What is the difference between Bluetooth and Wi-Fi devices?
- ABluetooth uses 2-4 GHz radio frequency band, whereas Wi-Fi can use 2-4 GHz or 5 GHz frequency bandCorrect
- BBluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
- CWhen information is transmitted between two devices using Bluetooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
- DThe statements (a) and (b) given above are correct in this context
Explanation
The correct option is A because of the specific radio frequency bands these technologies utilize. Bluetooth operates globally on the 2.4 GHz short range radio frequency band. In contrast, Wi-Fi is more versatile and can operate on both the 2.4 GHz and 5 GHz bands to provide higher data speeds and reduce interference.
Option B is incorrect because Bluetooth is primarily for Wireless Personal Area Networks WPAN while Wi-Fi is for Wireless Local Area Networks WLAN. Neither is designed for Wide Area Networks WWAN.
Option C is incorrect because neither technology requires a direct line of sight to function; they both use radio waves that can pass through obstacles like walls.
Option D is incorrect because only statement A is scientifically accurate.
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