What is the difference between Bluetooth and Wi-Fi devices?(2011)
a) Bluetooth uses 2.4 GHz radio frequency band, whereas-Wi-Fi can use 2.4 GHz or 5 GHz frequency band
b) Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
c) When information is transmitted between two devices using Blue-tooth 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
d) The statements (a) and (b) given above are correct in this context
Answer: A
Although both are wireless forms of communication, Bluetooth and Wi-Fi differ in terms of their purpose, capabilities, and other factors. Bluetooth allows for short-range data transfer between devices.
As an example, it is commonly employed in headsets for mobile phones, enabling hands-free phone use. Wi-Fi, on the other hand, allows devices to connect to the Internet.
Bluetooth limits the number of devices that can connect at any one time, whereas Wi-Fi is open to more devices and more users. In addition, Bluetooth, because it requires only an adapter on each connecting device, tends to be simpler to use and needs less power than Wi-Fi, although this is achieved at the expense of range and speed of data transfer, in which Wi-Fi typically exceeds Bluetooth’s capabilities.
