Question 50

Bluetooth is specifically designed for distances up to 30 feet.

Bluetooth technology is intended for short-range communication, typically effective within a range of 30 feet, making it ideal for connecting devices such as headphones, speakers, and smartphones.

A) Bluetooth

Bluetooth is a wireless technology specifically designed for short-range data transmission, usually effective within a distance of about 30 feet. This makes it suitable for personal area networks where devices need to communicate over short distances without the need for a wired connection.

B) Wi-Fi

Wi-Fi is designed for longer-range communication, typically covering distances of up to several hundred feet. While it can operate within close proximity, its primary function is not limited to short-range transmission like Bluetooth.

C) Wide area network (WAN)

WANs are designed to cover large geographical areas, connecting networks over distances that can span cities or even countries. This method is not suitable for short-range transmission, as it is intended for much broader connectivity.

D) Near field communication (NFC)

NFC is a short-range communication technology but is typically effective only within a few centimeters. While it is used for very close-range interactions, it does not extend to 30 feet, making it unsuitable for this question's context.

Conclusion

Bluetooth is the definitive answer as it is specifically engineered for data transmission over distances up to 30 feet, unlike the other options which either cover longer ranges (Wi-Fi, WAN) or shorter ranges (NFC). Each alternative fails to meet the specified criteria of the question, reinforcing Bluetooth's position as the correct choice.