Which IEEE standard is popularly known as Bluetooth?

The IEEE standard that is popularly known as Bluetooth is IEEE 802.15. This standard was developed specifically for wireless personal area networks (WPANs), and it outlines the protocols for short-range communication between devices, which is the primary function of Bluetooth technology. Bluetooth operates in the 2.4 GHz frequency range and is designed to enable devices to communicate wirelessly with minimal power consumption.

The other options refer to different IEEE standards for various networking technologies. IEEE 802.11 is known for wireless local area networks (WLANs) commonly referred to as Wi-Fi, while IEEE 802.16 pertains to broadband wireless access, often known as WiMAX. IEEE 802.20 is associated with mobile broadband access. Each of these standards serves distinct purposes and targets different types of communication technologies, underscoring the specific role of IEEE 802.15 in enabling short-range device connectivity through Bluetooth.