Which IEEE standard defines wireless personal area networks (WPANs)?

• A. IEEE 802.11
• B. IEEE 802.15
• C. IEEE 802.16
• D. IEEE 802.20

Answer: (B)

The specified IEEE standard that defines wireless personal area networks (WPANs) is IEEE 802.15. This standard is designed to facilitate communication between devices over short distances, typically within a range of a few meters to around 30 meters. It encompasses various technologies like Bluetooth and Zigbee, which are widely used for connecting personal electronic devices such as smartphones, tablets, and home automation systems.

In WPANs, the emphasis is on low-power and low-cost solutions that enable quick and efficient data exchange among personal devices in close proximity. The IEEE 802.15 standard addresses concerns such as power management, security, and interoperability among different WPAN technologies, making it essential for enabling seamless connectivity in various consumer and industrial applications. This differentiation is important, as it distinguishes WPANs from other types of networks defined by different IEEE standards, which serve entirely different purposes and ranges.