CompTIA Security+ (SY0-501) — Question 436

When used together, which of the following qualify as two-factor authentication?

Answer options

• A. Password and PIN
• B. Smart card and PIN
• C. Proximity card and smart card
• D. Fingerprint scanner and iris scanner

Correct answer: B

Explanation

The correct answer is B, as a smart card (something you have) combined with a PIN (something you know) fulfills the requirement for two-factor authentication. Options A, C, and D either rely on a single factor or do not combine two distinct factors effectively.