312-50V11 · Question #348
What are the three types of authentication?
The correct answer is B. Something you: have, know, are. The three classical authentication factors are something you know, something you have, and something you are - forming the basis of multi-factor authentication.
Question
What are the three types of authentication?
Options
- ASomething you: know, remember, prove
- BSomething you: have, know, are
- CSomething you: show, prove, are
- DSomething you: show, have, prove
How the community answered
(25 responses)- B88% (22)
- C8% (2)
- D4% (1)
Why each option
The three classical authentication factors are something you know, something you have, and something you are - forming the basis of multi-factor authentication.
'Remember' and 'prove' are not recognized authentication factor categories - only 'know' is valid from this set.
Something you know includes passwords, PINs, and security questions. Something you have includes hardware tokens, smart cards, and mobile devices. Something you are refers to biometric characteristics such as fingerprints, retina scans, and facial recognition. These three categories are the foundation of the authentication factor model defined in security standards and are required knowledge for any security certification.
'Show' and 'prove' are not defined authentication factor types in any standard security framework.
'Show' and 'prove' are not recognized authentication factor categories - only 'have' is valid from this set.
Concept tested: Three factors of authentication - know, have, are
Source: https://csrc.nist.gov/glossary/term/authentication_factor
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