A network technician is tasked with deploying a new wireless network in a busy office space. The area is heavily congested with existing Wi-Fi networks operating on the 2.4 GHz band. To minimize interference and improve performance using common, widely-supported hardware, which frequency band should the technician primarily utilize?
The correct answer is '5 GHz'. In a crowded wireless environment where the 2.4 GHz band is saturated with signals from other networks and devices like microwaves and Bluetooth, the 5 GHz band is the best choice for deploying a new network. The 5 GHz band offers significantly more non-overlapping channels than the 2.4 GHz band, which drastically reduces co-channel and adjacent-channel interference, leading to better performance and stability. While the 6 GHz band (used by Wi-Fi 6E/7) offers even more channels and less congestion, it requires newer, more expensive client devices and access points, making 5 GHz the most practical and widely-supported choice for an immediate performance boost over 2.4 GHz. The 3.6 GHz frequency is not a standard band for IEEE 802.11 Wi-Fi networks.
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What are the main differences between the 2.4 GHz and 5 GHz frequency bands for Wi-Fi?
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Why is the 6 GHz band not commonly used yet for Wi-Fi?
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What are 'non-overlapping channels,' and why are they important for Wi-Fi performance?