When did the initial application of the wireless network begin?

Which is the following statement is correct about the introduction of WLAN frequency planning? (Multiple Choice)

What series of switches of Huawei can the Huawei plug-in controller ACU2 board apply for? (Multiple Choice)

The lobe width is a very important parameter commonly used in directional antennas. It refers to the angle between the antenna and the radiation pattern below the peak dB The width.

The AC6605 of the Huawei box-type wireless controller supports 24 PoE interfaces. When the WLAN is connected to the network, it can directly supply power to the AP connected to the AC.