Which wireless modes are supported by the 5GHz band?

The 5GHz band supports specific wireless modes that are designed to take advantage of its characteristics, such as reduced interference and higher throughput. The correct answer includes 802.11a, 802.11n, and 802.11ac, which are specifically designed to operate in the 5GHz band.

802.11a was the first standard to utilize the 5GHz band, offering significant advantages over the older 2.4GHz band, including less congestion and higher data rates. Following this, 802.11n introduced both 2.4GHz and 5GHz operation, allowing for improved speed and range through technologies like MIMO (Multiple Input Multiple Output). Finally, 802.11ac, the evolution of 802.11n, operates solely in the 5GHz band, providing even higher data rates and more efficient use of bandwidth.

The inclusion of these three standards in the correct answer reflects their compatibility with the 5GHz frequency, maximizing performance in environments where higher bandwidth and reduced interference are critical.