EC-Council
312-50V9 · Question #70
312-50V9 Question #70: Real Exam Question with Answer & Explanation
The correct answer is A: USB token and PIN. Two-factor authentication requires credentials from two distinct factor categories: something you know, something you have, or something you are.
Question
Which set of access control solutions implements two-factor authentication?
Options
- AUSB token and PIN
- BFingerprint scanner and retina scanner
- CPassword and PIN
- DAccount and password
Explanation
Two-factor authentication requires credentials from two distinct factor categories: something you know, something you have, or something you are.
Common mistakes.
- B. Both a fingerprint and a retina scan are biometric factors that fall under 'something you are', so this is single-factor authentication using two inputs from the same category.
- C. Both a password and a PIN are knowledge-based factors ('something you know'), making this single-factor authentication despite involving two separate secrets.
- D. An account name and password are both 'something you know' factors, providing only one authentication factor category and not satisfying two-factor requirements.
Concept tested. Two-factor authentication factor category requirements
Reference. https://csrc.nist.gov/glossary/term/multi_factor_authentication
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