A.CCK

A.Prevent electromagnetic interference

B.Prevent water from entering each joint connector and penetrating into the feeder cable, causing damage to the feeder cable.

C.Prevent the connector from being damaged by electric shock

D.Prevent partial disconnection of each connector

A.[H3C] wlan ap ap1 radio 1 channel 6

B.[H3C] wlan ap ap1 radio 1 [H3C-wlan-ap-ap1-radio-1] channel 6

C.[H3C] wlan ap ap1 [H3C-wlan-ap-ap1] radio 1 [H3C-wlan-ap-ap1-radio-1] channel 6

D.[H3C] wlan ap ap1 [H3C-wlan-ap-ap1] radio 1 channel 6

A.The frequency bands of WLAN and PHS are similar, attenuation in the air, equipment power is the same, and coverage is similar, which provides favorable conditions for the co-site construction of WLAN and PHS.

B.Use WLAN dual-frequency combiner to expand capacity, fast implementation, low cost, can quickly double the number of access users in hot spots, and facilitate the deployment of functions such as load balancing.

C.In the case of multi-floor coverage, the channel setting should consider the signal interference in the three-dimensional space.

D.The function of isolation between users can reduce the influence of broadcast messages and traffic between users on the network, and at the same time can avoid some ARP attacks, making the wireless network stable and safe to use.

A.True

B.False