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单项选择题

AnewBackupConnectionisbeingdeployedonaremotesiterouter.thestabilityoftheconnectionhasbeenaconcern.inordertoprovidemoreinformationtoEIGRPRegardingthisinterface，Youwishtoincorporatethe'Reliability'costmetricintheEIGRPCalculationwiththecommandmetricweights10101.WhatimpactwillthismodificationontheremotesiterouterhaveforotherexistingEIGRPneighborshipsfromthesameEIGRPDomain？（）
A.ExistingNeighborswillimmediatelybeginusingthenewmetric.
B.ExistingNeighborswillusethenewmetricafterclearingtheEIGRPNeighbors.
C.ExistingNeighborswillresync，maintainingtheneighborrelationship
D.Allecistingneighborrelationshipswillgodown

A.thestabilityoftheconnectionhasbeenaconcern.inordertoprovidemoreinformationtoEIGRPRegardingthisinterface，Youwishtoincorporatethe'Reliability'costmetricintheEIGRPCalculationwiththecommandmetricweights10101.WhatimpactwillthismodificationontheremotesiterouterhaveforotherexistingEIGRPneighborshipsfromthesameEIGRPDomain？（）
A.ExistingNeighborswillimmediatelybeginusingthenewmetric.
B.ExistingNeighborswillusethenewmetricafterclearingtheEIGRPNeighbors.
C.ExistingNeighborswillresync，maintainingtheneighborrelationship
D.Allecistingneighborrelationshipswillgodown

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单项选择题HowisRPFusedinmulticastrouting？（）

A.topreventmulticastpacketsfromlooping
B.topreventPIMpacketsfromlooping
C.toinstructPIMwheretosenda（*，G）or（S，G）joinmessage
D.topreventmulticastpacketsfromloopingandtoinstructPIMwheretosenda（*，G）or（S，G）joinmessage

单项选择题WhichstatementistrueaboutaSmurfattack？（）

A.Itsendspingrequestsinsegmentsofaninvalidsize
B.ItinterceptsthethirdstepinaTCPthree-wayhandshaketohijackasession
C.Itsendspingrequeststoasubnet，requestingthatdevicesonthatsubnetsendpingrepliestoatargetsystem
D.ItusesTrojanhorseapplicationstocreateadistributedcollectionof"zombie"computers，whichcanbeusedtolaunchacoordinatedDDoSattack

单项选择题ArouterhasbeenconfiguredwithanEIGRPvarianceof3.Whichofthefollowingstatementsistrue？（）

A.AnerrorwillresultbecausearoutercannotbeconfiguredwithanEIGRPvarianceof3becausethemaximumvariancenumberis2
B.Thesuccessorroutewillendupintheroutingtable，andsowillanyroutewithametricatmostthreetimesgreaterthanthevalueofthesuccessor’smetric
C.EIGRPwillonlyadvertiseroutesthatarewithinthreehopsofthecurrentrouter
D.Thesuccessorroutewillendupintheroutingtable，andsowillanyroutewithametricatleastonethirdthevalueofthesuccessor’smetric
E.Thebestthreerouteswithequalcostpathswillendupintheroutingtable
F.Thesuccessorroutewillbeanyroutewiththreetimesthevalueoftheadvertiseddistance

单项选择题WhichstatementaboutNPIVistrue？（）

A.NPIVprovidesameanstoassignmultipleFibreChannelIDstoasingleN-port.
B.NPIVcanbeenabledonaper-VSANbasis.
C.NPIVrequiresa"writeerase"andthenreloadtheswitchinordertocomeupintoNPIVmode.
D.NPIVisaCiscoproprietaryfeatureandassuchworksonlybetweentwoCiscoswitches.
E.NPIVmustnotbeenabledonaswitchthatisalsorunningN-portvirtualization.

单项选择题ACiscoswitchhasthisconfigurationforaport&e