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Difficulty: EasyWireless Network Deployment and Standards

During a routine wireless inspection, a technician discovers that an access point positioned between two existing access points operating on channels 1 and 6 has been configured to use channel 4, resulting in severe adjacent-channel interference. Which channel should be assigned to this access point to ensure all three access points use non-overlapping channels in the 2.4 GHz band?

  1. A
    Channel 2
  2. B
    Channel 5
  3. Channel 11Answer
  4. D
    Channel 7

Answer

Channel 11 is the correct choice because channels 1, 6, and 11 are the standard non-overlapping channels in the 2.4 GHz wireless spectrum for North America.
In the 2.4 GHz Wi-Fi spectrum, channels 1, 6, and 11 are the standard non-overlapping channels available in North America. Because the neighboring access points are already deployed on channels 1 and 6, configuring the intermediate access point to channel 11 eliminates adjacent-channel interference.

Step-by-Step Solution

1
Identify the standard non-overlapping 2.4 GHz channels in North America.
The primary non-overlapping channels are channels 1, 6, and 11.
Each standard 2.4 GHz Wi-Fi channel occupies 22 MHz of bandwidth with 5 MHz spacing between channel centers, requiring a minimum gap of 5 channels to avoid spectral overlap.
2
Determine which non-overlapping channel remains unused among the three access points.
With access points already operating on channels 1 and 6, channel 11 is the only remaining non-overlapping option.
Selecting channel 11 isolates the access point's frequency band from channels 1 and 6, resolving adjacent-channel interference.

Key Concept

2.4 GHz Wireless Non-Overlapping Channel Assignment
Estimated Time:45s
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Topics

Wireless Network Deployment and Standards

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