2. What is the difference between Wi-Fi and Bluetooth? (a) Both share data, but only Wi-Fi does this using radio frequencies. (b) Both connect devices but only Wi-Fi is used for encrypted data. (c) Both use radio frequencies, but Bluetooth uses high-power radio frequency. (d) Both work with computers, but only Bluetooth can be used in a headset.

The correct answer is (a) Both share data, but only Wi-Fi does this using radio frequencies.<br /><br />Wi-Fi and Bluetooth are both wireless communication technologies, but they have some key differences:<br /><br />1. Radio frequency: Wi-Fi uses radio frequencies to transmit data, while Bluetooth uses a lower frequency radio signal.<br /><br />2. Range: Wi-Fi has a much longer range than Bluetooth, typically up to 100 meters (328 feet) for Wi-Fi and up to 10 meters (33 feet) for Bluetooth.<br /><br />3. Data transfer speed: Wi-Fi generally has higher data transfer speeds than Bluetooth, with typical speeds ranging from 1 Mbps to 1 Gbps for Wi-Fi and up to 2 Mbps for Bluetooth.<br /><br />4. Power consumption: Bluetooth generally consumes less power than Wi-Fi, making it more suitable for battery-powered devices.<br /><br />5. Use cases: Wi-Fi is commonly used for internet connectivity and data transfer between devices, while Bluetooth is often used for short-range communication between devices, such as connecting a smartphone to a wireless headset or transferring files between devices.<br /><br />So, the correct answer is (a) Both share data, but only Wi-Fi does this using radio frequencies.