NSE 6 – FortiAuthenticator 6.1 — Question 8

Which EAP method is known as the outer authentication method?

Answer options

• A. EAP-TLS
• B. EAP-GTC
• C. PEAP
• D. MSCHAPv2

Correct answer: C

Explanation

The correct answer is C, PEAP, as it encapsulates a second authentication protocol within a secure tunnel, serving as the outer method. EAP-TLS (A) is an inner authentication method that uses certificates, while EAP-GTC (B) and MSCHAPv2 (D) are also inner methods that do not provide the same outer authentication layer as PEAP.