A wireless network uses a RADIUS server that is connected to an authenticator, which in turn connects to a supplicant.
Which of the following represents the authentication architecture in use?
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A. B. C. D.D.
The authentication architecture described in the question is 802.1x.
802.1x is a protocol used for port-based network access control. It provides an authentication mechanism to devices attempting to connect to a network. In this architecture, the authenticator is a network device, such as a wireless access point, that controls access to the network. The supplicant is a client device, such as a laptop or smartphone, that attempts to connect to the network. The RADIUS server is used to centralize the authentication process, providing a single point of authentication for all network devices.
When a supplicant attempts to connect to the network, the authenticator requests authentication information from the supplicant. The supplicant responds with its credentials, which are then forwarded to the RADIUS server. The RADIUS server verifies the credentials and responds to the authenticator with an acceptance or rejection message. If the authentication is successful, the authenticator allows the supplicant to access the network.
Open systems authentication, also known as unsecured authentication, does not provide any authentication mechanism and is not secure. Captive portal is a web page that requires users to authenticate before accessing the network. RADIUS federation is a mechanism that allows multiple RADIUS servers to share authentication information, but it is not directly related to the architecture described in the question.