ccnp題庫ccnp300-115v2.0選擇題CCNP戰(zhàn)報1000人超級

1、CCNP(300-115)題庫Number:300-PassingScore:790 TimeLimit:120File:CCNP(300-115)題庫Number:300-PassingScore:790 TimeLimit:120File: CCNP（300-115）題庫CCNP 題庫戰(zhàn)報1000群題庫戰(zhàn)報發(fā)布區(qū)：/forum-263-戰(zhàn)報，請隨時關注鴻正版題庫、看報，請聯(lián)系鴻鵠區(qū)報名思科- 試唯一，送/thread-419527-1-2015.3.9更新修改選擇題Q14、Q28、1. ExamQUESTIONWhat isumnumberoftcanbestackedusingCisco

2、4589Section: (none) UptoExamQUESTIONWhat isumnumberoftcanbestackedusingCisco4589Section: (none) Upto9CiscoCatalystswitchescanbestackedtogether tobuildsinglelogicalStackWiseswitchsince Cisco IOS XE Release 3.3.0SE. Prior to Cisco IOS XERelease3.3.0SE,upto4CiscoCatalystswitchescouldbestackedReference:

3、ht QUESTIONAnetworkengineer wantstoaddanewswitchtoanexistingswitchstack.Whichconfigurationmustbe added to the new switch before it can be added to the switch stack?Noconfigurationmustbeadded. stack IDIP VTP informationSection: (none) SwitchStackOfflineYoucanusetheofflineconfigurationfeaturetoitjoins

4、theswitchstack.Youcanconfigureinadvance the stack member number, the switch type, and the(tosupplyaconfigurationto)anewswitcher-tedtiscurrentlypartofthestack.Thetyoucreatetheswitchstackiscalledtheedconfiguration.Thetisaddedtotheswitchstacktre-ceivesthisconfigurationiscalledtheswitchYoumanuallycreate

5、theprovi type global configurationedconfigurationthroughtheswitchstack-member-d.Theconfigurationisautomaticallycreatedwhenaswitchisaddedtoaswitchstackandwhennoprovi configuration exists.Whenyouconfiguretededswitch(forle,aspartofatheswitchstackacceptstheconfiguration,andinformationherunningconfigurat

6、ion.erfacetedwiththeedswitchnotactive,operatesasifitisadministrativelyshutandthenoerfaceddoesnotreturnittoactiveservice.tedwiththeedswitchdoesnotappearthedisplayofthespecificfeature;forex le,itdoesnotheshowvlanuserdTheswitchstackretainstheedherunningandthenoerfaceddoesnotreturnittoactiveservice.tedw

7、iththeedswitchdoesnotappearthedisplayofthespecificfeature;forex le,itdoesnotheshowvlanuserdTheswitchstackretainstheedherunningconfigurationwhetherornottheedswitchispartofthestack.Youcansaveedconfigurationtothestartupconfigurationyenteringthecopyrunning-configstartup- d.Thestartupconfigurationttheswi

8、tchstackcanreloadandcanusethesavedinformationwhetherornottheswitchispartoftheswitchEffectsofAddingaedSwitchtoaSwitchWhenyouaddaedswitchtotheswitchstack,thestack app seithertheconfigurationorthedefaultconfiguration.Table5-1liststhetoccurwhentheswitchstackcomparestheedconfigurationwiththeedTable5-1Res

9、ultsofComparingtheedConfigurationwiththeedScenarioThestackmembernum-1.IfthestackmembernumberTheswitchstackapp sbersandthetypesoftheedswitchtheedconfigura-match.matchesthestackmembernum-tiontheedheedconfigura-switchandaddsit tothetiononthestack,and2.Iftheswitchtypeoftheprovi- the stack.edatchestheswi

