Which of the following belong to H3C's optimization technology innovation based on WLAN service application?

Wireless bridges working on different channels can also implement the WDS function.

In order to increase the universal type, the FIT AP version of wireless products will no longer be released separately, but will be included in the package file of the corresponding controller version, such a description is true.

On the H3C wireless controller, the wireless users accessing under the same SSID can be assigned to different VLANs. The specific implementation methods include ___

The construction party reported that the AP could not be successfully registered to the AC after the normal power-on. The possible reasons are ______