A.5.725~5.825GHz

B.5.15~5.25GHz

C.5.25~5.35GHz

D.5.725~5.850GHz

A.Encryption type

B.MAC address

C.SSID

D.channel

A.encryption

B.Authentication

C.Control flow

D.System protection

A.When the user performs web authentication, it is triggered by the user's http message after successfully obtaining the IP address; at this time, it is forcibly redirected to the portal server, Go through the certification process

B.WPA2 uses 802.1X authentication

C.WPA only supports TKIP, an encryption technology

D.When the user performs web authentication, it is triggered by the user's http message before the IP address is successfully obtained; at this time, it is forcibly redirected to the portal server, Go through the certification process

A.Gypsum board

B.Brick wall

C.Glass window (colorless)

D.Concrete wall