Which centralized access control authentication protocol is also an adoptedernet standard?

Which centralized access control authentication protocol is also an adoptedernet standard?

A.
RADIUS

B.
TACACS

C.
SECURID

D.
CRYPTOCARD

Explanation:
Centralized access control administration is very commonly done using the Remotethentication Dial-User Service (RADIUS) protocol. It is a network protocoland provides client/server authentication, authorization, and audit remote users.RADIUS was developed by Livingston Enterprises for its network access server productseries, but was then published as standards. This means it is an open protocol thatany vendor can use and manipulate so it will work within its individual products.Because RADIUS is an open protocol, it can be used in different types ofimplementations. The format of configurations and user credentials can be held inLDAP servers, various databases, or text files.