單項選擇題

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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單項選擇題

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

單項選擇題

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

What will cause wireless voice devices to perform poorly？（）

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What does a Cisco Unified Wireless IP Phone 7921G deployment require（）？

Which antenna generally has the narrowest first Fresnel zone in both the horizontal and verticalplanes？（）

Which antenna generally has the narrowest first Fresnel zone in both the horizontal and verticalplanes？（）