Beginner
Cybersecurity & Cryptography
Q8 / 100
What is two-factor authentication (2FA)?
Correct! Well done.
Incorrect.
The correct answer is B) Requiring two independent factors — typically something you know (password) and something you have (phone/token) — to verify identity
B
Correct Answer
Requiring two independent factors — typically something you know (password) and something you have (phone/token) — to verify identity
Explanation
2FA/MFA combines factors: knowledge (password), possession (TOTP app, hardware key), inherence (biometrics). Even if a password is stolen, attackers need the second factor.
Progress
8/100