Which two statement about the RADIUS service on FortiAuthenticator are true?

 Two statements about the RADIUS service on FortiAuthenticator are true:

RADIUS users can be migrated to LDAP users using the RADIUS learning mode feature. This feature allows FortiAuthenticator to learn user credentials from an existing RADIUS server and store them locally as LDAP users for future authentication requests.

FortiAuthenticator answers only to RADIUS clients that are registered with FortiAuthenticator. A RADIUS client is a device that sends RADIUS authentication or accounting requests to FortiAuthenticator. A RADIUS client must be added and configured on FortiAuthenticator before it can communicate with it.

References: https://docs.fortinet.com/document/fortiauthenticator/6.4.0/administration-guide/906179/radius-service