Q. What is the benefit of wireless controller?

Answer

Connecting wireless devices to a WLAN, or wireless local area network, is made possible by a device called a wireless LAN controller. Every wireless access point (AP) on the network communicates with a central device called a wireless LAN controller, which is often housed in the data center. The router's output bandwidth is stretched by the wireless access controller so that it can be used by the rest of the network. The wireless controller acts like an amplifier in a stereo system, extending the range at which devices may communicate. Simply put, each AP must function independently, making centralized management a challenge.