10、tchheedconfigura-tionThestackmembernum-1.IfthestackmembernumberTheswitchstackapp sbersmatchbutswitchoftheedswitchthedefaultconfigurationtotypesdonotmatch.matchesthemembernum-theprovi the stack.edswitchandheedconfigura-tiononthestack,butaddsit2.Theswitchtypeoftheprovi-Theedconfigura- ed the newedswit

11、chdoesnotmatchthetionchangedtoreflectswitchtype configurationontheheThestackmembernum-Theswitchstackapp s berisnothepro-thedefaultconfigurationedconfiguration.theedswitchandaddsit totheTheedconfigura-tionischangedtoreflectthenewThestackmembernum-ThestackmasterassignsanewTheswitchstackapp s berofthes

12、tackmembernumbertothepro-theedconfigura-switchisnedtiontotheedexistingstackmember.switchandaddsittotheThestackmembernumberstheswitchtypesIfthenewstackmembertionischangedtoreflectnumberoftheedswitchthenewmatchesthestackmembernum-heedconfigura-tiononthestack,Iftheswitchtypeoftheprovi- the stack.edatch

13、estheswitchheedconfigura-tionThestackmembernumbersTheswitchstackapp smatch,buttheswitchtypesdotheconfigurationtonotmatch:theprovi edswitchandaddsit totheIfthestackmembernumberoftheedswitchTheedconfigura-matchesthemember num- tion is changed to reflect berheprovi stack, butedconfigura-thenewinformati

14、on.tiononTheswitchtypeoftheprovi- on the stack.edswitchdoesnotmatchtheswitchheedThestackmembernum-Theswitchstackapp sberoftheThestackmembernum-Theswitchstackapp sberoftheedthedefaultconfigurationtoisnotfound hetheedswitchandedconfiguration.addsittothestack. QUESTIONWhatpercentageofbandwidthisreduced

15、whenastackcableis0Section: (none) Explanation:PhysicalSequentialLinkageTheswitchesarephysicallyconnectedsequentially,asshownFigure3.Abreakinanyoneofthecableswillhestackbandwidthbeingreducedtohalfofitscapacity. Subsecond timing mechanisms detect traffic problems and immediayinstitutefailover.This mec

16、hanism restores dual pathflow when the timing mechanisms detect renewed activity onthe cable. Figure 3. Cisco StackWise Technology Resi nt CablingQUESTIONRefertothe Whichsetofconfigurationswillresultinallportsonbothswitche csfullyo switch1 channel-group 1 mode active switch2 channel-group 1 mode aut

17、o switch1channel-group1modedesirableswitch2channel-group1modepassive switch1 channel-group 1 mode on switch2 channel-group 1 mode autoswitch1channel-group1modeWhichsetofconfigurationswillresultinallportsonbothswitche csfullyo switch1 channel-group 1 mode active switch2 channel-group 1 mode auto swit

18、ch1channel-group1modedesirableswitch2channel-group1modepassive switch1 channel-group 1 mode on switch2 channel-group 1 mode autoswitch1channel-group1modedesirableswitch2channel-group1modeSection: (none) Thedifferentetherchannelmodesaredescribed Mode Descriptionheactiveoanactivenegotiatinge,inwhichta

19、rtsnegotiationsbysendingLACPautoosivenegotiatinge,inwhicherfacere-spondstopacketsitreceivesbutdoesnotstartPAgPpacketnegotia-ThissettingminimizestheofPAgPdesirablePla oanactivenegotiatinge,inwhichtartsnegotiationsbysendingPAgPonoanEtherChannelwithoutPAgPorLACP.Withtheonmode,aEtherChannelexistsonlywhe

20、nerfaceheonisconnectedtoerfaceheonpassivePla osivenegotiatinge,inwhicherfacere-spondstotitreceives,butdoesnotstartLACPpacketne-gotiation.Thissettingminimizesthe of LACP packets.BoththeautoanddesirablePAgPmodestonegotiatewithto iftheycanformanEtherChannelbasedoncriteriapeedand,forLayer2EtherChannels,

