What is channel planning in the 2.4 GHz wireless band and why is it important?

• A. Using channels 2, 4, and 8 in 2.4 GHz.
• B. Ignoring channel placement; it does not affect performance.
• C. Selecting non-overlapping channels (such as 1, 6, and 11) to minimize interference and maximize performance.
• D. Selecting the strongest single channel across all APs.

Answer: (C)

Channel planning in the 2.4 GHz band means intentionally assigning different channels to nearby wireless access points so their signals don’t fight each other for airtime. In this band, each channel is fairly wide and overlaps with neighbors, so using non-overlapping channels helps prevent interference. The practical approach is to place APs on channels that don’t overlap with one another, giving each network its own clean slice of the spectrum. This reduces co‑channel and adjacent‑channel interference, boosts throughput, and makes the network more reliable in crowded environments.

Choosing channels that overlap would lead to interference and degraded performance. Ignoring channel placement allows interference to accumulate, hurting throughput and user experience. Trying to use only the strongest single channel across all APs ignores load balancing and can create bottlenecks or dead spots.