新版CCNA题库640802例题分析完整版V13三

新版CCNA802v13题库分析（三）100.Whichofthefollowingstatementsdescribethenetworkshowninthegraphic?(Choosetwo.)

A.Therearetwobroadcastdomainsinthenetwork.

B.Therearefourbroadcastdomainsinthenetwork.

C.Therearesixbroadcastdomainsinthenetwork.

D.Therearefourcollisiondomainsinthenetwork.

E.Therearefivecollisiondomainsinthenetwork.

F.Therearesevencollisiondomainsinthenetwork.

Answer:AF这是个广播域和冲突域的问题。首先我们需要知道HUB整体是一个广播域和冲突域，而交换机整体是一个广播域，每个接口都是一个冲突域。知道了这些，这个问题的答案就很明显了，有两个广播域和七个冲突域。都没有到Attalla的映射，所以也无法和Attalla建立连通性。

101.Whichofthefollowingaretrueregardingthecommandoutputshowninthedisplay?(Choosetwo.)

A.ThereareatleasttworoutersparticipatingintheRIPprocess.

B.Apingtowillbesuccessful.

C.Apingto.2willbesuccessful.

D.RtrAhasthreeinterfacesparticipatingintheRIPprocess.

Answer:AC因为RIP的metric是基于跳数的，在debugiprip中RtrA发出的路由的metric为2,所以在RIP进程下至少有两台路由器；而.0metric1表示这个路由是自己直连的，所以是能成功的。

102.Whatthreepiecesofinformationcanbeusedinanextendedaccesslisttofiltertraffic?(Choosethree.)

A.protocolB.VLANnumberC.TCPorUDPportnumbers

D.sourceswitchportnumberE.sourceIPaddressanddestinationIPaddress

F.sourceMACaddressanddestinationMACaddress

Answer:ACEACL是基于三层的过滤，因此他可以基于ip，portnumber来过滤流量，扩展的访问控制列表是可以基于源和目的的同时的过滤。

103.Refertotheexhibit.WhichtwostatementsaretrueaboutinterVLANroutinginthetopologythatisshownintheexhibit?(Choosetwo.)

A.HostEandhostFusethesameIPgatewayaddress.

B.Router1andSwitch2shouldbeconnectedviaacrossovercable.

C.Router1willnotplayaroleincommunicationsbetweenhostAandhostD.

D.TheFastEthernet0/0interfaceonRouter1mustbeconfiguredwithsubinterfaces.

E.Router1needsmoreLANinterfacestoaccommodatetheVLANsthatareshownintheexhibit.

F.TheFastEthernet0/0interfaceonRouter1andSwitch2trunkportsmustbeconfiguredusingthesameencapsulationtype.

Answer:DF为了实现相同相同交换机间的不同VLAN之间的通讯应该用的三层的设备，借助trunk来实现。因此要将Router1和switch2相连的接口配置为trunk，trunk的模式还应该是相同的，不同的trunk的封装，是无法实现连通性的。

104.Whatistheeffectofusingtheservicepassword-encryptioncommand?

A.Onlytheenablepasswordwillbeencrypted.

B.Onlytheenablesecretpasswordwillbeencrypted.

C.Onlypasswordsconfiguredafterthecommandhasbeenenteredwillbeencrypted.

D.Itwillencryptthesecretpasswordandremovetheenablesecretpasswordfromtheconfiguration.

E.Itwillencryptallcurrentandfuturepasswords.

Answer:Epasswordencryption是为了给密码加密。

A.Router1hasspecificbootsystemcommandsthatinstructittoloadIOSfromaTFTPserver.

B.Router1isactingasaTFTPserverforotherrouters.

C.Router1cannotlocateavalidIOSimageinflashmemory.

D.Router1defaultedtoROMMONmodeandloadedtheIOSimagefromaTFTPserver.

E.CiscorouterswillfirstattempttoloadanimagefromTFTPformanagementpurposes.

