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兼職工程師考試題居住地:姓名:選擇題分?jǐn)?shù):問(wèn)答題分?jǐn)?shù):一、選擇題:下列哪些設(shè)備可以用來(lái)劃分網(wǎng)段:(e)A、hub? B、repeater? C、switchD、bridge E、router?? F、mediaconverters那些設(shè)備可以用來(lái)分隔局域網(wǎng):(c,d)下列那個(gè)地址是單播地址:()A、22? B、FFFF.FFFF.FFFF??C、192.168。24.59/30D、255.255.255.255 ?? ? E、172.31.128.255/18網(wǎng)線常見線序有直通線、交叉線、反轉(zhuǎn)線三種做法,請(qǐng)把下列設(shè)備分類,并指出類別內(nèi)及類別間連接所使用的線路類型:HUBSWITCHROUTERPCCONSOLEAnswer:1、();2、();3、()對(duì)以下路由協(xié)議進(jìn)行分類,并寫出各類的路有協(xié)議類型:()RIPV1RIPV2IGRPEIGRPOSPFISIS下列那些路由協(xié)議支持VLSM和路由匯總:()IGRP RIPV1??RIPV2? EIGRP ?OSPF ?ISIS??VTP ?CDP下列哪條訪問(wèn)控制列表會(huì)阻止所有到10.10.1.0/24網(wǎng)段的telnet請(qǐng)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.Thedestinat(yī)ionaddressD.ThesourceaddressE.AlloftheaboveAbrandnewnetworkapplicationisrequiredfortheAcmeCompany,andtheyareconsideringtheuseofaconnectionlessservice.Whatarethecharacteristicsofaconnectionlessservice?(兩項(xiàng))()A.ItusesaReliabletransportmechanism.B.ItusesaNon-reliabletransportmechanismC.Itislessbandwidth-intensivethanconnectionorientedservicesD.ituseshandshakingTheTestKingnetworkisimplementingdialupservicesfortheirremoteemployee(cuò)s.TestKingusesseveraldifferentLayer3protocolsonwork.Authenticationoftheusersconnectingtothenetworkisrequiredforsecurity.Additionally,someemployee(cuò)swillbedialinglongdistanceandwillneedcallbacksupport.Whichprotocolisthebestchoicefortheseremoteaccessservices?()A.802.1B.FramerelayC.HDLCD.PPPE.SLIPF.PAPTestKinghas25computersanddecidestoconnectthenetworktotheInternet.TestKingwouldlikeforallofthecomputerstohaveaccesstotheInternetatthesametime,butTestKingonlyhasfourusablepubliclyroutableIPaddresses.WhatshouldbeconfiguredontheroutersothatallcomputerscanconnecttotheInternetsimultaneously?()A.Stat(yī)icNATB.GlobalNATC.DynamicNATD.StaticNATwithACLsE.DynamicNATwithoverloadWhichofthefollowingdescribeprivat(yī)eIPaddresses?(Choosetwo)()A.AddresseschosenbyacompanytocommunicatewiththeInternet.B.Addressesthat(yī)cannotberoutedthroughthepublicInternet.C.AddressesthatcanberoutedthroughthepublicInternet.D.Aschemetoconservepublicaddresses.E.AddresseslicensedtoenterpriseorISPsbyanInternetregistryorganization.WhatparametersmustyouspecifywhenyouenableEIGRProuting?()A.Thebroadcastaddress,andASnumberB.ThenetworknumberandASnumberC.EIGRProuting,networknumberandpassiveinterfaceD.EIGRProuting,networknumber,andASWhichofthefollowingaddressescanbeassignedtoahostwhenusingasubnetmaskof255.255.254.0?(Selectthree(cuò))()A.B.C.175.33.3.255D.26.35.2.255E.152.135.7.0F.17.35.36.0Youneedtosetthedefaultgat(yī)ewayofoneofyourTestKingswitches.Whichcommandwillsetthedefaultgatewayto192.168.12.1onaCiscoswitch?