642611考试指南及题库分享.docx
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642611考试指南及题库分享.docx
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642611考试指南及题库分享
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642-611考试资料
CCIPImplementingCiscoMPLSExam(MPLS)
科目编号:
642-611
科目名称:
CCIPImplementingCiscoMPLSExam(MPLS)
ImplementingCiscoMPLSExam
考试认证:
CCIP
考试时间:
90分钟(55-65个问题)
可用语言:
英语
642-611考试是Cisco公司的CCIPImplementingCiscoMPLSExam(MPLS)认证考试官方代号,CCIPImplementingCiscoMPLSExam(MPLS)认证作为全球IT领域专家Cisco热门认证之一,是许多大中IT企业选择人才标准的必备条件。
考试描述:
heMPLSexamisaqualifyingexamfortheCCIPcertification(CiscoCertifiedInternetworkProfessional).The642-611MPLSexamwilltestmaterialscoveredundertheImplementingCiscoMPLScourse.TheexamwillcertifythatthesuccessfulcandidatehasknowledgeandskillsnecessarytogatherinformationfromthetechnologybasicstosomeofthemoreupdatedfeaturesandfunctionssuchasTrafficEngineering,FastRerouteandanyTransportoverMPLS(AToM).TheexamcoverstopicsonMPLSConcepts,MPLSLabelAssignmentandDistribution,Frame-Mode/Cell-ModeMPLSImplementationonCiscoIOSPlatforms,MPLSVirtualPrivateNetworksTechnology,MPLSVPNImplementation,ComplexMPLSVPNs,andInternetAccessfromaMPLSVPN.
考试内容:
hefollowinginformationprovidesgeneralguidelinesforthecontentlikelytobeincludedontheexam.However,otherrelatedtopicsmayalsoappearonanyspecificdeliveryoftheexam.
MPLSFundamentals
ExplainbasiccoreMPLStechnologyandconcepts
ExplainthefunctionofMPLSLabelsandLabelStack
IdentifyMPLSApplications
MPLSOperation
DescribethecharacteristicsandbehaviorsofLabelDistributioninFrame-modeMPLS
ExplainConvergenceinFrame-modeMPLS
DescribethecharacteristicsandbehaviorsofLabelDistributionoverLC-ATMInterfacesandVCMerge
DescribethefeaturesofMPLSLabelAllocation,Distribution,andRetentionModes
ExplaintheprocessofLDPNeighborDiscovery
Frame-Mode/Cell-ModeMPLSImplementation,ConfigurationandTroubleshooting
IdentifythefunctionsofCEFSwitching
ExplainandconfigureFrame-modeMPLSonCiscoIOSplatforms
MonitorMPLSonCiscoIOSplatforms-Frame-modeinterfaces
TroubleshootFrame-ModeMPLSconfigurationsonCiscoIOSPlatforms
ExplainandconfigureLabel-ControlledATMMPLS
ExplainandconfigureLC-ATMMPLSoverATMVirtualPath
MonitorLC-ATMMPLSonCiscoIOSplatforms
MPLSVirtualPrivateNetworksTechnology
DescribethecharacteristicsandfunctionsofVirtualPrivateNetworks
DescribeOverlayandPeer-to-PeerVPNs
ExplainMajorVPNCategorization
DescribeMPLSVPNArchitecture
DescribetheMPLSVPNRoutingModel
ExplaintheprocessofMPLSVPNPacketForwarding
MPLSVPNImplementation,ConfigurationandTroubleshooting
ExplainMPLSVPNMechanismssupportedonCiscoPlatforms
ConfigureVRFtables
ConfigureMP-BGPSessionbetweenPErouters
ConfigureSmallScaleRoutingProtocols
MonitorMPLSVPNOperation
ConfigureOSPFastheRoutingProtocol
ConfigureBGPastheRoutingProtocol
TroubleshootbasicMPLSVPNconfigurationerrors
ComplexMPLSVPNs
DescribetheadvancedVRFImport/ExportFeatures
ExplainthecharacteristicsofOverlappingVPNs
ExplainthefeaturesofCentralServicesVPNs
DescribeManagedCERouterService
InternetAccessfromaMPLSVPN
ExplainVPNInternetAccessTopologies
DescribeVPNInternetAccessImplementationMethods
DescribethemethodstoSeparateInternetAccessfromVPNService
InternetAccessBackboneasaSeparateVPN
考试题库:
Exam:
Cisco642-611
Title:
CCIPImplementingCiscoMPLSExam(MPLS)
1.InreferencetothediagramdepictingtheflowofroutingupdatesinanoverlappingVPN,whichstatementistrue?
