Boson Practice Exam

You are installing three 802.11b WAPs; which channel set will ensure nonoverlapping operation?

1, 7, 13 1, 2, 3 1, 6, 11 2, 4, 6

Correct Answer:

1, 6, 11

Explanation:

In the 2.4 GHz band, each Wi‑Fi channel is about the same width, so neighboring channels overlap. To prevent interference when you have three APs, you must pick channels whose spectral footprints don’t touch. The reliable way is to space the chosen channels by a fixed gap so there’s a guard between their bands. This spacing pattern—three channels evenly separated—ensures no overlap among the three APs’ transmissions. Other channel sets place channels too close to one another, which leads to overlapping spectra and reduced performance. So the best choice is the set that follows this even spacing of channels, guaranteeing non-overlapping operation across the three APs.

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