RADIUS and TACACS+ work in a client/server model and Diameter works in a peer topeer model. What is the benefit of using this peer to peer model?

A.
Allows for the server to request another credential set from the user

B.
Allows the client to integrate 802.1x port authentication

C.
Allows for the server to provide a universal profile for all users

D.
Allows the user to access resources in several domains without needing toauthenticate.Page 9cess trol-P2.txt

Explanation:
RADIUS and TACACS+ are client/server protocols, which means that the server portioncannot send unsolicited commands to the client portion. The server portion can onlyspeak when spoken to. Diameter is a peer-based protocol that allows either end toinitiate communication. This functionality allows the Diameter server to send amessage to the access server asking for the user to provide another authenticationcredential if attempting to access a secure resource or possibly disconnect the userfor one reason or another.