A technician is setting up a device to use two-factor authentication. Which of the following meets this requirement?

The correct answer is C. Password/thumbprint. Two-factor authentication (2FA) requires two credentials from two DIFFERENT authentication factor categories: (1) Something you know (password, PIN, security question), (2) Something you have (smart card, token, phone), (3) Something you are (biometrics - fingerprint, retinal…

Hardware

Question

Options

AThumbprint/retinal scan
BPassword/password
CPassword/thumbprint
DPassword/PIN

How the community answered

(25 responses)

B
4% (1)
C
92% (23)
D
4% (1)

Explanation

Two-factor authentication (2FA) requires two credentials from two DIFFERENT authentication factor categories: (1) Something you know (password, PIN, security question), (2) Something you have (smart card, token, phone), (3) Something you are (biometrics - fingerprint, retinal scan, facial recognition). Option A (thumbprint/retinal scan) uses two biometrics - both 'something you are' - making it single-factor with two inputs, not 2FA. Option B (password/password) is two instances of the same factor. Option D (password/PIN) combines two 'something you know' factors - still single-factor. Only option C (password + thumbprint) combines 'something you know' with 'something you are,' satisfying the requirement for two distinct factor types.

Topics

#Two-factor authentication#Authentication factors#Security#Biometrics

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