Certified Wireless Network Administrator (CWNA) Practice Test

The wireless standard that utilizes both the 2.4 GHz and 5 GHz frequency bands is 802.11n. This standard introduced the ability to operate on dual frequencies, allowing for greater flexibility in wireless networking. The 802.11n standard, which was widely adopted due to its improvements in speed and range compared to previous standards, can provide better performance in environments that may experience interference or require more bandwidth.

While other standards, such as 802.11a and 802.11ac, operate at specific frequencies—802.11a is limited to 5 GHz and 802.11ac primarily focuses on 5 GHz as well—the 802.11n standard is distinct because it accommodates both frequency ranges, giving devices the ability to connect using the band that is less congested or offers better coverage at a given moment. This dual-band capability is one of the key features that made 802.11n popular among users looking for reliable wireless connections in a variety of settings.