To determine the coverage area field strength in field strength requirements is to adjust via AP sending power, about the requirements which the netiquette needs to consider in advance, which of the following statement is correct?

The basic requirement of WLAN networking needs the bandwidth requirements, covering target, covering type, field strength requirements and distribution modes.

To determine the coverage area field strength in field strength requirements is to adjust via AP sending power, about the requirements which the netiquette needs to consider in advance, which of the following statement is correct? (Multiple Choice)
A . The field strength requirement in key area is that the users’ main Internet area can be controlled at -40~-80dBm, the power is too strong easily leading to receiving overload, power is too weak leading to the connection rate decline.
B . Interference field strength requirement is the same frequency interference in the same area is not greater than -80dBm
C . Edge field level combination of receiver sensitivity and edge bandwidth requirements to determine the general choice -75dBm or more
D . The out-releasing field strength of the system cannot be too much, the field strength of the building periphery 10m cannot be greater than -90dBm

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Answer: BCD