A wireless technology standard for exchanging data over short distances.

A wireless technology standard for exchanging data over short distances.

• A. Wireless
• B. NFC
• C. Bluetooth
• D. USB (A/B/C)

Answer: (C)

Short-range wireless data exchange is what this question is getting at. Bluetooth is a defined wireless technology standard meant for exchanging data over short distances between devices, such as phones, headphones, keyboards, and other peripherals. It operates in the 2.4 GHz band and is designed for low-power, small-range connections, typically within about 10 meters (though range can vary by class and environment). NFC also provides wireless data exchange but over an extremely short distance (a few centimeters) and is used for rapid, proximity-based actions rather than general data transfer. USB is a wired interface, so it isn’t wireless. A generic term like “wireless” isn’t a specific standard, so Bluetooth best fits the description of a standard for short-range data exchange.

Short-range wireless data exchange is what this question is getting at. Bluetooth is a defined wireless technology standard meant for exchanging data over short distances between devices, such as phones, headphones, keyboards, and other peripherals. It operates in the 2.4 GHz band and is designed for low-power, small-range connections, typically within about 10 meters (though range can vary by class and environment). NFC also provides wireless data exchange but over an extremely short distance (a few centimeters) and is used for rapid, proximity-based actions rather than general data transfer. USB is a wired interface, so it isn’t wireless. A generic term like “wireless” isn’t a specific standard, so Bluetooth best fits the description of a standard for short-range data exchange.