A.SitesA1andA2willimportallnetworkswithRTs123:
750and123:
1000.
B.SitesB1andB2willexportallnetworkswithRTs123:
760and123:
1000.
C.SitesA1andA2communicatewithSitesB1andB2viaA-CentralandB-Central.
D.SiteA-CentralexportsRTs123:
750and123:
1000.
E.SiteB-CentralisexportingandimportingRT123:
1000soitcancommunicatewithsitesA1andA2.
Answer:
D
2.WhichthreestatementsarecorrectregardingLayer2overlayVPNsandpeer-to-peerVPNs?
(Choosethree.)
A.Peer-to-peerVPNsrequiretheestablishmentofvirtualcircuitstoconnectthedifferentcustomersitestogether.
B.Peer-to-peerVPNsrequiretheserviceprovidertoparticipateinthecustomerrouting,acceptingcustomerroutes,
transportingthemacrosstheserviceproviderbackbone,andfinallypropagatingthemtoothercustomersites.
C.Withpeer-to-peerVPNs,theserviceproviderisresponsiblefortransportofLayer2framesbetweencustomersites,
andthecustomertakesresponsibilityforallhigherlayers.
D.TheimplementationofLayer2overlayVPNsisthetraditionalswitched-WANmodel,implementedwith
technologieslikeX.25,FrameRelayorATM.
E.WithLayer2overlayVPNs,theserviceproviderisnotawareofcustomerroutingandhasnoinformationabout
customerroutes.
F.ItissimpletoimplementLayer2overlayVPNsbecausetheCustomerEdge(CE)routerjustneedsaconnectionto
theServiceProvider'sProviderEdge(PE)router.
Answer:
BDE
3.WhataretwodrawbackswhentheInternetisaccessedthroughadedicatedsubinterfaceimplementation?
(Choose
two.)
A.TheVRFwillleakroutesintotheglobalroutingtable.
B.TheProutermustrunbothanIGPandBGP.
C.ThePEroutersmustperformInternetrouting.
D.AlimitedsetofInternetserviceswillbeimplemented.
E.AseparatephysicallinkorspecificWANencapsulationisrequired.
Answer:
CE
4.WhichcomponentofMPLSarchitectureisasimplelabel-basedforwardingenginethatisindependentofthetypeof
routingprotocolorlabelexchangeprotocol?
A.controlplane
B.dataplane
C.routingplane
D.forwardingplane
Answer:
B
5.Refertothediagram.WhatproblemcanbecausedbythesecondProutersummarizingtheloopbackaddressof
theegressPErouter?
A.ThefirstProuterwillbefacedwithaVPNlabelwhichitdoesnotunderstand.
B.ThesecondProuterwillbefacedwithaVPNlabelwhichitdoesnotunderstand.
C.TheegressPErouterwillnotbeabletoestablishalabelswitchpath(LSP)totheingressPErouter.
D.Alabelswitchpath(LSP)willbeestablishedfromtheingressPEroutertotheegressPErouter,aneventthatis
notdesirable.
E.TheingressPErouterwillnotbeabletoreceivetheVPNlabelfromtheegressPErouterviaMP-IBGP.
Answer:
B
6.Forwhichpurposeisthecommandmplsldpmaxhopsused?
