单项选择题
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
WhatdoesaCiscoUnifiedWirelessIPPhone7921Gdeploymentrequ...
单项选择题What does a Cisco Unified Wireless IP Phone 7921G deployment require（）？
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
WhichantennagenerallyhasthenarrowestfirstFresnelzoneinb...
单项选择题Which antenna generally has the narrowest first Fresnel zone in both the horizontal and verticalplanes？（）
A.omnidirectional B.patch C.Yagi D.sector E.parabolic dish
WhichtwomethodscanbeusedtopreventorreduceRFIfromcolocat...
多项选择题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
