Which new security enhancement is introduced by deploying a next-generation firewall at the data center in addition to the Internet edge?

What are two methods of ensuring that the multicast RPF check passes without changing the unicast routing table? (Choose two.)

Which data is properly formatted with JSON?

Refer to the exhibit. Authentication for users must first use RADIUS, and fall back to the local database on the router if the RADIUS server is unavailable Which two configuration sets are needed to achieve this result?
(Choose two.)