AP CSP Day 59: Multi-Factor Authentication
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Big Idea 5
Day 59 Practice
Focus: Multi-Factor Authentication
Practice Question
Which is an example of multi-factor authentication?
Why This Answer?
Multi-factor authentication requires factors from different categories. Password (knowledge) + fingerprint (biometric) are different factors.
Why Not the Others?
A) Both are knowledge-based - same factor type.
C) Two passwords are both knowledge - not multi-factor.
D) Username isn't a security factor, just an identifier.
Common Mistake
Watch Out!
Thinking any two credentials are multi-factor. Must be from different categories: knowledge, possession, biometric.
AP Exam Tip
Factor types: Knowledge (password), Possession (phone/token), Biometric (fingerprint). Multi-factor = different categories.