21、trunkingeandVLANcanformanEtherChannelwhentheyareindifferentPAgPmodesaslongasthemodescompatible.ForhedesirablemodecanformanEtherChannelt heorautocanformanEtherChannelwhentheyareindifferentPAgPmodesaslongasthemodescompatible.ForhedesirablemodecanformanEtherChannelt heorautoheautomodecanformanEtherChan

22、nelhedesirableheautomodecannotformanEtherChanneltishemodebecausetartsPAgPheontisaddedtoaportchannelisforcedtohavethesamecharacteristicsthealreadyexistingonheQUESTIONRefertothe HowcanthetismirroredouttheGigabitEthernet0/48portbelimitedtoonlytisortransmittedinVLAN10ontheGigabitEthernet0/1Changetheconf

23、iguration t itisamemberofVLANAddanslisttoGigabitEthernet0/48tofilterouttisnotinVLANApplythemonitorfiltergloballytoallowonlytrafficfromVLANChangethemonitorsourcetoVLAN10insteadoftheSection: (none) Tostartanewflow-basedSPAN(FSPAN)orflow-basedRSPAN(FRSPAN)sourceor,ortolimit (filter)SPANsourcetraffictoV

24、LANs, usethemonitorfilterglobalUsageYoucansetaumoftwolocalSPANsandRSPANs.Youhaveatotalof66SPANandRSPANsonaswitchswitchstack.YoucanmonitortrafficonasingleVLANoronaseriesorrangeofportsorVLANs.eriesorrangeof VLANsbyusingthe,| -IfyouspecifyaseriesofVLANs,youmustenteraspacebeforeandafterthecomma.Ifyouspe

25、cifya range of VLANs, you must enter a space before and after thehyphen(-).VLANfilteringrefersyzingnetworktrafficonaselectedsetofVLANsontrunkIfyouspecifyaseriesofVLANs,youmustenteraspacebeforeandafterthecomma.Ifyouspecifya range of VLANs, you must enter a space before and after thehyphen(-).VLANfilt

26、eringrefersyzingnetworktrafficonaselectedsetofVLANsontrunkports.Bydefault,allVLANsaremonitoredontrunkports.Youcanusethemonitor_numberfiltervlanvlan-dtolimitSPANontrunksourceportstoonlythespecifiedVLANmonitoringandVLANfilteringaremutuallyexclusive.IfaVLANis asource,VLANfilteringcannotbe enabled. If V

27、LAN filtering is configured, a VLAN cannotea QUESTIONRefertothe Anetworkengineerwantsyze ingandoutgoingpacketsfort istoan sswitch.Whichthreeitemsmustbeconfiguredtomirrortraffictoapackettconnectedtothedistributionswitch?(ChooseAmonitoronthedistributionswitcherfaceasthesourceandtheSPANVLANas theAremot

28、eSPANVLANonthedistributionandslayerAmonitorastheAmonitoronthesswitchourceandtheremoteSPANonthedistributionswitchremoteSPANVLANasthesourceanderfaceastheAmonitorastheAmonitoronthesswitchremoteSPANVLANsourceandtheonthedistributionswitcherfaceasthesourceandaerfaceastheSection: (none) Explanation: You ca

29、nyzenetworktrafficpassingthroughportsorVLANsbyusingSPANorRSPANsendacopyofthetraffictoortontheswitchoronanothersbeenconnectedtoyzerorothermonitoringorsecuritydevice.SPANcopies(ormirrors)trafficreceivedor(orboth)onsourceportsorsourceVLANstoadestinationportysis.RSPANsupportsports,sourceVLANs,anddestina

30、tionportsondifferentswitches(ordifferentswitchstacks),remotemonitoringofmultipleswitchesacrossyournetwork.ThetrafficforeachRSPANisoverauser-specifiedRSPANtisdedicatedtRSPANinallparticipatingTheRSPANtrafficfromthesourceportsorVLANsiscopied trunk ports carrying the RSPAN VLAN to a destination sesotheR

