CompTIA Security+ Question F-78

The security department has implemented a new laptop encryption product in the environment. The product requires one user name and password at the time of boot up and also another password after the operating system has finished loading. This setup is using which of the following authentication types?

A. Two-factor authentication
B. Single sign-on
C. Multifactor authentication
D. Single factor authentication

Answer: D

Single-factor authentication is when only one authentication factor is used. In this case, Something you know is being used as an authentication factor. Username, password, and PIN form part of Something you know.