The act of requiring two of the three factors to be used in the authentication process refers to?

A.
Two-Factor Authentication

B.
One-Factor Authentication

C.
Bi-Factor Authentication

D.
Double Authentication

Explanation:
Two-Factor Authentication is a security process that confirms user identities using two distinctive
factors—something you know, such as a Personal Identification Number (PIN), and something you
have, such as a smart card or token. The overall strength of Two-Factor Authentication lies in the
combination of both factors, something you know and something you have.