高级网络工程师招聘试题

网络工程师姓名：高级网络工程师招聘试题试题说明：本卷共有30道选择题，请在答题卡中对应填写每道试题的答案。试题如下：Apacketisdestinedfor172.16.1.1.WhichofthefollowingrouteswillbeselectedasthebestpathA.Defaultstaticroutefor0.0.0.0/0withadministrativedistance1B.RIPreceivedroutefor172.16.1.0/30withadministrativedistance120C.BGPreceivedroutefor172.16.1.0/16withadministrativedistance20D.OSPFreceivedroutefor172.16.1.0/28withadministrativedistance110DuringthefinalstagesofOSPFconvergence,whencantheOSPFrouterbegintosenduserdata?A.FullB.ExchangeC.2-wayD.ExstartE.InitF.LoadingwhatprotocoltransportdoesBGPuse?A.BGPisconnection-orientedusingTCPB.BGPisconnection-lessusingUDPC.BGPisconnection-lessusingTCPD.BGPisconnection-orientedusingUDPWhatistheinvertedwildcardmaskof/26?A.192.255.255.255B.63.255.255.255C.0.0.0.192D.0.0.0.63WhichofthebelowcorrectlydescribetheBGPregularexpression'^200_'?A.MatchstringswhichincludeAS200B.LocalASonlyC.MatchstringsoriginatingfromAS200D.MatchstringreceivedfromAS200WhichofthefollowingisfalseregardingroutersrunninginternalBGP?A.TheydonothavetobedirectlyconnectedB.RoutersarerunningIBGPwhentwoBGPspeakingroutersareindifferentAS'sC.RoutersarerunningIBGPwhentowBGPspeakingroutersareinthesameASD.TheymustformaTCPport179connectionwitheachother.WhichwayscanBGPdiscoverneighbors?A.BroadcastsonlyB.DuringaBGPelectionC.StaticallydefinedneighborsD.ExplorerpacketsHowdoesarouterforwardadatagramtothenexthopaddress?A.ArouterrewritestheMACaddressofthedatagramtocorrespondtothenexthop.B.ArouterrewritestheIPaddressofthedatagramtocorrespondtothenexthop.C.ArouterrewritestheMACandIPaddressesofthedatagramtocorrespondtothenexthopD.Aroutersimplyforwardsthedatagramouttheappropriateinterfacewithoutrewriting.WhichofthefollowingBGPAttributescanbeusedtohinttoexternalneighborsaboutthepreferredpathintoanAS?A.MEDB.WeightC.NextHopD.LocalPreferenceWhichofthefollowingBGPrulesstatesthat"IfyourautonomoussystemispassingtrafficfromanotherAStoathirdAS,BGPshouldnotadvertisearoutebeforeallroutersinyourAShavelearnedabouttherouteviaIGP".A.SynchronizationB.CommunityC.LocalPreferenceD.AggreagtionWhichofthefollowingisbestdescribedbyagroupofBGPneighborsconfiguredwiththesameupdatepolicies?A.ASB.ConfederationC.CommunityD.PeerGroupWhichofthefollowinglimitsthepracticalsizeofaLANorVLAN?A.thespeedoftechnologiestolinknetworksindifferentbuildingsB.hostperformanceinanenvironmentwithmanybroadcastsC.theaddressspaceofasubnetD.thenumberofportsonaswitchWhichofthefollowingistrueaboutVTP?IfyouenableVTPwithoutspecifyingthemode,theswitchwillbeVTPtransparent.YoumaycreateVLANsonaVTPclient,buttheywon'tpropagatetoanyoterswitch.Addingaservertoadomainwithahighconfigurationrevisionnumberstoredinnon-volatilememorycanalterordeleteVLANsVTPversion1and2switchescanco-existandinteroperatewithinanetworkSpanningtreeprotocolputsaportinoneof5states.Whichofthefollowingistrueoftheblockingstate?A.Noframesareforwarded.LearningAddresses.B.Framesareforwarded.Learningaddresses.C.Noframesareforwarded.NoBPDU'sareheardD.Noframesareforwarded.BPDU'sareheardUserscomplainthatwhentheyboottheirdesktopmachines,ittakestoolongbeforetheswitchednetworkprovidesconnectivity.Whatshouldyoudo?A.Enableuplinkfastonuserports.B.Turnonbackbonefast.C.Turnoffspanningtree.D.Enableportfastonuserports.WhatisNOTavalidcauseofabadqualityofservice?A.ToomuchvariationindelayB.ArouterhasgonedownC.LackofsufficientbandwidthD.ToomanypackeddropsE.ToomuchdelayWhatisaneffectofdisablingTTLpropagationintotheMPLSdomain?A.ItassistswithlooppreventionB.IthidesthecoreroutersintheMPLSdomainfromthenonMPLSdomainC.ItallowsthesettingupofexplicitLSP'sthataresuboptimalD.ItstopstraceroutefromoperatingStationAistransmittingdatatostationB,andexpectsanacknowledgmentafterevery400bytes.Aftertrasmittingdataforawhile,thetwostationsdeterminethelineisreliableandchangetoexpectingandacknowledgementevery600bytes.Thisisanexampleof:A.CountdowntimesB.BECNC.SlidingWindowsD.SplitHorizonWhichsubnetisthehost200.1.1.99/27on?A.200.1.1.96B.200.1.1.64C.200.1.1.16D.200.1.1.32下面那个PFC是基于缓存转发的?A.7609/6509PFC1B.7609/6509PFC2C.7609/6509PFC3下面7609那个配置不支持MPLS?A.Sup2+OSMB.Sup7203AC.Sup7203BD.Sup7203BXL那种路由协议不支持思科不间断转发(NSF)?A.EIGRPB.OSPFC.ISISD.BGP在配置BGP输入、输出策略时，哪个不能同prefix-list同时配置?A.route-mapB.distribute-listC.filter-list思科GSR系列路由器使用那种队列技术?A.WFQB.WRRC.PQD.MDRR思科7609Sup720引擎有几个可用的GE端口?A.4B.3C.2D.1下面哪个系列设备不支持双引擎？A.思科7300系列路由器B.思科7200系列路由器C.思科6500系列交换机D.思科4500系列交换机思科GSR系列路由器SPA接口处理器SIP-600最多支持多少个线速GE端口?A.40B.30C.20D.10下面那款产品不支持分布式转发？A.GSR12016B.ESR10008C.7609D.7513思科GSR12816的交换矩阵为:A.80GbpsB.320GbpsC.640GbpsD.1280Gbps思科