An EAP message begins with an ________ message.

• A. EAP request
• B. EAP accept
• C. EAP start
• D. EAP response

Answer: (C)

An EAPOL authentication session starts when the supplicant sends an EAP start frame to the authenticator. This Start signal tells the authenticator to begin the EAP negotiation. After this, the authenticator usually issues an EAP-Request (often for identity), and the dialogue continues with EAP-Response messages and further requests until authentication completes. The Start message is the initiating step, whereas requests and responses occur as the exchange progresses; there isn’t a defined EAP message called “accept.” So the best fit is the EAP start.