which means what?

RADIUS is considered an open protocol, which means what?

RADIUS is considered an open protocol, which means what?

A.
RADIUS is now a standard that is outlined in RFC 2138 and RFC 2139. Any vendor can follow these standards and develop the protocol to work within their product.

B.
RADIUS is open-source, which means that any vendor can contact Cisco and receivethe code for free.

C.
RADIUS is not an open protocol, but a de facto standard.

D.
RADIUS is a proprietary protocol, but open to any vendor who pays the fee to useit.

Explanation:
RADIUS is a standard and is described in RFC 2138 and RFC 2139. Any vendor who wantsto develop and deploy RADIUS can just follow these standards. RADIUS is notproprietary (meaning owned by a specific company) and an open protocol.



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