Answer:ACSystemimagefileis¡°t29/Hampton/nitro/c7200-j-mz¡±这句话表明系统的镜像来自从tftp。引导程序首先使用flash中所找到的第一个有效的IOS镜像，如果flash中没有有效的IOS镜像，引导程序将生成一个TFTP本地广播以定位TFTP服务器，如果没有找到TFTP服务器，引导程序将加载ROM中的迷你IOS（RXBOOT模式），如果ROM中有迷你IOS，那么迷你IOS在随后加载并且进入RXBOOT模式；否则路由器不是重新试图寻找IOS镜像，就是加载ROMMON并且进入ROMMonitor模式。因此说明Router1在flash中没有找到有效的IOS镜像。从而加载了tftp中的镜像。

106.AtwhichOSIlayerisalogicalpathcreatedbetweentwohostsystems?

A.sessionB.transportC.networkD.datalinkE.physical

Answer:C我们所说的IP地址就是一个逻辑的地址，他是在OSI七层模型中的第三层network层创建的。是用于通讯的逻辑的地址。

107.Whatfunctionsdoroutersperforminanetwork?(Choosetwo.)

A.packetswitchingB.accesslayersecurityC.pathselection

D.VLANmembershipassignmentE.bridgingbetweenLANsegments

F.microsegmentationofbroadcastdomains

Answer:AC路由器在一个网络中的作用是选择路径进行转发。

108.Refertotheexhibit.Theshowvtpstatuscommandisexecutedataswitchthatisgeneratingtheexhibitedoutput.Whichstatementistrueforthisswitch?

A.TheswitchforwardsitsVLANdatabasetootherswitchesintheICNDVTPdomain.

B.TheconfigurationrevisionnumberincrementseachtimetheVLANdatabaseisupdated.

C.TheswitchforwardsVTPupdatesthataresentbyotherswitchesintheICNDdomain.

D.TheVLANdatabaseisupdatedwhenVTPinformationisreceivedfromotherswitches.

Answer:CVTP是为了动态学习和同步VLAN信息的，但是他的同步和学习都是以域为单位的，只有同一个域中的VLAN信息才可以同步和学习。而VTP的模式有三种：server,client,transparent。其中transparent模式为通明桥的模式，在这种模式下的VLAN的信息是不能被其他设备学习到的，而切这种模式下的设备也不学习其他设备的VLAN信息，他只是转发VLAN的信息，但是不学习。

109.ACiscorouterisbootingandhasjustcompletedthePOSTprocess.ItisnowreadytofindandloadanIOS

image.Whatfunctiondoestherouterperformnext?

A.Itcheckstheconfigurationregister.

B.ItattemptstobootfromaTFTPserver.

C.Itloadsthefirstimagefileinflashmemory.

D.ItinspectstheconfigurationfileinNVRAMforbootinstructions.

Answer:A

110.Refertotheexhibit.Theoutputthatisshownisgeneratedataswitch.Whichthreeofthesestatementsaretrue?(Choosethree.)

A.Allportswillbeinastateofdiscarding,learning,orforwarding.

B.ThirtyVLANshavebeenconfiguredonthisswitch.

C.Thebridgepriorityislowerthanthedefaultvalueforspanningtree.

D.Allinterfacesthatareshownareonsharedmedia.

E.Alldesignatedportsareinaforwardingstate.

F.ThisswitchmustbetherootbridgeforallVLANsonthisswitch.

Answer:ACE

111.Whatisthefunctionofthecommandswitchporttrunknativevlan999onaCiscoCatalystswitch?

A.ItcreatesaVLAN999interface.

B.ItdesignatesVLAN999foruntaggedtraffic.

C.ItblocksVLAN999trafficfrompassingonthetrunk.

D.ItdesignatesVLAN999asthedefaultforallunknowntaggedtraffic.

Answer:Bnativevlan是不打标签的VLAN，这指定nativevlan为999，表明VLAN999为不用打标签的VLAN

112.Refertotheexhibit.AfteraRIProuteismarkedinvalidonRouter_1,howmuchtimewillelapsebeforethatrouteisremovedfromtheroutingtable?

A.30secondsB.60secondsC.90secondsD.180secondsE.240seconds

Answer:B

113.Whenanewtrunkisconfiguredona2950switch,whichVLANsbydefaultareallowedoverthetrunklink?

