CompTIA Security+ (SY0-701) — Question 257

A company wants to implement MFA. Which of the following enables the additional factor while using a smart card?

Answer options

• A. PIN
• B. Hardware token
• C. User ID
• D. SMS

Correct answer: A

Explanation

The correct answer is A, as a PIN serves as the additional authentication factor when a smart card is used. Options B, C, and D do not directly relate to the smart card's functionality in this context; a hardware token is a separate device, a user ID is typically the first factor, and SMS is a method for receiving one-time codes rather than an additional factor linked to a smart card.