Which two bands, in the 5 GHz band, are home to the DFS channels?

The correct answer highlights the UNII-2 and UNII-2e bands as the specific channels within the 5 GHz band that are associated with Dynamic Frequency Selection (DFS). DFS is a feature designed to minimize interference with radar systems, which operate in the same frequency range.

The UNII-2 band operates between 5.25 GHz and 5.35 GHz, and the UNII-2e band extends from 5.47 GHz to 5.825 GHz. Both of these bands are subject to radar detection, meaning that devices operating in these bands must use DFS to switch channels in the event that radar signals are detected, thus ensuring compliance with regulatory requirements and reducing interference.

The other band options mentioned do not encompass the DFS channels. For instance, while UNII-1 is made up of channels that are free from radar usage and do not require dynamic selection, the UNII-3 band generally relies on non-DFS channels designed for extended range, which are not impacted by radar detection requirements. Hence, the UNII-2 and UNII-2e bands uniquely satisfy the conditions necessary for operating with DFS, making them the correct answer.