WhichstatementaboutimplementingtheCiscoIPv6providerEdgeRouteroverMPLSistrue？（）
A. 6PEfeatureissupportedovertunnelsotherthanRSVP-TEtunnels
B. CoreMPLSroutersaresupportingIPv6ONLY
C. 6PEfeatureisnotsupportedovertunnelsotherthanRSVP-TEtunnels
D. CoreMPLSroutersaresupportingIPv4only
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Whichtwostatementsabout10GigabitEthernet（10GE）aretrue？（）
A. 10GigabitEthernetdoesnotsupportVLANdefinition
B. 10GigabitEthernetsupportsfullduplexlinks，butdoesnotsupporthalfduplexlinks
C. 10GigabitEthernetsupportsunshieldedorshieldedtwisted-paircableconnections
D. 10GigabitEthernetsupportsCarrierSenseMultipleAccesswithCollisionDetection（CSMA/CD）
E. 10GigabitEthernetsupportsopticalfiberconnectionsinsinglemodeonly.Muftimodeisnotsupported
WhichstatementisFALSEconcerningConcatenation？（）
A. ItallowsITCMtosendmultipleupstreampacketsinonesinglelargeburst.
B. Itreducesupstreamdatathroughput.
C. Itcanbeenabled/disabledfromCMTSonperupstreamportbasisifdesired
D. Concatenationactivityonaninterfacecanbecheckedbytheshowcontrollercounterscommand
WhichtwostatementsaboutVPLSaretrue？（）
A. Thereisafullmeshofpseudowires.
B. Thereisapartialmeshofpseudowires.
C. OnlyL2TPv3canbeusedforpseudowireestablishment.
D. Thereissplit-horizontoavoidloops.
Whatarethreefeaturesofvoicetrafficonanetwork？（）
A. bursty
B. constant
C. bandwidthintensive
D. smallpacketsizes
E. time-sensitive
F. retransmittable
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