Question 25

Bluetooth is specifically designed for distances up to 30 feet.

Bluetooth technology is optimized for short-range communication, typically within a range of about 30 feet, making it suitable for connecting devices like headphones, smartphones, and other peripherals.

A) Wide area network (WAN)

Wide area networks (WANs) are designed for long-distance communication, often spanning cities or countries. They are not suitable for short-range data transmission, which is the focus of the question.

B) Bluetooth

Bluetooth is a short-range wireless technology specifically designed for communication over distances typically up to 30 feet. This makes it the correct choice for transmitting data over limited distances, as it efficiently connects devices within this range.

C) Wi-Fi

Wi-Fi technology is designed for broader coverage and can transmit data over much greater distances than 30 feet, usually reaching up to hundreds of feet indoors. Therefore, it is not the correct method for short-range data transmission as specified in the question.

D) Near field communication (NFC)

Near field communication (NFC) operates at an even shorter range than Bluetooth, usually requiring devices to be within a few centimeters of each other. While it is effective for quick, close-range data exchanges, it does not fit the distance criteria of up to 30 feet.

Conclusion

Bluetooth is the definitive answer as it is specifically tailored for distances up to 30 feet, making it ideal for short-range connectivity. In contrast, WAN, Wi-Fi, and NFC either cover much longer or shorter ranges, thus failing to meet the requirements set forth in the question.