A.noVLANsB.allVLANsC.onlyVLANs1-64

D.onlytheVLANsthatarespecifiedwhencreatingthetrunk

Answer:BTrunk上默认是可以转发所有VLAN的数据的。

114.WhichthreestatementsdescribethedifferencesbetweenRIPversion1andRIPversion2?(Choosethree.)

A.RIPversion1broadcastsupdateswhereasRIPversion2usesmulticasts.

B.RIPversion1multicastsupdateswhileRIPversion2usesbroadcasts.

C.BothRIPversion1andRIPversion2areclasslessroutingprotocols.

D.RIPVersion2isaclasslessroutingprotocolwhereasRIPversion1isaclassfulroutingprotocol.

E.BothRIPversion1andversion2supportauthentication.

F.RIPversion2sendsthesubnetmaskinupdatesandRIPversion1doesnot.

Answer:ADF

115.Anaccesslistwaswrittenwiththefourstatementsshowninthegraphic.Whichsingleaccessliststatementwillcombineallfourofthesestatementsintoasinglestatementthatwillhaveexactlythesameeffect?

A.access-list10permit.255B.access-list10permit55

C.access-list10permit55D.access-list10permit55

E.access-list10permit55

Answer:C用一个单独的语句来匹配上面写出的四条ACL，也就一一个汇总的问题，将，进行汇总，将他们的第3个八字节以二进制展开，相同的位作为他们的汇总的条目，然后计算他们的掩码位数为多少，所以这四个条目汇总到一个条目为/22,掩码用通配符来写应该是.255。

116.Refertotheexhibit.Alloftheroutersinthenetworkareconfiguredwiththeipsubnet-zerocommand.WhichnetworkaddressesshouldbeusedforLinkAandNetworkA?(Choosetwo.)2530F.LinkA-12/30

Answer:BD这是个IP地址规划的考题。NetworkA中有120台主机，因此NetworkA中至少需要122个IP地址，根据公式2n>=122,可以解出n=7,因此网络位为32-7=25，容纳的IP地址为128。因此NetworkA的网段就可以为或。通过其他的设备分配的地址可以看到的地址已经有一部分分配出去了，因此NetworkA分配的地址空间只能是只需要有两个可用的IP地址，因此网段中需要有4个地址根据公式2n>=4，可以解出n=2,因此网络位为32-2=30。而从其他路由器上的地址分配我们可以看到地址-5,2-27这些IP地址都已经分配出去了，因此结合答案我们可以看到LinkA的地址空间只能为。

117.AtwhichlayersoftheOSImodeldoWANsoperate?(Choosetwo.)

A.applicationlayerB.sessionlayerC.transportlayerD.networklayer

E.datalinklayerF.physicallayer

Answer:EFWAN是工作在一层和二层的，比如现在常用的Frame-relay,ATM等这些都是工作在OSI的二层的。

A.HQ(config)#iproute

Branch(config)#iproute

B.HQ(config)#routerrip

HQ(config-router)#network

HQ(config-router)#network

Branch(config)#routerrip

Branch(config-router)#network

Branch(config-router)#network

C.HQ(config)#routereigrp56

HQ(config-router)#network

HQ(config-router)#network

Branch(config)#routereigrp56

Branch(config-router)#network

Branch(config-router)#network

D.HQ(config)#routerospf1

HQ(config-router)#network.3area0

HQ(config-router)#network.255area0

Branch(config)#routerospf1

Branch(config-router)#network.255area0

Branch(config-router)#network.3area0

Answer:A动态路由协议都是需要有他的更新包来传递路由的，而这些都是会占用带宽的，为了减小流量的冲突我们可以采用静态路由，他是会占用任何带宽的。

119.Refertotheexhibit.Whatisthepurposeoftheconfigurationthatisshown?

