Two factor authentication is when you use two different methods for people trying to use the system. For instance, you can use a password and a challenge question

Name: Two factor authentication is when you use two different methods for people trying to use the system. For instance, you can use a password and a challenge question
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Two factor authentication involves using two different methods, such as a password and a challenge question, to verify a user's identity.

Two Factor Authentication Is When You Use Two Different Methods