CompTIA Security+ (SY0-501) — Question 650

Which of the following is a component of multifactor authentication?

Answer options

• A. RADIUS
• B. SSO
• C. Transitive trust
• D. OTP

Correct answer: A

Explanation

RADIUS is a protocol that can be used in multifactor authentication to manage user access. The other options, while related to security, do not directly constitute components of multifactor authentication; SSO simplifies user access but does not add multiple factors, transitive trust relates to trust relationships, and OTP is a method of delivering one-time passwords rather than a system component.