A.totranslateaddressesofhostsonthefa0/0andfa0/1networkstoasinglepublicIPaddressforInternetaccess

B.totranslatetheinternaladdressofeachhostonfa0/0andfa0/1toauniqueexternalIPaddressforInternetacces

C.toprovidesecurityonfa0/0andfa0/1throughtheapplicationofanaccesslist

D.toallowIPhostsontheInternettoinitiateTCP/IPconnectionstohostsonfa0/0andfa0/1

Answer:A

120.AnetworkadministratorwantstoensurethatonlytheservercanconnecttoportFa0/1onaCatalystswitch.TheserverispluggedintotheswitchFa0/1portandthenetworkadministratorisabouttobringtheserveronline.WhatcantheadministratordotoensurethatonlytheMACaddressoftheserverisallowedbyswitchportFa0/1?

A.ConfigureportFa0/1toacceptconnectionsonlyfromthestaticIPaddressoftheserver.

B.EmployaproprietaryconnectortypeonFa0/1thatisincompatiblewithotherhostconnectors.

C.ConfiguretheMACaddressoftheserverasastaticentryassociatedwithportFa0/1.

D.BindtheIPaddressoftheservertoitsMACaddressontheswitchtopreventotherhostsfromspoofingtheserverIPaddress.

E.ConfigureportsecurityonFa0/1torejecttrafficwithasourceMACaddressotherthanthatoftheserver.

F.ConfigureanaccesslistontheswitchtodenyservertrafficfromenteringanyportotherthanFa0/1.

Answer:CE交换机的f0/1端口上仅仅允许转发server的流量，因此我们可以配置将server的mac地址和交换机的端口进行绑定。然后用在端口f0/1上配置端口安全以过滤其他除server外的流量。

121.TheOSPFHelloprotocolperformswhichofthefollowingtasks?(Choosetwo.)

A.Itprovidesdynamicneighbordiscovery.

B.Itdetectsunreachableneighborsin90secondintervals.

C.Itmaintainsneighborrelationships.

D.Itnegotiatescorrectnessparametersbetweenneighboringinterfaces.

E.Itusestimerstoelecttherouterwiththefastestlinksasthedesignatedrouter.

F.ItbroadcastshellopacketsthroughouttheinternetworktodiscoverallroutersthatarerunningOSPF.

Answer:ACOSPF的Hello包的作用是发现并维持邻居关系。

122.WhichtwopasswordsmustbesuppliedinordertoconnectbyTelnettoaproperlysecuredCiscoswitchandmakechangestothedeviceconfiguration?(Choosetwo.)

A.consolepasswordB.vtypasswordC.auxpasswordD.ttypassword

E.enablesecretpasswordF.usernamepassword

Answer:BE

123.Refertotheexhibit.WhatIPaddressshouldbeassignedtoWorkstationA?28CE.60/28

Answer:C因为交换机连接的设备是在同一个网段中的，因此WorkstationA分配的IP地址应该是和路由器的Fa0/0的地址是在同一个网段的。Fa0/0的地址为，他包括的地址范围为44-59,而为网络地址为这个网段的广播地址，所以可以使用的地址就是45-58.所以可以看出答案中可以分配给WorkstationA的地址为。

A.40B.52

C.640D.652

E.840F.852

Answer:C进行汇总：还是将他们换算成二进制的形式，然后找相同的位数，就可以得到，即。

125.AninboundaccesslisthasbeenconfiguredonaserialinterfacetodenypacketentryforTCPandUDPports21,23and25.WhattypesofpacketswillbepermittedbythisACL?(Choosethree.)

A.FTPB.TelnetC.SMTPD.DNSE.HTTPF.POP3

Answer:DEF有些常用的公用端口号是我们需要记住的：FTP(20,21),Telnet(23),SMTP-Email(25),DNS(53),TFTP(69),WWW(80),POP邮件(110)。在这，我们过滤了端口号为21,23和25的端口号的流量，因此就是过滤了FTP,Telnet和SMTP的流量，剩下的就是可以允许的。

A.Thenetworkhasnotfullyconverged.B.IProutingisnotenabled.

C.Astaticrouteisconfiguredincorrectly.

D.TheFastEthernetinterfaceonCoffeeisdisabled.

E.Theneighborrelationshiptableisnotcorrectlyupdated.

F.TheroutingtableonCoffeehasnotupdated.

