What is the most secure type of EAP?

A.
EAP-TLS

B.
EAP-TTLS

C.
LEAP

D.
PEAP

Explanation:
Answer A is correct; EAP-TLS is the most secure (and costly) form of EAP because it requires both server and client-side certificates.

Incorrect Answers and Explanations: B, C, and D: Answers B, C, and D are incorrect. EAP-TTLS and PEAP are similar and dont require client-side certificates. LEAP is a Cisco-proprietary protocol that does not require client-side certificates, and also has fundamental security weaknesses.