Why beacon messages are used in WLANS?

Beacon messages in WLANs are used to advertise the presence of a wireless network and provide essential information to clients, such as the network name (SSID), supported data rates, and security protocols. These periodic frames enable devices to discover and connect to available networks, allowing for efficient roaming and maintaining connections. Additionally, beacon messages help synchronize the clocks of devices within the network, ensuring smooth communication and coordination.