31、SPANVLANandforwardedmonitoringtheRSPANVLAN.RSPANve ortsorVLANsasRSPAN.Thedestinationisalways release/12-QUESTIONAfteranEtherChannelisconfiguredntwoCiscoerfaceportchannelRSPANve ortsorVLANsasRSPAN.Thedestinationisalways release/12-QUESTIONAfteranEtherChannelisconfiguredntwoCiscoerfaceportchannel1hedo

32、wn se.SwitchAisconfiguredwithchannel-group1modeactive, whileSwitchBisconfiguredwith channel-group 1 mode desirable. Why is the EtherChannel bundle not working?TheswitchesareusingmismatchedEtherChannelnegotiationTheswitchportsarenotrunkingLACPprioritymustbeconfiguredonbothThechannelentifiermustbediff

33、erentforSwitchAandSwitchSection: (none) Herewehaveasituationwhereoneswitchisusingactivemode,whichisanLACPmode,andtheotheris using desirable, which is a PAGP mode. You can not mixtheLACPandPAGPprotocolstoformanetherchannel.Hereisasummaryofthevariousetherchannel Mode Descriptionautoa osivenegotiatinge

34、,inwhichtheportrespondstoPAgPpacketsitbutdoesnotstartPAgPpacketnegotiation.ThisminimizestheofPAgPThismodeisnotsupportedwhentheEtherChannelmembersarefromdiffer-entswitches stack (cross-stack EtherChannel).he a oanactivenegotiatinge,inwhichtheportstartsnegotia-tionswithportsbysendingPAgPThismodeisnots

35、upportedwhentheEtherChannelmembersarefromdiffer-entswitches stack (cross-stack EtherChannel).heEtherChannelLACPModeactivea oanactivenegotiatingeinwhichtheportstartsnegotia-tionswithbysendingLACPpassiveaosivenegotiatingeinwhichtheportrespondstoLACPt receives,butdoesnotstartLACPpacketnegotiation.This

36、setting minimizes the transmisof LACP packets. QUESTIONAnEtherChannelbundlehasbeenestablishednaCworkadministratortonlyoneoftheEtherChannellinksisbeingutilizedtoreachtheserver.What shouldbedoneontheCiscoswitchtoallowforbetterEtherChannelutilizationtothe corporate web server?A. EnableCiscoExpressForwa

37、rdingtoallowformoreeffectivetrafficsharin ertheAdjusttheEtherChannelload-balancingmethodbasedondestinationIPDisablespanningtreeontareheEtherChannelUselink-etrackingtoallowforimprovedloadbalancingoftrafficuponlinkAdjusttheEtherChannelload-balancingmethodbasedondestinationIPDisablespanningtreeontarehe

38、EtherChannelUselink-etrackingtoallowforimprovedloadbalancingoftrafficuponlinkfailuretotheAdjusttheEtherChannelload-balancingmethodbasedonsourceIPSection: (none) Explanation:EtherChannelloadbalancingcanuseMACaddresses,IPaddresses,orLayer4port numbers, and either source mode, destination mode, or both

39、. The mode you select app s to alltyouconfigureontheswitch.Usethet providesthegreatestvarietyinconfiguration.Forle,ifthetrafficonachannelonlygoestoasingleMACaddress(whichisthehisle,sincealltrafficisgoingtothesamewebserver),useofthedestinationMAChechoiceofthesamehechanneleachtime.Useofsourceaddresses

40、orIPcanresultinabetterloadbalance.Reference:ht QUESTIONerfaceFastEthernet0/1isconfiguredasatallowsallVLANs.d configuredglobally:monitor2filtervlan1 -8,39, WhatistheresultoftheAllVLANtraffic issenttotheSPANTrafficfromVLAN4is ttotheSPANFilteringatrunkedSPANporteffectivelydisablesSPANoperationsforallTh

