單項(xiàng)選擇題What will cause wireless voice devices to perform poorly?()

A.average signal strength that is greater than -67 dBi
B.cell overlap of 15 to 20 percent
C.uneven wireless coverage
D.absence of coverage holes


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A.more access points than a data network
B.fewer access points than a data network
C.less SNR than a data network
D.specific relative access point placement

3.多項(xiàng)選擇題Which two methods can be used to prevent or reduce RFI from colocated directional antennas()

A.Alternate polarization between colocated antennas
B.Cross-polarize antennas between endpoints
C.Install an RF-shielded box around the antennas
D.Increase the distance between the antennas

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