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Difficulty: MediumNetwork Host Services and Server Roles

A network administrator is implementing a WPA3-Enterprise wireless network across a corporate campus. When users attempt to connect their laptops to the corporate SSID, the wireless access points pass the user credentials to a centralized infrastructure service to validate them against the domain directory before granting network access. Which server role is responsible for handling these centralized authentication and authorization requests?

  1. AAA / RADIUS serverAnswer
  2. B
    DHCP server
  3. C
    Syslog server
  4. D
    APIPA auto-configuration service

Answer

The AAA / RADIUS server is responsible for authenticating and authorizing network connection requests against a central user database.
In a 802.1X enterprise network setup, wireless access points act as authenticators that forward user credentials to a RADIUS/AAA server. The RADIUS server queries the central domain database (such as Active Directory) to authenticate the user and authorize access to the network.

Step-by-Step Solution

1
Identify the primary requirement in the scenario.
The scenario requires validating client user credentials passed by wireless access points against a central directory.
Enterprise wireless access security (such as 802.1X/WPA3-Enterprise) relies on a centralized access control service rather than pre-shared keys.
2
Evaluate host server roles that match authentication and authorization.
RADIUS (Remote Authentication Dial-In User Service) is the standard AAA server protocol used to negotiate access between network access points and directory services.
RADIUS centralizes identity verification and access permissions for users connecting to switches, VPNs, or wireless access points.

Key Concept

Authentication, Authorization, and Accounting (AAA) / RADIUS Server Role
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Topics

Network Host Services and Server Roles

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