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Difficulty: EasyTroubleshooting Wireless Connectivity and Signal Issues

A network technician is resolving high packet retransmission rates caused by adjacent-channel interference on a 2.4 GHz wireless deployment. The current access points were incorrectly configured using overlapping frequencies. Which TWO of the following channels should the technician assign to ensure non-overlapping 2.4 GHz operation? (Select TWO.)

  1. Channel 1Answer
  2. Channel 6Answer
  3. C
    Channel 2
  4. D
    Channel 4

Answer

Channel 1 and Channel 6 are standard non-overlapping channels in the 2.4 GHz spectrum.
In 2.4 GHz Wi-Fi deployments, 20 MHz channels require a 25 MHz center-frequency separation to operate without interference. Channel 1 and Channel 6 (along with Channel 11) fulfill this requirement and provide clean, non-overlapping coverage.

Step-by-Step Solution

1
Identify the 2.4 GHz channel width and total available spectrum
Standard 802.11 2.4 GHz channels use a 20 MHz channel width with 5 MHz spacing between center frequencies.
Channels must be spaced at least 25 MHz apart between center frequencies to prevent spectral overlap.
2
Select the standard non-overlapping channel set
Channels 1, 6, and 11 do not share overlapping frequency ranges.
Choosing Channel 1 and Channel 6 eliminates adjacent-channel interference between neighboring access points.

Key Concept

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

Troubleshooting Wireless Connectivity and Signal Issues

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