Question 58

Bluetooth is specifically designed for distances up to 30 feet.

Bluetooth technology is optimized for short-range communication, typically effective within a range of about 30 feet, making it suitable for personal area networks.

A) Wide area network (WAN)

Wide area networks (WANs) are designed to cover larger geographical areas and can span cities or even countries. They are not suitable for short-distance communication and therefore do not fit the criteria of being specifically designed for distances up to 30 feet.

B) Wi-Fi

Wi-Fi technology allows for wireless communication over greater distances than Bluetooth, generally ranging from 100 to 300 feet depending on the environment. As such, it is not specifically designed for the 30-foot distance limitation set by the question.

C) Bluetooth

Bluetooth is the correct option as it is specifically designed for short-range communication, typically functioning effectively within a distance of up to 30 feet. This makes it ideal for connecting devices like headphones, speakers, and smartphones in close proximity.

D) Near field communication (NFC)

Near field communication (NFC) is designed for very short-range communication, typically requiring devices to be within a few centimeters of each other. While it operates over a shorter distance than Bluetooth, it is not specifically designed for a range of 30 feet.

Conclusion

Bluetooth is definitively the correct answer as it is tailored for short-range data transmission, effectively operating within a 30-foot range. In contrast, WANs and Wi-Fi cover much larger distances, while NFC operates at an even shorter range than Bluetooth. This specificity in Bluetooth's design makes it the only suitable choice for the given question.