Which task is necessary to encrypt the transfer of data between the ACS server and the AAA-enabled router?
- Specify the single-connection keyword.
- Create a VPN tunnel between the server and the router.
- Configure the key exactly the same way on the server and the router.
- Use identical reserved ports on the server and the router.
Answers Explanation & Hints: The key command is used to configure the shared secret key that is used for encryption. The key must be configured the exact same way on the router and on the ACS server. The creation of a VPN tunnel is unnecessary. Neither the configuration of ports nor the use of the single-connection command has any effect on encryption.