What does Two Factor Authentication stand for?

What does Two Factor Authentication stand for?

• A. Two Factor Authentication
• B. Two Form Authentication
• C. Two Phase Authentication
• D. Two Factor Authorization

Answer: (A)

Two Factor Authentication is about using two different kinds of proof to verify your identity when logging in. Each “factor” is a different type of evidence: something you know (like a password), something you have (a code from an app or hardware token), or something you are (a biometric). Requiring two separate factors makes it harder for someone to impersonate you because they’d need two independent pieces of evidence. The term itself is exactly this idea, and it’s commonly abbreviated 2FA. The other phrases don’t fit because they replace “factor” with something else—“form” or “phase”—or switch to “authorization,” which is about permissions after you’ve proven who you are, not the method of proving it.

Two Factor Authentication is about using two different kinds of proof to verify your identity when logging in. Each “factor” is a different type of evidence: something you know (like a password), something you have (a code from an app or hardware token), or something you are (a biometric). Requiring two separate factors makes it harder for someone to impersonate you because they’d need two independent pieces of evidence. The term itself is exactly this idea, and it’s commonly abbreviated 2FA.

The other phrases don’t fit because they replace “factor” with something else—“form” or “phase”—or switch to “authorization,” which is about permissions after you’ve proven who you are, not the method of proving it.