CompTIA A+ Core 1 (220-1201) — Question 180

Which of the following can be used by a mobile device to access a secure building?

Answer options

• A. Hotspot
• B. Near-field communication
• C. Infrared scanner
• D. Geolocation

Correct answer: B

Explanation

Near-field communication (NFC) is a technology that allows devices to communicate securely over short distances, making it suitable for access control systems in secure buildings. The other options, while useful for connectivity or location services, do not provide the secure communication needed for building access.