in the configuration file.

6. "exit": This command is used to exit the current configuration mode and return to the previous mode. For example, if you are in line configuration mode, issuing the "exit" command will return you to global configuration mode.

Please note that the exact commands may vary slightly depending on the specific router model and the version of the router's operating system.