单项选择题

WhichstatementistrueaboutaSmurfattack？（）

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

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热门试题

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

单项选择题720P分辨率品质的2D视频直播对网络带宽需求是( )

A.1Mbps
B.2Mbps
C.5Mbps
D.10Mbps

单项选择题Whichdefinitionbestdescribestheimplementationservicecomponentwithintheimplementphase？Selectexactly1answer（s）fromthefollowing：（）。

A.providingastep-by-stepplanthatdetailstheinstallationandservice-commissiontasksrequiredinordertocreateacontrolled-implementationenvironmentthatemulatesacustomernetwork
B.assessingtheabilityofsitefacilitiestoaccommodateproposedinfrastructurechanges
C.developingandexecutingproof-of-concepttests，validatinghigh-levelinfrastructuredesign，andidentifyinganydesignenhancements
D.installing，configuring，andintegratingsystemscomponentsbasedonanimplementationplandevelopedinearlierphases
E.improvingacustomer’sinfrastructuresecuritysystem