220-1002 Question #336: Real Exam Question with Answer & Explanation

The correct answer is A: RADIUS. RADIUS (Remote Authentication Dial-In User Service) is a centralized AAA (Authentication, Authorization, and Accounting) protocol. When integrated with a wireless network (typically via WPA2-Enterprise), RADIUS authenticates users against a directory (like Active Directory) using

Question

A large corporation wants to secure its wireless network so only employees can connect. Which of the following technologies should be used to control access by user account?

Options

ARADIUS
BWPA2
CTKIP
DAES

Explanation

RADIUS (Remote Authentication Dial-In User Service) is a centralized AAA (Authentication, Authorization, and Accounting) protocol. When integrated with a wireless network (typically via WPA2-Enterprise), RADIUS authenticates users against a directory (like Active Directory) using individual credentials - username and password - rather than a shared passphrase. This means access is controlled per user account, which is exactly what the scenario requires. WPA2 (B) is an encryption and authentication framework but relies on RADIUS for per-user control in enterprise mode. TKIP (C) and AES (D) are encryption algorithms used within WPA/WPA2 - they handle data confidentiality, not user-level access control. Only RADIUS provides centralized, per-account access management for wireless networks.

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