What does the IEEE 802 set define?

The IEEE 802 set defines a variety of standards for local area networks (LANs), including those specifically for wireless local area networks (WLANs). One of the most widely recognized standards within this set is IEEE 802.11, which covers the protocols and mechanisms that govern wireless networking, such as how devices connect to the wireless network, the types of radio frequencies used, and security measures for those connections.

While the IEEE 802 family includes standards for wired networks, such as Ethernet (IEEE 802.3), the question specifically highlights the protocols for wireless local area networks. This emphasizes that the focus is on WLAN, showcasing the importance of wireless communication in networking today. The other options either limit the scope to wired networks, suggest a focus on internet protocols, or mention only the physical layer, which does not encompass the broader application of wireless standards that the IEEE 802 set encompasses.