SY0-301 Question #65: Real Exam Question with Answer & Explanation

The correct answer is A: Credit card and PIN. Multifactor authentication (MFA) requires authentication using two or more different factor categories: something you know, something you have, something you are, somewhere you are, or something you do. A credit card is 'something you have' and a PIN is 'something you know' - the

Question

Which of the following is an example of multifactor authentication?

Options

ACredit card and PIN
BUsername and password
CPassword and PIN
DFingerprint and retina scan

Explanation

Multifactor authentication (MFA) requires authentication using two or more different factor categories: something you know, something you have, something you are, somewhere you are, or something you do. A credit card is 'something you have' and a PIN is 'something you know' - these are two distinct factor categories, making this true MFA. Username and password are both 'something you know' - one factor type. Password and PIN are also both 'something you know.' Fingerprint and retina scan are both 'something you are' (biometrics) - still only one factor category. Only the credit card + PIN combination crosses factor category boundaries.

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