Which of the following options is for Portal The description of the role of each role in the authentication system is correct?

Which of the following options is for Portal The description of the role of each role in the authentication system is correct?
A . The client is Any 0fice software.
B. Portal The role of the server is to receive client authentication requests, provide free portal services and authentication interfaces, and exchange client authentication information with access devices.
C. RADIUS The role of the server is to authenticate all the users in the network segment HTTP Requests are redirected to Portal server.
D. The role of admission control equipment is to complete the authentication, authorization and accounting of users.

Answer: B