Certified Network Defender (CND) — Question 102

Which of the following is a mandatory password-based and key-exchange authentication protocol?

Answer options

• A. PPP
• B. CHAP
• C. VRRP
• D. DH-CHAP

Correct answer: D

Explanation

DH-CHAP is the correct answer as it specifically incorporates both password-based authentication and key exchange mechanisms. PPP and CHAP are not mandatory for key exchange, and VRRP is a protocol for virtual router redundancy, making them unsuitable options.