Answer:C中的用户是无法访问中的server的，因为路由器Coffee上没有到达这个网段的路由。虽然说路由器Coffee上有一条缺省的静态路由，但是这个缺省路由的出接口却是路由器Coffee上没有的地址。因此无法访问的原因就是这个缺省路由的配置出现了问题。

127.WhydoesthedatacommunicationindustryusethelayeredOSIreferencemodel?(Choosetwo.)

A.Itdividesthenetworkcommunicationprocessintosmallerandsimplercomponents,thusaidingcomponentdevelopment,design,andtroubleshooting.

B.Itenablesequipmentfromdifferentvendorstousethesameelectroniccomponents,thussavingresearchanddevelopmentfunds.

C.Itsupportstheevolutionofmultiplecompetingstandards,andthusprovidesbusinessopportunitiesforequipmentmanufacturers.

D.Itencouragesindustrystandardizationbydefiningwhatfunctionsoccurateachlayerofthemodel.

E.Itprovidesameansbywhichchangesinfunctionalityinonelayerrequirechangesinotherlayers.

Answer:ADswitchportport-securitymaximum1这个命令是配置这个端口为安全模式且只允许有学习一个mac地址。Switchportport-securityviolationshutdown:这句命令的意思是如果借口违反了安全策略就shutdown该接口。

128.Refertotheexhibit.RIPv2isinuseonthenetworkwithnostandardpolicyinplaceforsummarization.ApacketarrivesatCentralRouterwithadestinationIPaddressof1.Giventheoutputthatisshown,howwillCentralRouterprocessthatpacket?A.Itwillforwardthepacketto0.B.Itwillforwardthepacketto2.

C.Itwillforwardthepacketto.D.Itwillholdthepacketfor22seconds.

E.Itwillholdthepacketfor21seconds.F.Itwilldiscardthepacketbecausethereisnomatchingroute.

Answer:B

129.Thenetworksecuritypolicyrequiresthatonlyonehostbepermittedtoattachdynamicallytoeachswitchinterface.Ifthatpolicyisviolated,theinterfaceshouldshutdown.Whichtwocommandsmustthenetworkadministratorconfigureonthe2950Catalystswitchtomeetthispolicy?(Choosetwo.)

A.Switch1(config-if)#switchportport-securitymaximum1

B.Switch1(config)#mac-address-tablesecure

C.Switch1(config)#access-list10permitiphost

D.Switch1(config-if)#switchportport-securityviolationshutdown

E.Switch1(config-if)#ipaccess-group10

Answer:ADswitchportport-securitymaximum1这个命令是配置这个端口为安全模式且只允许有学习一个mac地址。Switchportport-securityviolationshutdown:这句命令的意思是如果借口违反了安全策略就shutdown该接口。

130.Refertotheexhibit.AnetworkassociatehasconfiguredOSPFwiththecommand:City(config-router)#network4.63area0Aftercompletingtheconfiguration,theassociatediscoversthatnotalltheinterfacesareparticipatinginOSPF.WhichthreeoftheinterfacesshownintheexhibitwillparticipateinOSPFaccordingtothisconfigurationstatement?(Choosethree.)

A.FastEthernet0/0B.FastEthernet0/1C.Serial0/0D.Serial0/1.102

E.Serial0/1.103F.Serial0/1.104

Answer:BCD4.63匹配的地址范围是4-27，所以被激活的接口有FastEthernet0/1,Serial0/0,Serial0/1.102.

131.Refertotheexhibit.ExplainhowtheroutesinthetablearebeingaffectedbythestatuschangeoninterfaceEthernet0.

A.Switch2istherootbridge.

B.SpanningTreeisnotrunning.

C.HostDandServer1areinthesamenetwork.

D.NocollisionscanoccurintrafficbetweenHostBandHostC.

E.IfFa0/0isdownonRouter1,HostAcannotaccessServer1.

F.IfFa0/1isdownonSwitch3,HostCcannotaccessServer2.

