Biometric Authentication Uses a Physical Attribute

200-301 By islever Editorial Last updated

Describe security password policies elements, such as management, complexity, and password alternatives (multifactor authentication, certificates, and biometrics)

Short answer

A Biometric authentication requires a physical attribute such as a fingerprint, face, or iris scan to verify the user.

Question

Which authentication method requires the user to provide a physical attribute to authenticate successfully?
  1. biometric Correct Answer
  2. password
  3. multifactor
  4. certificate

Key Takeaways

The 'something you are' factor is biometric; the question asks specifically for a physical attribute, which maps to biometrics alone.

Biometrics are an inherence factor: something the user physically is. Passwords are knowledge, certificates are possession, and multifactor combines types. Only biometrics require a physical/biological attribute.

Common mistake: Picking multifactor (C): that is a combination of factors, not a single physical-attribute method. Password (B) is knowledge; certificate (D) is possession.

Expert Analysis

Why the Answer Is Correct

A is correct. Biometric authentication requires a physical/biological attribute — fingerprint, facial recognition, or iris scan — to verify the user.

Why the Other Options Are Wrong

B (password) is a knowledge factor. C (multifactor) is a combination of factors, not a physical attribute by itself. D (certificate) is a possession factor.

Community Comment Notes

The vote is A (100). The comment simply confirms biometrics require a physical attribute such as a fingerprint, face, or iris.

Official Reference

https://learningnetwork.cisco.com/s/ccna-exam-topics

This link opens the official vendor documentation in a new tab.

Community Votes

A
100%

100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 3 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 3

  1. MicroDiff 👍 1 Answered A
    Biometric authentication requires the user to provide a physical attribute, such as a fingerprint, facial recognition, or an iris scan, to authenticate successfully.
  2. exiledwl 👍 3 Answered A
    Biomettric
  3. Robert22 👍 1 Answered A
    answer A biometric

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