A.The interference from FM radio is narrowband.

B.The signal of each frequency point in the spectrum analyzer should be a standard sine wave if viewed through an oscilloscope.

C.In theory, white noise affects all frequencies of a radio signal uniformly, while narrowband interference is noise only within a small range of frequencies.

D.There are two common methods for signal analysis: time domain analysis and frequency domain analysis. Time domain analysis is usually viewed with an oscilloscope, while frequency domain analysis is usually viewed with a spectrum analyzer.

A.3.5GHz

B.1.8GHz

C.2.4GHz

D.5GHz

A.PSK authentication occurs after the association is completed, and the authentication and encryption information exchange with the AP is completed through eapol

B.PSK authentication occurs during the authentication process, and the association process starts after the authentication is completed

C.802.1X authentication occurs during the authentication process, and the association process starts after the authentication is completed. The question bank is required for the association process.

D.802.1X authentication occurs after the association is completed, and the authentication and encryption trust interaction with the AP is completed through eapol

A.The high utilization rate of the air interface is equivalent to the high network occupancy rate of the wired network, and the network speed is naturally slow.

B.The air interface is the interface between the mobile terminal and the base station

C.The air interface rate is equivalent to the maximum bandwidth between wireless channels

D.The AP is not connected to the terminal, and the air interface utilization is 0

A.13

B.26

C.5

D.10