Which of the following is a common standard for Wi-Fi?

The option identifying IEEE 802.11b/g/n/ac/ax as a common standard for Wi-Fi is indeed correct. This answer encompasses the various Wi-Fi standards that have evolved over time, providing insight into both the capabilities and improvements in performance and speed with each iteration.

IEEE 802.11b was one of the first widely used standards, providing a maximum speed of 11 Mbps. As technology advanced, newer standards like 802.11g introduced backward compatibility with 802.11b while offering higher speeds. The 802.11n standard further enhanced performance through MIMO (Multiple Input Multiple Output) technology, achieving significantly higher speeds and better range. The more recent standards, 802.11ac and 802.11ax (also known as Wi-Fi 5 and Wi-Fi 6, respectively), continue to build on this framework, introducing features that support higher data rates, improved capacity, and better performance in congested environments.

This suite of standards reflects the ongoing development within Wi-Fi technology, making it necessary for devices to support multiple standards to ensure compatibility and performance. Understanding the range of Wi-Fi standards and how they interoperate is crucial for anyone involved in telecommunications and wireless communication practices.