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此题库为本人测试版本,题库本身没有问题,是由于有些地方输入错误,翻译失误,请大家及时指出,及时反馈。在此特别感谢中国思IT人气站,感谢我女朋友在背后默默的支持我。本人翻译的题库是根据由中国思IT人气提供的考试题库进行的进一步翻译。由于本人英语能力有限,查阅思科术语词典,计算机双解词典,计算机通信词典进行的翻译,翻译时有些地方翻译不完全或者翻译有些别扭,请大家谅解。本人的目的只是想让更多的人理解题库,更好的记忆。No.1Whichsequence(顺序)ofactions(活动)willallow(允许)telnetingfromauser'sPCtoarouterusingTCP/IP?A.Connect(连接)thePC'sCOMport(串列端口)totherouter'sconsoleportusingastraight-through(直通)cable(电缆).B.ConnectthePC'sCOMporttotherouter'sconsoleportusingacrossover(交叉)cable.C.ConnectthePC'sCOMporttotherouter'sEthernetportusingastraight-throughcable.D.ConnectthePC'sethernetporttotherouter'sEthernetportusingacrossovercable.E.ConnectthePC'sEthernetporttotherouter'sEthernetportusingarollovercable.F.ConnectthePC'sEthernetporttotherouter'sEthernetportusingastraight一throughcable.答案:D考题分析:用户可以使用pc网卡使用交叉线和路由器相连接。从而telnet也可以使用直通线通过pc-switch-router连接。No.2Anetworkadministrator(一个网络管理人员)hasinstalled(安装)anewrouterintheLisbonoffice(里斯本办公室)andisunabletobackup(无法备份)theIOSimage(映象)ofthenewroutertoaTFTPserverlocated(位于)intheGibraltaroffice(直布罗陀办公室).Giventhenetworkdiagram,identifythesourceoftheproblem(假定网络图,识别问题来源).A.incorrect(不正确的)defaultgateway(缺省网关)oftheTFTPserverB.incorrectsubnetmask(子网掩码)oftheTFTPserverC.incorrectIPaddressoftheTFTPserverD.incorrectIPaddressonE0oftheGibraltarrouterE.incorrectsubnetmaskontheLisbonrouter答案:B考题分析:题目中tftp服务器ip地址和路由器的以太口掩码不相同。255.255.255.192是26位掩码No.3Whatisthepurpose(目的)ofSpanning-Tree(生成树)inaswitchedLAN?(在一个交换机网络中的生成树的目的是什么?)A.toprovide(提供)amechanism(机制)fornetworkmonitoring(监察)inswitchedenvironments(环境)B.topreventroutingloopsinnetworkswithredundantpaths(冗余路径)C.topreventswitchingloopsinnetworkswithredundantswitchedpathsD.tomanage(管理),theaddition(加法),deletion(删除),andnamingofVLANsacrossmultipleswitchesE.tosegmentanetworkintomultiplecollisiondomains一个网络分割成多个冲突域答案:C考题分析:生成树使用的目的是为了阻止交换网络的环路。不能阻止路由环路,答案d说法是管理添加vlan。这说的是vtpNo.4Whatarethreeadvantages(优点)ofVLANs?(Choosethree.)VLAN的三个优点是?A.VLANsestablish(建立)broadcastdomains(广播域)inswitchednetworks.B.VLANsutilize(利用)packet(包)filtering(过滤)toenhance(提高)networksecurity(安全).C.VLANsprovide(提供)amethodofconserving(保存方法)IPaddressesinlarge(大的)networks.D.VLANsprovidealow-latency(低等待)internetworking(网络互连)alternative(选择)toroutednetworks.E.VLANsallow(允许)access(访问)tonetworkservicesbasedondepartment(基于部门的网络服务),notphysicallocation(存储单元).F.VLANscangreatlysimplify(简化)adding(增加),moving(传送),orchanging(改变)hostsonthenetwork.答案:AEF考题分析:vlan的好处是:降低管理成本带宽的使用效率更高可实施网络安全策略减少网络流量e.跟物理位置没有关系,可以根据部门的服务进行划分。b。vlan不是基于包过滤实现。也不会节约ip地址。