Network Implementation: Routing, Switching, and Wireless Protocols Practice Test

Channel planning in WLANs focuses on reducing interference between nearby access points by assigning non-overlapping frequencies to neighboring APs. In the 2.4 GHz band, the available 20 MHz channels largely overlap, so a typical approach is to use the non-overlapping channels in a repeating pattern across the area. This minimizes co-channel and adjacent-channel interference and improves overall performance. Using overlapping channels would increase interference, while trying to run a single channel across all APs would cause collisions and degrade throughput; random channel selection lacks the reliable coordination that planning provides.