Answer:E这个涉及到多个交换机的多个VLAN间的通讯。而在交换机之间有一个环路，因此生成树阻断了其中的一个接口，根据生成树的原理，block的端口是在非根桥上的，因此switch2不会是根桥。而hostD和server一看就不是在相同的VLAN之间，因此是不在相同的网络中的。我们说整个hub是一个大的冲突域和广播域，此hostB和hostC之间是有冲突存在的。HostA和server在不同的VLAN之间，他们之间通讯是要借助于Router1的接口Fa0/0的子接口来实现的，因此如果Router1的接口Fa0/0down了，那么HostA和server1之间就无法通讯了。同理hostC与server2之间的通讯也是借助于Router1的Fa0/0来实现的，如果switch3的Fa0/1down了，那么生成树的就会重新选举，以前block的接口就会起来转发数据，hostC就通过switch2将他的数据发送出去，他与server2之间的连通性还是不能失去的。

133.WhichstatementsaretrueaboutEIGRPsuccessorroutes?(Choosetwo.)

A.AsuccessorrouteisusedbyEIGRPtoforwardtraffictoadestination.

B.Successorroutesaresavedinthetopologytabletobeusediftheprimaryroutefails.

C.Successorroutesareflaggedas"active"intheroutingtable.

D.Asuccessorroutemaybebackedupbyafeasiblesuccessorroute.

E.Successorroutesarestoredintheneighbortablefollowingthediscoveryprocess.

Answer:ADEIGRP的successor路径是他选出的最优的路径，路由器将选择这条路径到达目的地。而feasiblesuccessor则是successor的备份的路径，如果successor路径出了问题，就立即将feasiblesuccessor路径转为successor路径转发数据。

134.Whichofthefollowingistrueregardingtheuseofswitchesandhubsfornetworkconnectivity?

A.Switchestakelesstimetoprocessframesthanhubstake.

B.Switchesdonotforwardbroadcasts.

C.Hubscanfilterframes.

D.Usinghubscanincreasetheamountofbandwidthavailabletohosts.

E.Switchesincreasethenumberofcollisiondomainsinthenetwork.

Answer:E

135.Whyhasthenetworkshownintheexhibitfailedtoconverge?

A.Thenoauto-summarycommandneedstobeappliedtotherouters.

B.Thenetworknumbershavenotbeenproperlyconfiguredontherouters.

C.Thesubnetmasksforthenetworknumbershavenotbeenproperlyconfigured.

D.Theautonomoussystemnumberhasnotbeenproperlyconfigured.

E.Thebandwidthvalueshavenotbeenproperlyconfiguredontheserialinterfaces.

Answer:A

136.DNSserversprovidewhatservice?

A.GivenanIPaddress,theydeterminethenameofthehostthatissought.

B.TheyconvertdomainnamesintoIPaddresses.

C.Theyrunaspellcheckonhostnamestoensureaccuraterouting.

D.TheymapindividualhoststotheirspecificIPaddresses.

Answer:B

137.WhataretwocharacteristicsofTelnet?(Choosetwo.)

A.Itsendsdataincleartextformat.

B.ItisnolongersupportedonCisconetworkdevices.

C.ItismoresecurethanSSH.

D.Itrequiresanenterpriselicenseinordertobeimplemented.

E.ItrequiresthatthedestinationdevicebeconfiguredtosupportTelnetconnections.

Answer:AE

138.WhatTCP/IPstackconfigurationfeaturescanDHCPprovide,inadditiontoassigninganIPaddress?(Choosethree.)

A.defaultgatewayB.DNSserversC.FTPserverD.helperaddress

E.subnetmaskF.TFTPserver

Answer:ABE

139.WhichofthefollowingarekeycharacteristicsofPPP?(Choosethree.)

A.canbeusedoveranalogcircuits

B.mapsLayer2toLayer3address

C.encapsulatesseveralroutedprotocols

D.supportsIPonly

E.provideserrorcorrection

Answer:ACE

140.Refertotheexhibit.ThenetworkadministratorhasdiscoveredthattheVLANconfigurationofSwitchCisotsynchronizedwiththerestoftheswitchednetwork.WhyisSwitchCnotreceivingVTPupdates?

A.SwitchBisnotrelayingVTPadvertisementstoSwitchC.

B.SwitchChasfewerexistingVLANsthandoesSwitchA.

