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兼职工程师考试题居住地:姓名:选择题分数:问答题分数:一、选择题:下列哪些设备可以用来划分网段:(e)A、hubﻩ B、repeaterﻩ C、switchD、bridge E、routerﻩﻩ F、mediaconverters那些设备可以用来分隔局域网:(c,d)下列那个地址是单播地址:()A、22ﻩ B、FFFF.FFFF.FFFFﻩﻩC、192.168。24.59/30D、255.255.255.255 ﻩﻩ ﻩ E、172.31.128.255/18网线常见线序有直通线、交叉线、反转线三种做法,请把下列设备分类,并指出类别内及类别间连接所使用的线路类型:HUBSWITCHROUTERPCCONSOLEAnswer:1、();2、();3、()对以下路由协议进行分类,并写出各类的路有协议类型:()RIPV1RIPV2IGRPEIGRPOSPFISIS下列那些路由协议支持VLSM和路由汇总:()IGRP RIPV1ﻩﻩRIPV2ﻩ EIGRP ﻩOSPF ﻩISISﻩﻩVTP ﻩCDP下列哪条访问控制列表会阻止所有到10.10.1.0/24网段的telnet请求:()A.access-list15denytelnetany10.10.1.00.0.0.255eq23B.access-list115denyudpany10.10.1.0eqtelnetC.access-list15denytcp10.10.1.0255.255.255.0eqtelnetD.access-list115denytcpany10.10.1.00.0.0.255eq23E.access-list15denyudpany10.10.1.0255.255.255.0eq23WhichIPaddressandwildcardmaskwouldyouuseinyourACLtoblockallthehostsinthesubnet192.168.16.43/28?()A.192.168.16.320.0.0.16B.192.168.16.430.0.0.212C.0.0.0.15D.20.0.0.15E.192.168.16.00.0.0.31F.60.0.0.31AstandardIPaccesslistisappliedtoanEthernetinterfaceofarouter.Whatdoesthisstandardaccesslistfilteron?()A.ThesourceanddestinationaddressesB.ThedestinationportnumberC.ThedestinationaddressD.ThesourceaddressE.AlloftheaboveAbrandnewnetworkapplicationisrequiredfortheAcmeCompany,andtheyareconsideringtheuseofaconnectionlessservice.Whatarethecharacteristicsofaconnectionlessservice?(两项)()A.ItusesaReliabletransportmechanism.B.ItusesaNon-reliabletransportmechanismC.Itislessbandwidth-intensivethanconnectionorientedservicesD.ituseshandshakingTheTestKingnetworkisimplementingdialupservicesfortheirremoteemployees.TestKingusesseveraldifferentLayer3protocolsonwork.Authenticationoftheusersconnectingtothenetworkisrequiredforsecurity.Additionally,someemployeeswillbedialinglongdistanceandwillneedcallbacksupport.Whichprotocolisthebestchoicefortheseremoteaccessservices?()A.802.1B.FramerelayC.HDLCD.PPPE.SLIPF.PAPTestKinghas25computersanddecidestoconnectthenetworktotheInternet.TestKingwouldlikeforallofthecomputerstohaveaccesstotheInternetatthesametime,butTestKingonlyhasfourusablepubliclyroutableIPaddresses.WhatshouldbeconfiguredontheroutersothatallcomputerscanconnecttotheInternetsimultaneously?()A.StaticNATB.GlobalNATC.DynamicNATD.StaticNATwithACLsE.DynamicNATwithoverloadWhichofthefollowingdescribeprivateIPaddresses?(Choosetwo)()A.AddresseschosenbyacompanytocommunicatewiththeInternet.B.AddressesthatcannotberoutedthroughthepublicInternet.C.AddressesthatcanberoutedthroughthepublicInternet.D.Aschemetoconservepublicaddresses.E.AddresseslicensedtoenterpriseorISPsbyanInternetregistryorganization.WhatparametersmustyouspecifywhenyouenableEIGRProuting?()A.Thebroadcastaddress,andASnumberB.ThenetworknumberandASnumberC.EIGRProuting,networknumberandpassiveinterfaceD.EIGRProuting,networknumber,andASWhichofthefollowingaddressescanbeassignedtoahostwhenusingasubnetmaskof255.255.254.0?(Selectthree)()A.B.C.175.33.3.255D.26.35.2.255E.152.135.7.0F.17.35.36.0YouneedtosetthedefaultgatewayofoneofyourTestKingswitches.Whichcommandwillsetthedefaultgatewayto192.168.12.1onaCiscoswitch?