802.11 Frequency Ranges
Question
A technician is installing a high-density wireless network and wants to use an available frequency that supports the maximum number of channels to reduce interference.
Which of the following standard 802.11 frequency ranges should the technician look for while reviewing WAP specifications?
Answers
Explanations
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A. B. C. D.B.
The correct answer is B. 5GHz.
The 802.11 standard specifies the frequency ranges that can be used for wireless communication. These frequencies are divided into several bands, each with a different range of available channels.
The 2.4GHz band, which is the most commonly used for Wi-Fi networks, has only three non-overlapping channels (1, 6, and 11). This means that if multiple wireless access points (WAPs) are installed in close proximity to each other, they can interfere with each other, which can cause network performance to suffer.
On the other hand, the 5GHz band has a much wider range of available channels, with some countries allowing up to 24 non-overlapping channels. This makes it an ideal choice for high-density wireless networks, where many WAPs need to be installed in close proximity to each other.
The 6GHz band is a relatively new frequency range that was added in 2021, and it is not widely supported by devices or access points yet.
The 900MHz band is not typically used for Wi-Fi networks, as it has a lower data rate and is more susceptible to interference than higher frequency bands.
Therefore, in this case, the technician should look for WAPs that support the 5GHz frequency range to maximize the number of available channels and reduce interference in the high-density wireless network.
