Which of the following is a wireless communication that requires devices to be within 6in of each other to transfer information?
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A. B. C. D.B.
The wireless communication that requires devices to be within 6 inches of each other to transfer information is NFC (Near Field Communication).
NFC is a type of wireless communication protocol that allows data transfer between two devices in close proximity to each other, usually within a few centimeters or inches. NFC technology uses radio waves to communicate with other devices, and it operates on the same frequency as RFID (Radio Frequency Identification) technology. NFC is commonly used in smartphones, smartwatches, and other mobile devices for making mobile payments, transferring files, and sharing information.
Infrared (IR) is a wireless communication technology that uses infrared light waves to transmit signals between devices. IR technology requires a direct line of sight between the sending and receiving devices, and the range is limited to a few meters. IR is commonly used in remote controls for televisions and other consumer electronics.
Bluetooth is a wireless communication protocol that allows devices to communicate over short distances, typically up to 10 meters. Bluetooth technology is commonly used in mobile devices, headphones, and speakers for streaming audio, sharing files, and connecting to other devices.
WiFi is a wireless communication protocol that uses radio waves to transmit data over a network. WiFi technology is used to connect devices to the internet and other networks over longer distances, typically up to several hundred meters. WiFi is commonly used in homes, offices, and public spaces for accessing the internet and sharing files between devices.