CompTIA ITF+ Practice Test

Two-factor authentication (2FA) is a security process that enhances the protection of user accounts by requiring two distinct forms of identification before granting access. This method significantly increases the security level beyond just a password, which is typically something the user knows.

The first factor is usually something the user knows, like a password or a PIN. The second factor is typically something the user possesses, such as a mobile device that receives a text message or an authentication app that generates a one-time code. By requiring both factors, 2FA helps ensure that even if a password is compromised, unauthorized access to the account is still prevented, as the attacker would need the second factor, which is more difficult to obtain.

This layered approach to security is especially critical in today's digital environment, where cyber threats are prevalent. As for the other options, they revolve around different concepts: a single password method does not enhance security; an encryption technique deals with protecting data during transmission or storage, and a network configuration focuses on how devices are connected and interact, neither of which addresses the specific requirements of user authentication.