No.5Whichofthefollowing(下列的)correctly(正确)describe(描述)stepsintheOSIdataencapsulationprocess?下列的哪个正确描述OSI数据封装步骤?(Choosetwo.)A.Thetransportlayer(传输层)divides(拆分)adatastream(数据流)intosegments(段)andadds(增加)reliability(可靠性)andflowcontrol(流量控制)information(信息).B.Thedatalinklayer(数据链路层)addsphysicalsourceanddestinationaddresses(目的地址)andanFCStothesegment.C.Packets(包)arecreatedwhenthenetworklayerencapsulatesaframewithsourceanddestinationhostaddressesandprotocol-relatedcontrolinformation.D.Packetsarecreated(创建)whenthenetworklayer(网络层)addsLayer3addressesandcontrolinformation(控制信息)toasegment.E.Thepresentationlayertranslatesbitsintovoltagesfortransmissionacrossthephysicallink.答案:AD考题分析:于osi封装数据过程ad传输层把数据拆分为段,并加上流量控制信息3层为包的地址b说法将fcs加在段上。错误e表示层不会传输bits错误No.6WhichofthefollowinghostaddressesaremembersofnetworksthatcanberoutedacrossthepublicInternet?(Choosethree.)A.10.172.13.65B.172.16.223.125C.172.64.12.29D.192.168.23.252E.198.234.12.95F.212.193.48.254答案:CEF考题分析:能被路由到internet,应该是公网地址范围。10.xxx172.16-172.31.x.x192.168.xx为私有地址No.7WhichcommandisrequiredforconnectivityinaFrameRelaynetworkifInverseARPisnotoperational?A.frame-relayarpB.frame-relaymapC.frame-relayinterface-dlciD.frame-relayImi-type答案:B考题分析:当frame-relay上关闭了invarse-arp,功能,就需要手工配置帧中继映射。命令为frame-relaymapipxxxxdlciNo.8Select(选择)thestatements(陈述)thatcorrectly(正确)describe(描写)fullorhalf-duplex(半双工)Ethernetoperation(操作).(Choosetwo.)A.Full-duplexEthernetusesCSMA/CDtopreventcollisions.B.Full-duplexEthernetusestwopairsofwiresfordata.半双工以态网为了数据使用两双的电线C.AnEthernethubcanoperateathalforfullduplex(全双工).D.Half-duplexEthernetusesaloopback(回环)circuit(线路)todetect(侦察)collisions(冲突)E.A1OMbpsfull-duplexEthernetcardallows20Mbpsfortransmitting(传输)dataand20Mbpsforreceiving(接收)data.答案:BD考题分析:半双工使用csma/cd,hub是不能使用全双工的。全双工是同时发和收10M,不是20No.9Aftertheshowiproutecommandhasbeenentered,thefollowingroutesaredisplayed.Whichroutewillnotbeenteredintotheroutingtableofaneighboringrouters?在Showiproute命令已被键入后,下列的路径显示,哪一条路径将不被进入相邻的路由选择表?A.R192.168.8.0/24[120/1]via192.168.2.2,00:00:10,Serial0B.R192.168.11.0/24[120/7]via192.168.9.1,00:00:03,Serial0C.C192.168.1.0/24isdirectlyconnected,Ethernet0D.R192.168.5.0/24[120/15]via192.168.2.2,00:00:10,Serial0答案:D考题分析:路由表中跳数为15传递给邻居后,变为16跳,就无效了。No.10WhichofthefollowingarebenefitsofVLANs?(Choosethree.)下列哪一个是划分VLAN的好处?A.Theyincrease(增加)thesize(大小)ofcollisiondomains.B.Theyallowlogicalgroupingofusersbyfunction.他们通过功能允许用户逻辑组。C.Theycanenhance(提高)networksecurity(安全性).D.Theyincreasethesizeofbroadcastdomainswhiledecreasingthenumberofcollisi
本文标题:CCNAtest 640-801 题库翻译第1部分
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