220-802 · Question #727
A customer states that their wireless stops working a few times a day. They said the problem started when a new neighbor moved in. Which of the following is the MOST likely cause of the issue?
The correct answer is D. Wireless channels are overlapping. When a new neighbor's wireless router operates on the same channel or an overlapping channel as the customer's router, the two networks interfere with each other - causing intermittent connectivity drops. In the 2.4 GHz band, only channels 1, 6, and 11 are non-overlapping…
Question
A customer states that their wireless stops working a few times a day. They said the problem started when a new neighbor moved in. Which of the following is the MOST likely cause of the issue?
Options
- ANeighbors are using the same encryption.
- BNeighbors are using the same model router.
- CNeighbors have SSID broadcast enabled.
- DWireless channels are overlapping.
How the community answered
(27 responses)- A4% (1)
- B4% (1)
- D93% (25)
Explanation
When a new neighbor's wireless router operates on the same channel or an overlapping channel as the customer's router, the two networks interfere with each other - causing intermittent connectivity drops. In the 2.4 GHz band, only channels 1, 6, and 11 are non-overlapping; nearby routers using adjacent channels (e.g., both on channel 6 or one on 5 and one on 6) create co-channel or adjacent-channel interference. Sharing the same encryption type or router model has no effect on connectivity. Having SSID broadcast enabled does not cause interference.
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