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Multi-factor authentication (MFA) requires a user to present:
ATwo passwords each shorter than four characters
BTheir address and date of birth, in that order
CAt least two independent factors such as a password plus a one-time code or biometric
DOnly their corporate email — nothing more
Answer & Solution
Correct answer: C. At least two independent factors such as a password plus a one-time code or biometric
MFA = at least two factors from different categories (know / have / are). Two short passwords are still single-factor. Address / email alone don't authenticate at all.
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