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.
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)- B94% (29)
- C3% (1)
- D3% (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.
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.
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.
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.
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.
Voice pattern and retina scan are both biometric factors (something you are), representing only one factor category and not qualifying as MFA.
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
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