CompTIA A+ Core 1 (220-1101) — Question 540

A user failed to gain access to a building's entrance after security measures at the entrance were upgraded last week. The company implemented the 13.56MHz frequency short band, and users can now utilize their mobile devices to authenticate. Which of the following has to be enabled for the mobile device to authenticate?

Answer options

• A. Bluetooth
• B. Biometrics
• C. NFC
• D. PIN

Correct answer: C

Explanation

The correct answer is C, NFC, because Near Field Communication is necessary for mobile devices to communicate with the upgraded security system. Bluetooth, while useful for other types of connections, is not required for this specific authentication process. Similarly, biometrics and PIN do not pertain to the communication frequency being utilized in this scenario.