312-49 · Question #458
When setting up a wireless network with multiple access points, why is it important to set each access point on a different channel?
The correct answer is C. Avoid cross talk. When nearby access points broadcast on the same or overlapping channels, their signals interfere with each other - this is called 'cross talk' or co-channel/adjacent-channel interference. In the 2.4 GHz band, only channels 1, 6, and 11 are fully non-overlapping, which is why…
Question
When setting up a wireless network with multiple access points, why is it important to set each access point on a different channel?
Options
- AAvoid over-saturation of wireless signals
- BSo that the access points will work on different requencies
- CAvoid cross talk
- DMultiple access points can be set up on the same channel without any issues
How the community answered
(27 responses)- A4% (1)
- C89% (24)
- D7% (2)
Explanation
When nearby access points broadcast on the same or overlapping channels, their signals interfere with each other - this is called 'cross talk' or co-channel/adjacent-channel interference. In the 2.4 GHz band, only channels 1, 6, and 11 are fully non-overlapping, which is why enterprise wireless deployments assign these channels to neighboring APs. Cross talk degrades throughput and reliability for all clients. Option D is factually wrong - same-channel APs absolutely cause interference. Options A and B describe the same underlying issue but use imprecise or incorrect terminology.
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