Which term refers to a short-range wireless radio transmission medium used to connect two personal devices, such as a mobile phone and a wireless headset?

Which term refers to a short-range wireless radio transmission medium used to connect two personal devices, such as a mobile phone and a wireless headset?

• A. Bluetooth
• B. NFC
• C. TLS
• D. GPS

Answer: (A)

Bluetooth is the short-range wireless technology designed to connect personal devices like a smartphone and a wireless headset. It operates over the 2.4 GHz band and is optimized for low power, low data-rate links, which suits audio streaming and hands-free calling within about 10 meters. The key idea is creating a personal area network that can pair devices quickly and maintain a stable link for everyday use. NFC also handles short-range communication but only at very close proximity and mainly to initiate pairing or small data transfers, not for ongoing audio streams. TLS is a security protocol for protecting data over networks, not a radio transmission medium, and GPS is a satellite-based positioning system, not a device-to-device link. Bluetooth best fits the description of a short-range wireless medium connecting two personal devices.

Bluetooth is the short-range wireless technology designed to connect personal devices like a smartphone and a wireless headset. It operates over the 2.4 GHz band and is optimized for low power, low data-rate links, which suits audio streaming and hands-free calling within about 10 meters. The key idea is creating a personal area network that can pair devices quickly and maintain a stable link for everyday use. NFC also handles short-range communication but only at very close proximity and mainly to initiate pairing or small data transfers, not for ongoing audio streams. TLS is a security protocol for protecting data over networks, not a radio transmission medium, and GPS is a satellite-based positioning system, not a device-to-device link. Bluetooth best fits the description of a short-range wireless medium connecting two personal devices.