Practice question

What best defines multi-factor authentication (MFA) in corporate account security?

  1. Requiring two or more independent proofs of identity from different categories — for example, a password (knowledge) plus a code generated by a mobile app (possession)
  2. Typing the same long password twice in two different fields
  3. Changing the password every week, regardless of any second proof
  4. Logging in from two different computers at the same time

Answer: A — Requiring two or more independent proofs of identity from different categories — for example, a password (knowledge) plus a code generated by a mobile app (possession)

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