What is a key feature of the 5 GHz frequency band?

The correct choice highlights that the 5 GHz frequency band can support up to 24 non-overlapping channels, making it a significant advantage for wireless networking. This abundance of non-overlapping channels allows for better management of network traffic and reduces the likelihood of interference from other devices operating on similar frequencies.

Unlike the 2.4 GHz band, which only has a limited number of non-overlapping channels—typically three— the 5 GHz band accommodates a larger number of channels. This makes it especially beneficial in dense environments, such as apartment buildings or offices, where many Wi-Fi networks might be in close proximity to one another. The increased number of channels helps to maintain stronger connectivity and faster data rates, as networks can operate on distinct channels without causing interference with one another.

The other options provided do not accurately capture the key feature of the 5 GHz frequency band. There are more than one channel supported, it is not more susceptible to interference from microwaves than other frequencies, and while 40 MHz is a common channel width, the band can also operate at wider widths, including 80 MHz and 160 MHz, providing even greater throughput potential.