Which switch configuration enforces password-only authentication for all remote protocols and disconnects idle sessions after 30 minutes?

The correct configuration uses line vty 0 15 to apply settings to all Virtual Teletype (VTY) lines, which handle remote access. password cisco sets a password for authentication. transport input telnet ssh specifies that only Telnet and SSH are allowed for remote access, enforcing protocol-specific authentication. exec-timeout 30 0 sets the idle timeout to 30 minutes (30 minutes, 0 seconds). The second option incorrectly uses exec-timeout 0 30, which means 0 minutes and 30 seconds. The third option uses login local, which requires a local username database, not just a password. It also has the incorrect exec-timeout 0 30. The fourth option configures the console line, not VTY lines for remote access.