Which of the following are the important components of the IEEE 802.1X architecture?
Each correct answer represents a complete solution. Choose all that apply.

A.
Authenticator server

B.
Extensible Authentication Protocol (EAP)

C.
Supplicant

D.
Authenticator

Explanation:
The 802.1X standard is designed to enhance the security of wireless local area networks (WLANs) that follow the IEEE 802.11 standards. IEEE 802.1X provides an authentication framework for wireless LANs, allowing a user to be authenticated by a central authority. In the 802.1X architecture, there are three important components:

1.Supplicant: A user or client (known as the supplicant) who wants to be authenticated.
2.Authenticator server: The authentication server may use the Remote Authentication Dial-In User Service (RADIUS). Remote Authentication Dial-In User Service (RADIUS) is a client/server protocol and software that enables remote access servers to communicate with a central server to authenticate dial-in users and authorize their access to the requested system or service. RADIUS allows a company to maintain user profiles in a central database that all remote servers can share.
It provides better security, allowing a company to set up a policy that can be applied at a single administered network point.
3.Authenticator: The authenticator is the network device such as wireless access point. The authenticator acts like a security guard to a protected network.

Answer option B is incorrect. Extensible Authentication Protocol, or EAP, is an authentication framework frequently used in wireless networks and Point-to-Point connections. EAP is not a wire protocol; instead it only defines message formats. Each protocol that uses EAP defines a way to encapsulate EAP messages within that protocol’s messages.