A neighboring Wi-Fi network has been set up at 2.412 GHz.
Which of the following options minimizes network interference?”
The correct answer and explanation is :
The correct answer to minimize network interference when a neighboring Wi-Fi network is set up at 2.412 GHz is to use channels 1, 6, or 11.
Explanation:
Wi-Fi networks typically operate in the 2.4 GHz band, which is divided into multiple channels. These channels are overlapping, meaning that when two Wi-Fi networks use adjacent channels, they may interfere with each other, leading to reduced performance and connection issues. Understanding this overlap is key to minimizing interference.
In the 2.4 GHz range, channels 1 through 11 are commonly used in the United States (with some variations in other regions). Each channel occupies a width of 20 MHz, but the channels themselves are spaced only 5 MHz apart. This means that the channels overlap significantly, and if two networks use adjacent or nearby channels, they can interfere with each other.
Why Channels 1, 6, and 11?
Channels 1, 6, and 11 are the only non-overlapping channels in the 2.4 GHz Wi-Fi spectrum. Here’s why:
- Channel 1 spans from 2.401 GHz to 2.421 GHz.
- Channel 6 spans from 2.426 GHz to 2.446 GHz.
- Channel 11 spans from 2.451 GHz to 2.471 GHz.
These channels are spaced 25 MHz apart, which is enough to avoid overlap. By using these channels, you minimize the chances of interference with other networks, as each of these channels operates within its own isolated frequency band.
If your neighboring Wi-Fi network is set to 2.412 GHz, which corresponds to Channel 3 (typically ranging from 2.406 GHz to 2.426 GHz), it overlaps with both Channel 1 and Channel 6. If you select either Channel 1 or Channel 6 for your network, you’ll avoid significant interference. However, using Channel 6 would be preferable in this case, as it’s a common choice that provides more robust performance.
Thus, using Channel 6 or Channel 11 minimizes interference with a neighboring network set to 2.412 GHz.