单项选择题 Whatistheminimumrecommendeduplink／downlinkspeedtosupportasingleencryptedIPvoiceTeleworkercall?（）

单项选择题 WhatisthemaximumnumberofCTIportsforaCiscoUnifiedContactCenterExpress4.0Standarddeployment?（）

单项选择题 Giventheformula：（FiberAttenuation*Km）+（SpliceAttenuation*ofSplices）+（ConnectorAttenuation*ofConnectors）+（OpticalFiberorOADM）+Buffer（Fiberaging））WithregardtoSONET/SDHopticalcalculations，whatwillthegivenformulaprovide？（）A.fiberlossB.OSNRlevelC.postamplificationD.indexofreflectionE.indexofrefractionF.powerpostamplificationbudget