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Difficulty: EasyWireless Security and Authentication

Match each enterprise wireless security role to its correct function within an 802.1X network infrastructure.

  • SupplicantClient software or endpoint requesting access to the wireless network
  • AuthenticatorWireless Access Point (WAP) relaying EAP messages between client and backend server
  • Authentication ServerRADIUS server validating user credentials against a user database

Answer

Supplicant matches Client software or endpoint requesting access; Authenticator matches Wireless Access Point (WAP) relaying EAP messages; Authentication Server matches RADIUS server validating user credentials.
In an 802.1X architecture, the Supplicant requests network access, the Authenticator (WAP) relays authentication traffic, and the Authentication Server (RADIUS) evaluates credentials against the centralized database.

Step-by-Step Solution

1
Identify the endpoint requesting connectivity.
The client device operating on the wireless network is defined as the Supplicant.
In the 802.1X standard, the device seeking network admission is the supplicant.
2
Identify the intermediary network device controlling access.
The Wireless Access Point serves as the Authenticator.
The access point acts as a gatekeeper, relaying EAPOL packets from the client to RADIUS format for the server.
3
Identify the database authority issuing authentication decisions.
The central server running RADIUS functions as the Authentication Server.
The AAA/RADIUS server compares submitted credentials against directory services like Active Directory to grant or deny access.

Key Concept

802.1X Wireless Framework Roles
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Topics

Wireless Security and Authentication

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