802.11n combined with the 2.4GHz frequency offers the greatest compatibility for IoT devices.
802.11n: Operates on both 2.4GHz and 5GHz bands, offering backward compatibility with older standards like 802.11b/g.
2.4GHz: Has longer range and better penetration through walls, making it ideal for IoT devices that are spread across large areas.
Why Not A (A and 5GHz): 802.11a is outdated and supports only 5GHz, offering limited compatibility.
Why Not B (Band 2.4GHz): A frequency alone isn’t a standard; 802.11n paired with 2.4GHz provides a more complete solution.
Why Not C (G and 5GHz): 802.11g supports only 2.4GHz, not 5GHz, and is slower compared to 802.11n.
CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.3, wireless networking standards and frequencies.
