300-120 WLSI: Implementing Cisco Wireless Advanced Solutions

EAP is the authentication framework used in IEEE 802.1X access control: 802.1X carries EAP exchanges between the supplicant and authenticator. RADIUS can then encapsulate and relay EAP packets between the authenticator/NAS and the back-end authentication server. WPA is the strongest distractor because WPA-Enterprise commonly uses 802.1X/EAP, but WPA itself is a Wi-Fi security scheme rather than the EAP transport/authentication framework. LDAP is a directory-access protocol, not an EAP transport.