In the admission control scenario of the Agile Controller, which of the following options about the roles of the RAD IUS server and client is correct?

In the admission control scenario of the Agile Controller, which of the following options about the roles of the RAD IUS server and client is correct?
A . The Agile Controller integrates all the functions of the RADIUS server and client.
B . The Agile Controller acts as a RADIUS server, and the user terminal acts as a RADIUS client.
C . The authentication device (such as an 802.1X switch) acts as a RADIUS server, and the user terminal acts as a RADIUS client.
D . The Agile Controller acts as a RADIUS server and an authentication device (such as an 802.1X switch) as a RADIUS client.

Answer: D