What wireless security protocol provides mutual authentication without using an X.

EAP-FAST (Flexible Authentication via Secure Tunneling) provides:

Mutual authentication using Protected Access Credentials (PACs).

Does not require X.509 certificates for either client or server (although optional for servers).

Is faster and easier to deploy in environments lacking a PKI.

Incorrect:

B. EAP-MD5 provides no mutual authentication.

C. EAP-TLS requires client and server certificates.

D. PEAPv0/EAP-MSCHAPv2 requires a server certificate.

E. EAP-TTLS requires a server certificate.

F. PEAPv1/EAP-GTC still requires a server certificate.