CompTIA Security+ Question E-59

Speaking a passphrase into a voice print analyzer is an example of which of the following security concepts?

A. Two factor authentication
B. Identification and authorization
C. Single sign-on
D. Single factor authentication

Answer: A

Explanation:
Two-factor authentication is when two different authentication factors are provided for authentication purposes. Speaking (Voice) – something they are. Passphrase – something they know.