C.SwitchAsupportsagreaternumberofVLANsthandoesSwitchC.

D.SwitchChasarevisionnumberhigherthanthatbeingadvertised.

E.SwitchCshouldbeoperatinginVTPservermodetoreceiveVTPupdates.

F.SwitchBshouldbeoperatinginVTPserverorclientmodetorelayVTPupdates.

Answer:D

141.ThenetworkadministratoroftheOregonrouteraddsthefollowingcommandtotherouterconfiguration:iproute.Whataretheresultsofaddingthiscommand?(Choosetwo.)

A.Thecommandestablishesastaticroute.

B.Thecommandinvokesadynamicroutingprotocolfor.

C.Trafficfornetworkisforwardedto.

D.Trafficforallnetworksisforwardedto.

E.Thisrouteisautomaticallypropagatedthroughouttheentirenetwork.

F.Trafficfornetworkisforwardedtothenetwork.

Answer:AC

142.WhatwillanEthernetswitchdoifitreceivesaunicastframewithadestinationMACthatislistedintheswitchtable?

A.Theswitchwillnotforwardunicastframes.

B.Theswitchwillforwardtheframetoaspecificport.

C.Theswitchwillreturnacopyoftheframeoutthesourceport.

D.TheswitchwillremovethedestinationMACfromtheswitchtable.

E.Theswitchwillforwardtheframetoallportsexcepttheportonwhichitwasreceived.

Answer:B

143.ACiscorouterthatwasprovidingFrameRelayconnectivityataremotesitewasreplacedwithadifferentvendor'sframerelayrouter.Connectivityisnowdownbetweenthecentralandremotesite.Whatisthemostlikelycauseoftheproblem?

A.mismatchedLMItypes

B.incorrectDLCI

C.mismatchedencapsulationtypes

D.incorrectIPaddressmapping

Answer:C

144.TheEthernetnetworksconnectedtorouterR1inthegraphichavebeensummarizedforrouterR2as/20.WhichofthefollowingpacketdestinationaddresseswillR2forwardtoR1,accordingtothissummary?(Choosetwo.)

A.B.1C.1D.54

E.45F.44

Answer:AD

145.Whichtwopracticeshelpsecuretheconfigurationutilitiesonwirelessaccesspointsfromunauthorizedaccess?(Choosetwo.)

A.assigningaprivateIPaddresstotheAPB.changingthedefaultSSIDvalue

C.configuringanewadministratorpasswordD.changingthemixedmodesettingtosinglemodeE.configuringtrafficfiltering

Answer:BC

A.CorporaterouterB.EngineeringrouterC.SalesrouterD.allrouters

E.allroutersandswitches

Answer:A

147.IfanethernetportonarouterwasassignedanIPaddressof/20,whatisthemaximumnumberofhostsallowedonthissubnet?

A.1024B.2046C.4094D.4096E.8190

Answer:C

148.WhichtablesofEIGRProuteinformationareheldinRAMandmaintainedthroughtheuseofhelloandupdatepackets?(Choosetwo.)

A.neighbortableB.SPFtableC.RTPtableD.topologytableE.querytable

A.HQ_Routerlastreceivedanupdatefrom2at3:30am.

B.IfHQ_Routerdoesnotreceiveanupdatefrom2in30seconds,allroutesfromthatsourcewillberemovedfromtheroutingtable.

C.IfHQ_Routerdoesnotreceiveanupdatefrom2in30seconds,allroutesfromthatsourcewillbeflaggedwithahold-downtimer.

D.2isexpectedtosendanupdatetoHQ_Routerfornetworkin3minutesand30seconds.

Answer:B

150.Refertotheexhibit.AnetworkassociateneedstoconfiguretheswitchesandrouterinthegraphicsothatthehostsinVLAN3andVLAN4cancommunicatewiththeenterpriseserverinVLAN2.WhichtwoEthernetsegmentswouldneedtobeconfiguredastrunklinks?(Choosetwo.)

A.AB.BC.CD.DE.EF.FAnswer:CF

151.Refertotheexhibit.WhyaretwoOSPFdesignatedroutersidentifiedonCore_Router?

