单项选择题
A. includes all modules needed to meet any network design
B. defines flexible boundaries between modules for scalability requirements
C. clearly defines module boundaries and demarcation points to identify where traffic is
D. requires specific core， distribution， and access layer requirements to match the model
单项选择题 WhatisthefirststepthatyouwoulduseCiscoProductAdvisorforwhenselectingarouterforan Edgesolution？（）
单项选择题 CaptainMarion’sVideographydeliversInternetdigitalvideousing9MPEGvideoencodersandastatisticalmultiplexer.Channelsarepackedintoa6-MHzchannelbandwidth.TheMPEGmultiplexemonitorsandallocatestheappropriatebandwidth.Themultiplexermeasuresavailable bandwidthandfeedsbacksignalingtotheMPEGencoders.Codingratesarethenincreasedordecreased.Packetgenerationfromeachinputsourceiscontrolledsuchthatnopacketsaredroppedandnoextranullpacketscanbegenerated.Thesebandwidthandtrafficrequirementsworkbestwithwhichmodeofvideodelivery？（）
多项选择题 YouarethenetworkconsultantfromCisco.com.Pleasepointouttwostatementscorrectly describeanIPSdevice？（）