()A.Switch(config)#ipdefault-network192.168.12.1B.Switch(config)#iproute-default192.168.12.1C.Switch(config)#ipdefault-gat(yī)eway192.168.12.1D.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.Itconfiguresaroutertodropallpacketsforwhichthedestinat(yī)ionnetworkisunknown.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的情況下也許是哪些故障導(dǎo)致:()載波沒有收到線纜出現(xiàn)問(wèn)題Clockrate在DCE端沒有設(shè)立服務(wù)提供商導(dǎo)致的ERRORRATE過(guò)高在Serialxisdown,lineprotocolisdown的情況下也許是哪些故障導(dǎo)致:()載波沒有收到線纜出現(xiàn)問(wèn)題Clockrate在DCE端沒有設(shè)立服務(wù)提供商導(dǎo)致的ERRORRATE過(guò)高請(qǐng)參看一下配置:Figure1-1OutputoftheHDLCshowinterfaceserialCommandTable1-1showstheinterfacestatusconditions,possibleproblemsassociat(yī)edwiththeconditions,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----BFiveminuteinputrat(yī)e9000bits/sec,16packets/secFiveminuteoutputrate9000bits/sec,17packets/sec5780806packetsinput,bytes,0nobufferReceived757broadcasts,0runts,0giants146124inputerrors----C,87243CRC----D,58857frame----E,0overrun,0ignored,3abort5298821packetsoutput,bytes,0underruns0outputerrors,0collisions,2941interfaceresets,0restarts2carriertransitions通過(guò)以上條目判斷出:()接口的硬件有問(wèn)題inputdrop發(fā)生在串行接口上也許由于:輸入速率超過(guò)路由器解決能力。輸入和輸出隊(duì)列都屬于硬件特性,一般設(shè)備不能提供修改??梢杂茫鑟ld-queuein進(jìn)行調(diào)整輸出隊(duì)列有一種對(duì)于線路的測(cè)試為“環(huán)路監(jiān)測(cè)”,根據(jù)下圖標(biāo)注出了環(huán)路監(jiān)測(cè)是原理,請(qǐng)選出對(duì)的的一個(gè):()通過(guò)下面顯示,最終顯示為接口down的因素是由于:()Figure1-2debugserialinterfaceCommandOutputrouter#debugserialinterfaceSerial1:HDLCmyseq636119,mineseen636119,yourseen515032,lineupSerial1:HDLCmyseq636120,mineseen636120,yourseen515033,lineupSerial1:HDLCmyseq636121,mineseen636121,yourseen515034,lineupSerial1:HDLCmyseq636122,minesee(cuò)n636122,yourseen515035,lineupSerial1:HDLCmyseq636123,mineseen636123,yourseen515036,lineupSerial1:HDLCmyseq636124,mineseen636124,yoursee(cuò)n515037,lineupSerial1:HDLCmyseq636125,mineseen636125,yourseen515038,lineupSerial1:HDLCmyseq636126,mineseen636126,yourseen515039,lineupSerial1:HDLCmyseq636127,mineseen636127,yourseen515040,lineupSerial1:HDLCmyseq636128,mineseen636127,yourseen515041,lineupSerial1:HDLCmyseq636129,mineseen636129,yoursee(cuò)n515042,lineupSerial1:HDLCmyseq636130,mineseen636130,yourseen515043,lineupSerial1:HDLCmyseq636131,minesee(cuò)n636130,yourseen515044,lineupSerial1:HDLCmyseq636132,minesee(cuò)n636130,yourseen515045,lineupSerial1:HDLCmyseq636133,mineseen636130,yoursee(cuò)n515046,linedown鏈路發(fā)生噪聲CRC循環(huán)交驗(yàn)錯(cuò)誤線纜出現(xiàn)問(wèn)題Kee(cuò)palive信號(hào)錯(cuò)誤在實(shí)現(xiàn)密碼恢復(fù)后,以下哪些進(jìn)行修改操作:()修改
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