A.InlargeATM-MPLSnetworks,theLFIBcanbecometoolargeanditmaybenecessarytolimitthemaximum
diameteroftheMPLSLSPs.
B.Becausedownstream-on-demandlabelallocationuseshopcounttocontrolloopdetection,itmaybenecessaryto
limitthemaximumdiameteroftheMPLSnetwork.
C.Becauseend-to-enddelaycancauseproblemswithsomevoiceapplications,itmaybenecessarytolimitthe
maximumdiameteroftheMPLSnetwork.
D.WheninterconnectinglargeframemodeMPLSandcellmodenetworksitmaybenecessarytolimitthemaximum
networkdiametertopreventforwardingloops.
Answer:
B
7.Inacentralservicestopology,whichroutesdoclientVRFscontain?
A.routesfromtheclientsite,butnotfromtheserversite
B.routesfromtheserversite,butnotfromtheclientsite
C.routesfromboththeclientsiteandtheserversite
D.onlyEBGProutesfromeithertheclientsiteortheserversite
Answer:
C
8.TheexhibitshowsatopologywherethecustomerisusingInternetaccessthroughacentralfirewallattheircentral
site.Ifthecustomer'sMPLSVPNandtheInternetaccesstrafficsharethesameserviceproviderbackbone,which
twoofthefollowingstatementsaretrue?
(Choosetwo.)
A.CustomerInternettrafficcancrosstheserviceproviderbackbonetwice,firstasVPNtrafficandthenasInternet
traffic.
B.EachcustomersiteCEroutermustperformNATifthecustomerisusingprivateIPaddresses.
C.Suboptimalroutingofthecustomer'sVPNtrafficwilloccur.
D.ThePErouterswillneedtoexchangebothVPNv4andIPv4BGProutingupdates.
E.BGPmustbeusedastheroutingprotocolbetweentheCEandPErouters.
Answer:
AD
9.Inthediagram,Internetaccessisthroughadedicatedsubinterfaceimplementation.Whichofitsroutingtableswill
PE-2usetoforwardpacketsfromSite-2toSite-1?
A.theglobalroutingtable
B.theVPNv4routingtable
C.theVRFAroutingtable
D.theVRFAFIB
E.thePE-IGroutingtable
Answer:
C
10.WhichstatementistrueaboutoverlappingVPNs?
A.SitesthatparticipateinmorethanoneVPNimportrouteswithRTsfromanyVPNinwhichtheyparticipateand
exportrouteswithRTsforallVPNsinwhichtheyparticipate.
B.SitesthatparticipateinmorethanoneVPNimportrouteswithRTsforallVPNsinwhichtheyparticipateand
exportrouteswithRTsfornoneoftheVPNsinwhichtheyparticipate.
C.SitesthatparticipateinmorethanoneVPNonlyimportrouteswithRTsforallVPNsinwhichtheyparticipate.
D.NoneoftheabovestatementsarecorrectregardingoverlappingVPNs.
Answer:
A
11.Refertothediagram.HowmanyVRFtablesareneededtosupportthreeVPNs(CustomerA,CustomerB,anda
VoIPVPN)withthefollowingrequirements:
A.1VRF
B.3VRFs
C.4VRFs
D.5VRFs
E.7VRFs
Answer:
D
12.WhichkindoflinkdoesaLayer3overlayVPNuse?
A.emulatedpoint-to-point
B.dedicatedpoint-to-point
C.point-to-multipoint
D.permanentvirtualcircuits
Answer:
A
13.Inthediagram,theInternetisaccessedthroughadedicatedInternetVPNimplementation.Whichroutingtable
willPE-IGusetoforwardpacketsfromtheInternettoSite-2?
A.Globalroutingtable
B.VPNv4routingtable
C.VRFAroutingtable
D.VRFInternetroutingtable
Answer:
D
14.WhatistrueabouthowMPLSimpl
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