CompTIA Security+ (SY0-501) — Question 173

An employer requires that employees use a key-generating app on their smartphones to log into corporate applications. In terms of authentication of an individual, this type of access policy is BEST defined as:

Answer options

• A. Something you have.
• B. Something you know.
• C. Something you do.
• D. Something you are.

Correct answer: A

Explanation

The correct answer is A, as the use of a key-generating app on smartphones represents a physical possession required for authentication. Options B, C, and D refer to knowledge-based, action-based, and biometric forms of authentication, respectively, which do not apply to the scenario of using a mobile app.