Exam 220-1101 topic 1 question 263 discussion

802.11 ax is a wireless networking protocol that utilizes the 5.0GHz frequency and has the best speed and reception among the options given. 802.11 ax offers higher data rates, lower latency, increased capacity, and improved power efficiency than previous protocols. It is also known as Wi-Fi 6 or High Efficiency Wireless (HEW). 802.11a also uses the 5.0GHz frequency, but it is an older protocol that has lower speed and reception than 802.11 ax. 802.11b/g/n use the 2.4GHz frequency, which is more crowded and prone to interference than the 5.0GHz frequency. 802.11n can use both frequencies, but it is also slower and less efficient than 802.11 ax. Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 82)

Obvious, no?

B. 802.11ax Explanation: Among the options provided, 802.11ax (Option B) is the Wi-Fi protocol that utilizes the 5.0GHz frequency and offers the best speed and reception. Here's a brief overview of each option: 802.11a (Option A): Operates in the 5.0GHz frequency band and provides good data rates but is an older standard compared to 802.11ax. 802.11ax (Option B): Also known as Wi-Fi 6, 802.11ax operates in both the 2.4GHz and 5.0GHz bands. It is designed to improve overall network capacity, efficiency, and performance, providing higher speeds and better reception compared to previous standards. 802.11b/g/n (Option C): Operates in the 2.4GHz frequency band. While 802.11n can provide good speeds, it is older compared to 802.11ax. 802.11n (Option D): Operates in both 2.4GHz and 5.0GHz bands. It provides higher data rates than earlier standards like 802.11a/b/g but is not as advanced as 802.11ax.

802.11a: Legacy 5 GHz Wi-Fi 802.11a supported the 5 GHz band and a theoretical maximum speed of 54 Mbps. In the early 2000s, many business/enterprise wireless devices used 802.11a Wi-Fi radios. The 5GHz bandwidths allowed for higher speeds than 802.11b and 2.4 GHz