2023年網(wǎng)絡(luò)工程師考試題

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