A.Core_Routerisconnectedtomorethanonemultiaccessnetwork.

B.Therouterat30isasecondaryDRincasetheprimaryfails.

C.TworouterIDshavethesameOSPFpriorityandarethereforetiedforDRelection.

D.TheDRelectionisstillunderwayandtherearetwocontendersfortherole.

Answer:A

152.ArouterlearnsaboutaremotenetworkfromEIGRP,OSPF,andastaticroute.Assumingallroutingprotocolsareusingtheirdefaultadministrativedistance,whichroutewilltherouterusetoforwarddatatotheremotenetwork?

A.Therouterwillusethestaticroute.B.TherouterwillusetheOSPFroute.

C.TherouterwillusetheEIGRProute.D.Therouterwillloadbalanceanduseallthreeroutes.

Answer:A

153.Refertotheexhibit.Anewsubnetwith12hostshasbeenaddedtothenetwork.Whichsubnetaddressshouldthisnetworkusetoprovideenoughuseableaddresseswhilewastingthefewestaddresses?29CD.6/29

Answer:C

154.WhatisonereasonthatWPAencryptionispreferredoverWEP?

A.AWPAkeyislongerandrequiresmorespecialcharactersthantheWEPkey.

B.TheaccesspointandtheclientaremanuallyconfiguredwithdifferentWPAkeyvalues.

C.WPAkeyvaluesremainthesameuntiltheclientconfigurationischanged.

D.ThevaluesofWPAkeyscanchangedynamicallywhilethesystemisused.

Answer:D

155.AnaccesslisthasbeendesignedtopreventHTTPtrafficfromtheAccountingDepartmentfromreachingtheHRserverattachedtotheHolyokerouter.Whichofthefollowingaccesslistswillaccomplishthistaskwhengroupedwiththee0interfaceontheChicopee

A.permitipanyany

denytcp.25552eq80

B.permitipanyany

denytcp52.055eq80

C.denytcp5255eq80

permitipanyany

D.denytcp.25552eq80

permitipanyany

Answer:D

156.Refertotheexhibit.ThenetworkadministratormustcompletetheconnectionbetweentheRTAoftheXYZCompanyandtheserviceprovider.Toaccomplishthistask,whichtwodevicescouldbeinstalledatthecustomersitetoprovideaconnectionthroughthelocallooptothecentralofficeoftheprovider?(Choosetwo.)

A.WANswitchB.PVCC.ATMswitchD.multiplexerE.CSU/DSUF.modem

Answer:EF

157.WhenarouterisconnectedtoaFrameRelayWANlinkusingaserialDTEinterface,howistheinterfaceclockratedetermined?

A.ItissuppliedbytheCSU/DSU.B.Itissuppliedbythefarendrouter.

C.Itisdeterminedbytheclockratecommand.D.ItissuppliedbytheLayer1bitstreamtiming.

Answer:A

158.WhenanewtrunklinkisconfiguredonanIOSbasedswitch,whichVLANsareallowedoverthelink?

A.Bydefault,alldefinedVLANsareallowedonthetrunk.

B.EachsingleVLAN,orVLANrange,mustbespecifiedwiththeswitchportmodecommand.

C.EachsingleVLAN,orVLANrange,mustbespecifiedwiththevtpdomaincommand.

D.EachsingleVLAN,orVLANrange,mustbespecifiedwiththevlandatabasecommand.

Answer:A

159.Acknowledgements,sequencing,andflowcontrolarecharacteristicsofwhichOSIlayer?

A.Layer2B.Layer3C.Layer4D.Layer5E.Layer6F.Layer7

Answer:C

160.Whichofthefollowingaretypesofflowcontrol?(Choosethree.)

A.bufferingB.cut-throughC.windowingD.congestionavoidanceE.loadbalancing

Answer:ACD

161.WhichprotocolprovidesamethodofsharingVLANconfigurationinformationbetweenswitches?

A.VTPB.STPC.ISLD.802.1QE.VLSM

Answer:A

162.Refertotheexhibit.HowwillrouterAchooseapathtothe.0/24networkwhendifferentroutingpr