Which of the following is an example of multifactor authentication?

Question

Options

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

• A
  95% (56)
• B
  3% (2)
• C
  2% (1)

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.

No community discussion yet for this question.