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AWS Certified Solutions Architect study material · question 85 of 500

How many MFA devices may a single IAM user register?

  1. Exactly one
  2. Up to three
  3. There is no limit
  4. Up to eight, though only one is needed to sign in
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Answer: D. Up to eight, though only one is needed to sign in

Registering several devices reduces the risk of losing access if one is lost or broken, but sign-in needs only one of them.

Source: AWS Multi-factor authentication in IAM (Amazon Web Services) — Multi-factor authentication

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