SK0-004 · Question #804
A systems administrator has been directed to implement three-factor authentication for a new secure system. Which of the following authentication methods are redundant and only count as one factor?…
The correct answer is A. Password B. Keypad code. In multi-factor authentication, factors must come from different categories - something you know, something you have, and something you are - so two 'something you know' factors count as only one factor.
Question
A systems administrator has been directed to implement three-factor authentication for a new secure system. Which of the following authentication methods are redundant and only count as one factor? (Choose two.)
Options
- APassword
- BKeypad code
- CRFID chip
- DImitating a gesture
- EFingerprint
How the community answered
(36 responses)- A75% (27)
- C3% (1)
- D8% (3)
- E14% (5)
Why each option
In multi-factor authentication, factors must come from different categories - something you know, something you have, and something you are - so two 'something you know' factors count as only one factor.
A password is a 'something you know' factor.
A keypad code is also a 'something you know' factor. Because both a password and a keypad code belong to the same authentication category, using both together satisfies only one of the three required factors for three-factor authentication, making them redundant with each other.
An RFID chip is a 'something you have' factor, which is a distinct authentication category and counts as its own separate factor.
Imitating a gesture is a 'something you are' or behavioral biometric factor, representing a distinct authentication category.
A fingerprint is a 'something you are' biometric factor, which is a distinct authentication category and counts as its own separate factor.
Concept tested: Multi-factor authentication factor categories
Source: https://learn.microsoft.com/en-us/azure/active-directory/authentication/concept-mfa-howitworks
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