An administrator adds a new network device to the Cisco ISE configuration to authenticate endpoints to the network. The RADIUS test fails after the administrato...

An administrator adds a new network device to the Cisco ISE configuration to authenticate endpoints to the network. The RADIUS test fails after the administrator configures all of the settings in Cisco ISE and adds the proper configurations to the switch.
What is the issue?

A. The endpoint profile is showing as ''unknown" B. The endpoint does not have the appropriate credentials for network access C. The certificate on the switch is self-signed, not a CA-provided certificate D. The shared secret is incorrect on the switch or on Cisco ISE