单项选择题
WhenplanningforvoicedeploymentswiththeCiscoUnifiedWirelessIPPhone7921GhandsetinamultifloorbuildingwithaWLANthatoperatesatan11MB/sdatarate，howmanydecibelsreferencedto1milliwattofsame-channelseparationarerecommendedbetweenfloors？（）
A.13dBm
B.19dBm
C.25dBm
D.31dBm
- A.13dBm
B.19dBm
C.25dBm
D.31dBm
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Howcanmobiledevicesandwirelessnetworksbesecured？（）
A.bysecurelydeployingnewapplicationswithappropriateperformancelevels
B.byprovidingsecuritythatisbasedonamultilayer，system-levelapproach
C.bylookingsubjectivelyatnetworktrafficforabnormalflows
D.byrequiringahost-basedhardwareapplication -
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AcomputerisconnectedtothenetworkthroughaNIC，whichhasauniqueassignmentthatiscalledtheEthernetMACaddress.WhichlayeroftheOSImodeldoestheMACaddressusetocommunicatewiththenetwork？（）
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WhichCiscoCatalystswitchesfitintheaccessarea？（）
A.CiscoCatalyst2900Series，Catalyst7300Series，andCatalyst8000Series
B.CiscoCatalyst2900Series，Catalyst3700Series，andCatalystSeries
C.CiscoCatalyst2700Series，Catalyst7300Series，andCatalyst8000Series
D.CiscoCatalyst2700Series，Catalyst3700Series，andCatalyst4500Series
