多项选择题

A. multicast routing uses RPFB. multicast routing is co……

Which two of these are characteristics of multicast routing？（）

A. multicast routing uses RPF
B. multicast routing is connectionless.
C. In multicast routing， the source of a packet is known.
D. When network topologies change， multicast distribution trees are not rebuilt， but use the originalpath
E. Multicast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destination

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热门试题

多项选择题WhichtwoofthefollowingCiscorouterplatformssupportMulticastDistributedFast Switching？（）

A. 3600 series
B. 7200 series with NSE-1
C. 7500 series
D. 12000 series

单项选择题Which routing protocol best fits these requirements？（） - Supported by multiple router vendors - Requires minimum router CPU and memory resources - Uses a simple routing metric - Supports manual or automatic route summarization

A. EIGRP
B. OSPF
C. IS-IS
D. RIPv2

单项选择题Whatisacriteriaoftheenterprisecompositenetworkmodel？（）

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？（）

A. determine types of protocols to be supported
B. determine the environment in which the router will be used
C. select the number of WAN ports required
D. select the number of LAN ports required

单项选择题CaptainMarion’sVideographydeliversInternetdigitalvideousing9MPEGvideoencodersandastatisticalmultiplexer.Channelsarepackedintoa6-MHzchannelbandwidth.TheMPEGmultiplexemonitorsandallocatestheappropriatebandwidth.Themultiplexermeasuresavailable bandwidthandfeedsbacksignalingtotheMPEGencoders.Codingratesarethenincreasedordecreased.Packetgenerationfromeachinputsourceiscontrolledsuchthatnopacketsaredroppedandnoextranullpacketscanbegenerated.Thesebandwidthandtrafficrequirementsworkbestwithwhichmodeofvideodelivery？（）

A. fixed broadcast
B. open looped
C. quality equalization
D. VoD delivery