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D.集团短信
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单项选择题11g的调制方式是什么？（）

A.CCK/DSSS
B.OFDM
C.CCK/OFDM
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单项选择题InFrameRelay，FECNmessagesindicatingcongestionaresentorreceivedbywhichoffollowing？（）

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B.Receivedbythesender
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单项选择题Inaframe，theMPLSlabelisimposed（）.

A.AftertheLayer3headerandbeforeLayer2header
B.AftertheLayer2headerandbeforeLayer3header
C.WithintheLayer3header
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A.thestabilityoftheconnectionhasbeenaconcern.inordertoprovidemoreinformationtoEIGRPRegardingthisinterface，Youwishtoincorporatethe'Reliability'costmetricintheEIGRPCalculationwiththecommandmetricweights10101.WhatimpactwillthismodificationontheremotesiterouterhaveforotherexistingEIGRPneighborshipsfromthesameEIGRPDomain？（）
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B.ExistingNeighborswillusethenewmetricafterclearingtheEIGRPNeighbors.
C.ExistingNeighborswillresync，maintainingtheneighborrelationship
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单项选择题HowisRPFusedinmulticastrouting？（）

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B.topreventPIMpacketsfromlooping
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