CCNA第四学期Final_exam考试英文版答案4(R&S-5.0).doc

《CCNA第四学期Final_exam考试英文版答案4(R&S-5.0).doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、1窗体顶端WhichtwostatementsaboutDSLaretrue?(Choosetwo.)usersareonasharedmediumusesRFsignaltransmissionlocalloopcanbeupto3.5miles(5.5km)physicalanddatalinklayersaredefinedbyDOCSISuserconnectionsareaggregatedataDSLAMlocatedattheCO窗体底端2窗体顶端Whichtwostatementsare

2、trueregardingaPPPconnectionbetweentwoCiscorouters?(Choosetwo.)LCPteststhequalityofthelink.LCPmanagescompressiononthelink.OnlyasingleNCPisallowedbetweenthetworouters.NCPterminatesthelinkwhendataexchangeiscomplete.WithCHAPauthentication,theroutersexchangep

3、laintextpasswords.窗体底端3窗体顶端AnetworkadministratorisaskedtodesignasystemtoallowsimultaneousaccesstotheInternetfor250users.TheISPcanonlysupplyfivepublicIPaddressesforthisnetwork.Whattechnologycantheadministratorusetoaccomplishthistask?classfulsubnettingvari

4、ablelengthsubnetmasksclasslessinterdomainroutingport-basedNetworkAddressTranslation窗体底端4窗体顶端Refertotheexhibit.AnadministratorisconfiguringNATtoprovideInternetaccesstotheinsidenetwork.Aftertheconfigurationiscompleted,usersareunabletoaccesstheInternet.What

5、isthecauseoftheproblem?TheNATpoolisusinganinvalidaddressrange.Theinsideandoutsideinterfacesarebackwards.TheACLisreferencingthewrongnetworkaddress.TheNATinsidesourcecommandisreferringtothewrongACL.窗体底端5窗体顶端WhatistheexpectedbehaviorofanADSLservice?Thedownl

6、oadrateisfasterthantheuploadrate.Theuploadrateisfasterthanthedownloadrate.Thedownloadanduploadratesarethesame.Theusercanselecttheuploadanddownloadratesbasedonneed.窗体底端6窗体顶端AnetworkadministratoristroubleshootingthedynamicNATthatisconfiguredonrouterR2.Whic

7、hcommandcantheadministratorusetoseethetotalnumberofactiveNATtranslationsandthenumberofaddressesthatareallocatedfromtheNATpool?R2# showipnatstatisticsR2# showipnattranslationsR2# showrunning-configR2# clearipnattranslation窗体底端7窗体顶端Whichtypeoftrafficwouldm

8、ostlikelyhaveproblemswhenpassingthroughaNATdevice?TelnetIPsecHTTPICMPDNS窗体底端8窗体顶端Refertotheexhibit.TheinsidelocalIPaddressofPC-Ais192.168.0.200.WhatwillbetheinsideglobaladdressofpacketsfromPC-AaftertheyaretranslatedbyR1?10