300-715 Question #362: Real Exam Question with Answer & Explanation

Question

Which component of the 802.1X authentication process provides the identity credentials and communicates using EAP at Layer 2?

Options

• Aauthentication server
• Bauthenticator
• Cauthentication database
• Dsupplicant

Explanation

{"question_number": 6, "question": "Which component of the 802.1X authentication process provides the identity credentials and communicates using EAP at Layer 2?", "correct_answer": "D", "explanation": "In 802.1X, there are three roles: the Supplicant (the end device requesting access), the Authenticator (the switch or wireless AP that enforces access), and the Authentication Server (typically RADIUS/ISE that validates credentials). The Supplicant (D) is the component that holds and presents identity credentials (username/password, certificate, etc.) and communicates directly with the authenticator using EAP (Extensible Authentication Protocol) encapsulated in EAPOL (EAP over LAN) frames at Layer 2. The Authenticator (B) relays EAP messages between the supplicant and the authentication server but does not originate credentials. The Authentication Server (A) processes credentials received over RADIUS, not directly via EAP at Layer 2.", "generated_by": "claude-sonnet", "llm_judge_score": 4}

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