CompTIA Security+ (SY0-501) — Question 245

Users in a corporation currently authenticate with a username and password. A security administrator wishes to implement two-factor authentication to improve security.
Which of the following authentication methods should be deployed to achieve this goal?

Answer options

Correct answer: C

Explanation

The correct answer is C, Smart card, as it provides a second factor of authentication in addition to a password, thereby enhancing security. Options A (PIN), B (Security question), and D (Passphrase) do not offer a distinct second factor, while E (CAPTCHA) is primarily used for distinguishing between human users and bots, not for authentication.