Which of the following is true of two-factor authentication?

The correct answer is D. It relies on two independent proofs of identity. The Answer: It relies on two independent proofs of identity. Two-factor authentication refers to using two independent proofs of identity, such as something the user has (e.g. a token card) and something the user knows (a password). Two-factor authentication may be used with…

Submitted by daniela_cl· Apr 18, 2026Access Controls

Question

Options

AIt uses the RSA public-key signature based on integers with large prime factors.
BIt requires two measurements of hand geometry.
CIt does not use single sign-on technology.
DIt relies on two independent proofs of identity.

How the community answered

(55 responses)

A
2% (1)
B
5% (3)
C
4% (2)
D
89% (49)

Explanation

The Answer: It relies on two independent proofs of identity. Two-factor authentication refers to using two independent proofs of identity, such as something the user has (e.g. a token card) and something the user knows (a password). Two-factor authentication may be used with single sign- The following answers are incorrect: It requires two measurements of hand geometry. Measuring hand geometry twice does not yield two independent proofs. It uses the RSA public-key signature based on integers with large prime factors. RSA encryption uses integers with exactly two prime factors, but the term "two-factor authentication" is not used in that context. It does not use single sign-on technology. This is a detractor.

Topics

#Two-factor authentication#Authentication factors#Multi-factor authentication#Identity verification

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