单项选择题
A. prioritization
B. classification
C. fragmentation
D. traffic shaping
单项选择题 WhichQoSrequirementappliestostreamingvideotraffic？（）
单项选择题 TheCiscoMDS9000SeriesMultilayerSANSwitchescanhelplowerthetotalcostofownershipofthemostdemandingstorageenvironments.Bycombiningarobustandflexiblehardwarearchitecturewithmultiplelayersofnetworkandstorage-managementintelligence，theCiscoMDS 9000Serieshelpsyoubuildhighlyavailable，scalablestoragenetworkswithadvancedsecurityandunifiedmanagement.WhatmethoddoestheCiscoMDS9000Seriesusetosupporttrunking？（）
多项选择题 WhichtwoarecharacteristicsofRSVP？（）