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SK0-004 · Question #822

A security administrator wishes to enable multifactor authentication. Which of the following would achieve that objective? (Choose two.)

The correct answer is B. Fingerprint and one-time passcode F. Random number generator and passphrase. Multifactor authentication requires combining factors from two or more distinct categories - something you know, something you have, and something you are - so both correct answers each pair factors from different categories.

Security and disaster recovery

Question

A security administrator wishes to enable multifactor authentication. Which of the following would achieve that objective? (Choose two.)

Options

  • ASecurity token and dongle
  • BFingerprint and one-time passcode
  • CUsername and challenge questions
  • DPassword and PIN
  • EVoice pattern and retina scan
  • FRandom number generator and passphrase

How the community answered

(31 responses)
  • B
    94% (29)
  • C
    3% (1)
  • D
    3% (1)

Why each option

Multifactor authentication requires combining factors from two or more distinct categories - something you know, something you have, and something you are - so both correct answers each pair factors from different categories.

ASecurity token and dongle

Both a security token and a dongle are possession factors (something you have), representing only a single factor category and therefore not constituting true MFA.

BFingerprint and one-time passcodeCorrect

A fingerprint is a biometric factor (something you are) and a one-time passcode is a possession factor (something you have), combining two different factor categories and satisfying the MFA requirement.

CUsername and challenge questions

A username is an identifier rather than an authentication factor, and challenge questions are knowledge-based, so this combination does not span multiple factor types.

DPassword and PIN

A password and a PIN are both knowledge factors (something you know), meaning only one factor category is used and this remains single-factor authentication.

EVoice pattern and retina scan

Voice pattern and retina scan are both biometric factors (something you are), representing only one factor category and not qualifying as MFA.

FRandom number generator and passphraseCorrect

A random number generator device such as a hardware token is a possession factor (something you have) and a passphrase is a knowledge factor (something you know), again spanning two distinct factor categories and meeting the MFA definition.

Concept tested: Multifactor authentication valid factor category combinations

Source: https://csrc.nist.gov/glossary/term/multi_factor_authentication

Topics

#multifactor authentication#authentication factors#biometrics#security tokens

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