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

The statement that WiFi and cellular networks use the same set of frequencies is not true. WiFi operates primarily in the unlicensed spectrum bands known as the 2.4 GHz and 5 GHz bands, while cellular networks operate in licensed spectrum frequencies that vary by region and carrier. Thus, they do not share the same frequencies, which distinctly separate the two types of networks.

In addition, it's important to consider that WiFi, as a type of Wireless Local Area Network (WLAN), is specifically designed for local area coverage, allowing devices in close proximity to connect and communicate wirelessly. The unlicensed nature of the WiFi spectrum is also a key characteristic, as it helps facilitate widespread use without the need for individual licenses, contrasting with cellular networks that require licensing from regulatory bodies.