()A.Switch(config)#ipdefault-network192.168.12.1B.Switch(config)#iproute-default192.168.12.1C.Switch(config)#ipdefault-gateway192.168.12.1D.Switch(config)#iproute192.168.12.10.0.0.0Whatisthepurposeofthecommandshownbelow?iproute0.0.0.00.0.0.0serial0/0()A.Itconfiguresaroutertosendallpacketsoutinterfaceserial0/0.B.Itconfiguresaroutertoblockroutingupdatesfrombeingsentoutinterfaceserial0/0.C.Itconfiguresarouterasafirewall,blockingallunauthorizedpacketsfromexitingserial0/0.D.Itconfiguresaroutertosendallpacketsforunknowndestinationnetworksoutinterfaceserial0/0.E.Itconfiguresaroutertodropallpacketsforwhichthedestinationnetworkisunknown.AClassCnetworkaddresshasbeensubnettedwitha/27mask.Whichofthefollowingaddressesisabroadcastaddressforoneoftheresultingsubnets?()A.201.57.78.64B.201.57.78.87C.201.57.78.33D.2054E.201.57.78.159F.201.57.78.97在Serialxisdown,lineprotocolisdown的情况下也许是哪些故障导致:()载波没有收到线缆出现问题Clockrate在DCE端没有设立服务提供商导致的ERRORRATE过高在Serialxisdown,lineprotocolisdown的情况下也许是哪些故障导致:()载波没有收到线缆出现问题Clockrate在DCE端没有设立服务提供商导致的ERRORRATE过高请参看一下配置:Figure1-1OutputoftheHDLCshowinterfaceserialCommandTable1-1showstheinterfacestatusconditions,possibleproblemsassociatedwiththeconditions,andsolutionstothoseproblems.Serial0isup,ltocolisupHardwareisMCISerialInternetaddressis131.108.156.98,subnetmaskis255.255.255.240MTU1500bytes,BW1544Kbit,DLY20230usec,rely255/255,load1/255EncapsulationHDLC,loopbacknotset,keepaliveset(10sec)Lastinput0:00:00,output0:00:00,outputhangneverLastclearingof"showinterface"countersneverOutputqueue0/40,5762drops----A;inputqueue0/75,301drops----BFiveminuteinputrate9000bits/sec,16packets/secFiveminuteoutputrate9000bits/sec,17packets/sec5780806packetsinput,bytes,0nobufferReceived757broadcasts,0runts,0giants146124inputerrors----C,87243CRC----D,58857frame----E,0overrun,0ignored,3abort5298821packetsoutput,bytes,0underruns0outputerrors,0collisions,2941interfaceresets,0restarts2carriertransitions通过以上条目判断出:()接口的硬件有问题inputdrop发生在串行接口上也许由于:输入速率超过路由器解决能力。输入和输出队列都属于硬件特性,一般设备不能提供修改。可以用hold-queuein进行调整输出队列有一种对于线路的测试为“环路监测”,根据下图标注出了环路监测是原理,请选出对的的一个:()通过下面显示,最终显示为接口down的因素是由于:()Figure1-2debugserialinterfaceCommandOutputrouter#debugserialinterfaceSerial1:HDLCmyseq636119,mineseen636119,yourseen515032,lineupSerial1:HDLCmyseq636120,mineseen636120,yourseen515033,lineupSerial1:HDLCmyseq636121,mineseen636121,yourseen515034,lineupSerial1:HDLCmyseq636122,mineseen636122,yourseen515035,lineupSerial1:HDLCmyseq636123,mineseen636123,yourseen515036,lineupSerial1:HDLCmyseq636124,mineseen636124,yourseen515037,lineupSerial1:HDLCmyseq636125,mineseen636125,yourseen515038,lineupSerial1:HDLCmyseq636126,mineseen636126,yourseen515039,lineupSerial1:HDLCmyseq636127,mineseen636127,yourseen515040,lineupSerial1:HDLCmyseq636128,mineseen636127,yourseen515041,lineupSerial1:HDLCmyseq636129,mineseen636129,yourseen515042,lineupSerial1:HDLCmyseq636130,mineseen636130,yourseen515043,lineupSerial1:HDLCmyseq636131,mineseen636130,yourseen515044,lineupSerial1:HDLCmyseq636132,mineseen636130,yourseen515045,lineupSerial1:HDLCmyseq636133,mineseen636130,yourseen515046,linedown链路发生噪声CRC循环交验错误线缆出现问题Keepalive信号错误在实现密码恢复后,以下哪些进行修改操作:()修改

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