41、etrunksnativeVLANmustbechangedtosomethingnVLANTrafficfromVLANs1to8,39,and52isreplicatedtotheSPANdestinationSection: (none) Explanation:ThemonitorsesdisusedtospecifywhichVLANSaretobeportusingSPAN.ThisleshowshowtomonitorVLANs1through5andVLAN9whentheSPANis aerface:Switch(config)#monitor2filtervlan1 -5,

42、 9Reference: /c/en/us/td/docs/switches/lan/catalyst4500/12-2/25ew/configuration/guide/conf/span.html/ QUESTIONAnetworkengineerinconsistentCiscoDiscoveryProtocolneighborsaccordingtothetisprovided.TheengineeronlyasingletusesCiscoDiscoveryProtocol,butsseveralroutingneighborrelationships.Whatwouldcauset

43、heoutputtoshowonlythesingleTheroutersareconnectedviaaLayer2IProutingisdisabledonneighboringCiscoExpressForwardingisenabled.CiscoDiscoveryProtocoladvertisementsareinconsistentnthelocalandremote.Section: (none) Ifalloftheroutersareconnectedtoeachotherusingalayer2switch,theneachrouterwillonlyhavesingle

44、switchtitconnectstoasitsIfalloftheroutersareconnectedtoeachotherusingalayer2switch,theneachrouterwillonlyhavesingleswitchtitconnectstoasitsneighbor.thoughmultipleroutingneighborscanbeformedoveralayer2network, onlythephysicalport connects to will be seen as a CDP neighbor. CDP can be usedttodetermine

45、thephysicaltopology,butnotsarilythelogicalQUESTIONAftertheionofseveraldifferenttypesofswitchesfromdifferentvendors,anetworktdirectlyconnectedtuseCiscoDiscoveryProtocolarenotvisible.WhichneutralprotocolcouldbeusedtoresolvethisLocalAreaLinkLayerDiscoveryProtocol DirectedResponseSection: (none) TheLink

46、LayerDiscoveryProtocol(LLDP)isavendor-neutrallinkernetSuiteusedbynetworkforadvertisingtheircapabilities, andneighborsonanIEEE802localareanetwork,principallywiredEthernet.LLDPperforms functions similar to several proprietary protocols, such astheCiscoDiscoveryProtocol(CDP).Reference: QUESTIONSeveraln

47、ewswitcheshavebeenaddedtotheexistingnetworkasVTPc nts.Allofthenewhavebeenconfiguredwiththesame,password,and.However,VLANsarepassingfromtheVTPserver(existingnetwork)totheVTPc nts.Whatmust bedonetofixRemovetheVTP namefromallswitcheswithnullandthenreplaceitwiththeConfigureadifferentnativeVLANonallnewt

48、areconfiguredasVTPc oneofthenewswitchestobetheVTPserverandduplicateinformationfromtheexisting tallerconnectsareconfiguredastrunkstoallowVTPinformationtoSection: (none) VTPallowsswitchestoadvertiseVLANinformationnothermembersofthesame.VTPallowsaconsistentviewoftheswitchednetworkallswitches.Therearese

49、veralreasonswhytheVLANinformationcanfailtobeexchanged.Verifyitemsifswitches t runVTPfailtoexchangeVTPinformationonly passesthrough atrunk port.Make sure configured as trunks and are actually trunking. Make suret allterconnectswitchestifEtherChannelsarecreatedn switches,onlyLayer2EtherChannelspropaga

50、teVLANMakettheVLANsareactiveinallthe.OneoftheswitchesmustbetheVTPserverinaVTP switch in order to have them propagated to the VTPMakettheVLANsareactiveinallthe.OneoftheswitchesmustbetheVTPserverinaVTP switch in order to have them propagated to the VTP.AllVLANchangesmust bedoneonc nts. Thenamemustmatc

