Question 1 of 30
In a corporate environment, a network administrator is tasked with implementing 802.1X authentication to enhance network security. The administrator decides to use a RADIUS server for authentication and configure the network switches to support this protocol. During the setup, the administrator encounters a scenario where a user attempts to connect to the network but fails to authenticate. The administrator checks the RADIUS server logs and finds that the user’s credentials were rejected due to a misconfiguration. Which of the following factors is most likely to have caused the authentication failure?
The RADIUS server is not configured to accept requests from the switch's IP address.
The user’s device does not support EAP (Extensible Authentication Protocol).
The switch is not set to use VLAN tagging for the authentication process.
The RADIUS server is using an outdated encryption method that the user’s device cannot support.

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