题目内容

YourcompanyisresearchinganewapplicationthatrunsoverIPv6，butpartofitmuststillhaveIPv4support.YourcompanyusesatraditionalIPv4network.YourplanisnottorunIPv6overthewholenetwork，buttosegmentpartsofthenetworkoreventooperatesimultaneouslywithIPv6andIPv4.YoumustmakeabriefpresentationaboutIPv6technologytotheboardoftechnicaldirectors.Whichthreeoftheseitemscouldbepartofyourpresentation？（）

A. TunnelIPv6overIPv4toconnectfar-endIPv6networks.
B. ExplainwhyconfiguringIPv4andIPv6atthesametimeoverthesameLANinterfaceisnotpossible.
C. ExplainwhyconfiguringIPv4andIPv6atthesametimeoverthesameLANinterfaceispossible.
D. WhatisthemeaningofEUI-64andhowdoesitwork？
E. TunnelIPv4overIPv6toconnectfar-endIPv4networks.

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WhichtwostatementsaboutMPLSpoint-to-multipointtrafficengineering（P2MPTE）aretrue？（）

A. P2MPTEusesanOSPFextensionthatisdifferentfromtheOSPFextensionthatisusedinP2PTE
B. LoosepathisnotsupportedinP2MPTE
C. MultipleIPmulticastgroupscanmaptooneP2MPtunnel
D. AffinityisnotsupportedinP2MPTE
E. P2MPTEusesConstrainedShortestPathFirst（CSPF）tocalculatepaths

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Whentroubleshootinganetwork，theoutputofthecommandshowinterfacesindicatesalargenumberofrunts.Whatisarunt？（）

A. thenumberofpacketsthatarediscardedbecausetheyexceedthemaximumpacketsizeofthemedium
B. errorscreatedwhentheCRCgeneratedbytheoriginatingLANstationorfar-enddevicedoesnotmatchthechecksumcalculatedfromthedatareceived.
C. thenumberofpacketsthatarediscardedbecausetheyaresmallerthantheminimumpacketsizeofthemedium
D. thenumberofreceivedpacketsthatwereignoredbytheinterfacebecausetheinterfacehardwareranlowoninternalbuffers
E. thenumberoftimesthattheinterfacerequestedanotherinterfacewithintheroutertoslowdown

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火焰原子吸收光度法测定水中镍时，使用（）火焰。

A. 空气-乙炔贫燃
B. 空气-乙炔富燃
C. 氧化亚氮-乙炔
D. 空气-氩气

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石墨炉原子吸收光度法测定水中铟时选用（）nm线。

A. 303.9
B. 325.6
C. 311.0
D. 324.7

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