Refer to the exhibit. Which two commands must be added to update the configuration of router R1 so that it accepts only encrypted connections? (Choose two)

Creating a local username is for authentication, not directly for enabling or enforcing the encryption of remote connections.

`ip ssh version 2` specifies which version of SSH to use but does not enable SSH or enforce encrypted connections itself.

`line vty 0 4` is a command to enter the virtual terminal line configuration mode, not a command that enables or enforces encrypted connections.

The `crypto key generate rsa 1024` command creates the RSA key pair necessary for encrypting SSH communication, which is fundamental for secure connections.

The `transport input ssh` command, applied to the VTY lines, ensures that only SSH connections are accepted, thereby enforcing encrypted remote access and disallowing unencrypted protocols like Telnet.