Which of the following statements is NOT true about WiFi networks?

The statement that WiFi operates in an unlicensed spectrum band is indeed true. WiFi technology typically utilizes the 2.4 GHz and 5 GHz frequency bands, which fall within the unlicensed spectrum. This means that these frequencies can be used by anyone without a special license, differentiating them from cellular networks that operate on licensed frequencies.

The assertion that WiFi and cellular networks use the same set of frequencies is also correct, as cellular networks operate primarily in different frequency bands that are carefully licensed for exclusive use.

Moreover, WiFi is classified as a Wireless Local Area Network (WLAN), which is accurate since it connects devices in a localized area, such as homes or offices, allowing for wireless internet access.

Given these points, while evaluating the statements, the correct answer clearly identifies that all the listed statements pertaining to WiFi networks are indeed accurate. Thus, the notion that any of them are not true is unfounded.