CompTIA Security+ Exam Prep

Answer: B - The RADIUS protocol combines the authentication and authorization functionality. It stands for Remote Authentication Dial-In User Service. It is a network protocol and provides client/server authentication and authorization and audits remote users. The access server requests the remote user’s logon credentials and passes them back to a RADIUS server, which houses the user-names and password values. The remote user is a client to the access server and the access server is a client to the RADIUS server.