单项选择题

Whatwillcausewirelessvoicedevicestoperformpoorly？（）……

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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热门试题

单项选择题WhatdoesaCiscoUnifiedWirelessIPPhone7921Gdeploymentrequire（）？

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

单项选择题WhichantennagenerallyhasthenarrowestfirstFresnelzoneinboththehorizontalandverticalplanes？（）

A.omnidirectional
B.patch
C.Yagi
D.sector
E.parabolic dish

多项选择题WhichtwomethodscanbeusedtopreventorreduceRFIfromcolocateddirectionalantennas（）

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

单项选择题Ciscorecommendsadecibelreferencedto1milliwattsignallevelforthecoveragecelledgeatthepredetermineddataratethatisneededtosupporttheVoWLANdeviceandcallcapacityrequirements.WhatisthatsignallevelvalueforCiscoUnifiedWirelessIPPhones7920，7921G，and7925G？（）

A.-65 dBm
B.-67 dBm
C.-69 dBm
D.-70 dBm

多项选择题WhichthreeformatscanbeusedtoimportfloormapsinCiscoWCSv5.2？（）

A.PNG
B.JPEG
C.GIF
D.BMP
E.PICT
F.TIFF