What security practice requires users to provide two or more distinct verification credentials (such as a password and a one-time SMS/authenticator code) to gain account access?
Answer and explanation
Correct answer: B. Multi-Factor Authentication (MFA)
- Step 1: Multi-Factor Authentication (MFA) requires credentials from at least two different categories: something you know (password), something you have (hardware token/phone), or something you are (biometrics).
- Step 2: This prevents account compromise even if passwords are stolen.
Answer
Multi-Factor Authentication (MFA).
Why not the others: 'Single Sign-On' allows one login to access multiple applications; 'Public Key Infrastructure' manages digital certificates; 'Role-Based Access Control' assigns permissions based on organizational roles.
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