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Difficulty: EasyWired and Wireless Network Issues

A network technician is configuring three 2.4 GHz wireless access points within a small office to ensure complete coverage without frequency interference. Which of the following channel combinations should the technician assign to these access points?

  1. Channels 1, 6, and 11Answer
  2. B
    Channels 1, 2, and 3
  3. C
    Channels 2, 5, and 8
  4. D
    Channels 1, 5, and 10

Answer

Channels 1, 6, and 11 should be assigned because they are the standard non-overlapping channels in the 2.4 GHz spectrum.
In 2.4 GHz Wi-Fi deployments, channels 1, 6, and 11 are spaced 25 MHz apart from each other. Because each channel uses 22 MHz of frequency width, these three channels are the only standard options that operate completely free of frequency overlap.

Step-by-Step Solution

1
Identify the wireless frequency band being used.
The network operates on the 2.4 GHz band.
Channel separation rules differ significantly between the 2.4 GHz and 5 GHz bands.
2
Determine the bandwidth requirements per channel.
Each 2.4 GHz channel occupies 22 MHz of bandwidth, while channel center frequencies are spaced only 5 MHz apart.
Channels must be spaced at least 5 channel numbers apart (25 MHz) to prevent overlapping frequencies.
3
Select the optimal non-overlapping channel scheme.
Channels 1, 6, and 11 provide maximum coverage with zero frequency overlap.
Using non-overlapping channels prevents co-channel and adjacent-channel interference among neighboring access points.

Key Concept

2.4 GHz Non-Overlapping Wi-Fi Channels
Estimated Time:45s
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Topics

Wired and Wireless Network Issues

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