51、handitiscasesensitive.CISCOandciscoaretwoMaketnopasswordissetntheserverandc nt.Ifanypasswordisset,makethepasswordisthesameonbothsides. QUESTIONAfterimplementingVTP,theextendedVLANsarenotbeingpropagatedtootherVTPswitches.What should be configured for extended VLANs?VTPdoesnotsupportextendedVLANsandsh

52、ouldbemanuallyaddedtoallEnableVTP3,whichsupportsextendedVLANVTPauthenticationisrequiredwhenusingextendedVLANsbecauseoftheirabilitytocausenetwork tallswitchesrunthesameCiscoIOS.ExtendedVLANswillnotpropagatedifferentIOSswhenextendedVLANsareinSection: (none) VTP1andVTP2donotpropagateconfigurationinform

53、ationforextended-range(VLANnumbers1006to4094).Youmustconfigureextended-rangeVLANsmanuallyoneachnetwork VTP3supportsextended-rangeVLANs(VLANnumbers1006to4094).Ifyouconvertfrom3toVTP2,thehe1006to4094areremovedfromVTPcontrol.Reference:ht catalyst6500/ios/15.1SY/config_guide/sup2T/vtp .pdfQUESTIONRefert

54、othe SwitchA,B,andCaretrunkedtogetherandhavebeenproperly configuredforVTP.SwitchCreceives VLANinformationfrom theVTP serverSwitchA, but SwitchB does notreceiveany VLANinformation. What is the most probable cause of this behavior?SwitchBis SwitchBisconfiguredwi Switch B.ransparentnsporttoSwitchA,whil

55、eSwitchCisconfiguredtrunkportTheVTPSwitchBis SwitchBisconfiguredwi Switch B.ransparentnsporttoSwitchA,whileSwitchCisconfiguredtrunkportTheVTPnumberoftheSwitchBisntofSwitchThetrunknSwitchAandSwitchBisSection: (none) VTPtransparentswitchesdonot participateinVTP.AVTPtransparentswitchdoesnot advertiseit

56、sVLAN configuration and does not synchronize its VLANconfigurationbasedonreceivedadvertisements,buttransparentswitchesdoforwardVTPttheyreceiveouttheirtrunkportsinVTPVer QUESTIONRefertothe SwitchA,B,andCaretrunkedtogetherandhavebeenproperlyconfiguredforVTP.SwitchBhasVLANs,butSwitchCisnotreceivingtraf

57、ficfromcertainVLANs.WhatwouldcausethisAVTPauthenticationmismatchoccurrednSwitchAandSwitchTheVTPnumberofSwitchBisntofSwitchVTPpruningisconfiguredgloballyonallswitchesanditremovedVLANsfromthetrunk connected to Switch C.ThetrunknSwitchAandSwitchBistSection: (none) VTPpruningincreasesnetworkandwidthbyre

58、strictingfloodedtraffictothosetrunktthetrafficmustusetoreachthedestination.WithoutVTPpruning,aswitchfloodsbroadcast,multicast,andunknownunicasttrafficacrossalllinkswithinaeventhoughreceivingmightdiscardthem.VTPpruningisdisabledbydefault.VTPpruningblocksunneededfloodedtrafficVLANsontrunkt areheeligib

59、lelist.ThebestexplanationforwhyswitchCisnot seeingtrafficfromonlysomeoftheVLANs,is VTP pruning has been configured.tQUESTIONAftertherecentupgradeoftheswitchinginfrastructure,thenetworkengineerttheporttwereonceblockingarenowdefinedasalternateandbackup.WhatisthereasonforThenewswitchesareusingRSTPinste

60、adoflegacyIEEE802.1DIEEE802.1DSTPandPortFas Catalyst switches.vebeenconfiguredbydefaultonallnewlyimplementedTheadministratorhasThenewswitchesareusingRSTPinsteadoflegacyIEEE802.1DIEEE802.1DSTPandPortFas Catalyst switches.vebeenconfiguredbydefaultonallnewlyimplementedTheadministratorhasdefinedtheswitc