Site adjacent to a large airport experiences frequent 5 GHz channel changes due to radar. Which two actions address radar-triggered channel switching?

Radar uses specific frequencies within the 5 GHz band, primarily in the UNII-2 (channels 52-64) and Extended UNII-2 (channels 100-144) sub-bands. Dynamic Frequency Selection (DFS) is a mechanism that detects radar signals and forces Wi-Fi access points to switch channels to avoid interference. While DFS is designed to prevent interference, frequent radar detection leads to constant channel changes, disrupting Wi-Fi service. To mitigate this, you can either remove these radar-prone channels (UNII-2 and Extended UNII-2) from the available 5 GHz channel list or disable DFS entirely. Disabling DFS channels prevents the AP from using any channels that require DFS, effectively avoiding radar detection and subsequent channel changes. Enabling DFS channels would worsen the problem, as it makes the AP actively use and then switch away from radar-affected channels. Restoring DCA defaults or configuring only UNII-2/Extended UNII-2 channels would not resolve the issue; the former might reintroduce radar-prone channels, and the latter would guarantee constant radar interference.