A.ItallowsITCMtosendmultipleupstreampacketsinonesinglelargeburst.
B.Itreducesupstreamdatathroughput.
C.Itcanbeenabled/disabledfromCMTSonperupstreamportbasisifdesired
D.Concatenationactivityonaninterfacecanbecheckedbytheshowcontrollercounterscommand
正确答案:参考B



