ccna 4 discovery chapter 6
TRANSCRIPT
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1
WhatisanotherformatfortheIPv6address1080:0000:0000:0000:0000:0000:1267:01A2?
1080::1267:01A2
1080:0:0:0:0:1267:01A2
1080::0:1267:01A2
1080:::::1267.01A2
2
Whichnetworkconfigurationwouldrequiretheuseofthenoauto‐summarycommand?
withRIPversion1,toenablesubnettingonalocalnetwork
withRIPversion2,toenableclassfulrouting
withRIPversion1,whendiscontiguousnetworksexist
withRIPversion2,whendiscontiguousnetworksexist
3
Whatbestdescribesadiscontiguousnetwork?
combinesseveralclassfullnetworkingaddress
containsmorethanoneroutetoadestination
implementsmorethanoneroutingprotocol
separatedfromtherestofthehierarchicalgroupbyanothernetwork
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4
Refertotheexhibit.WhichsubnetwillprovidesufficientaddressesfortheProductionnetworkwithminimalwaste?
172.16.0.192/26
172.16.0.192/27
172.16.0.224/26
172.16.0.160/26
172.16.0.144/27
5
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Refertotheexhibit.ThenetworkadministratorwantsrouterRTAtosendonlythesummarizedrouteof10.10.0.0/16toRTC.Whichconfigurationaccomplishesthis?
RTA(config)#interfaces0/0
RTA(config‐if)#ipsummary‐addresseigrp10110.10.0.0255.255.0.0
RTA(config‐if)#exit
RTA(config)#routereigrp101
RTA(config‐router)#noauto‐summary
RTA(config)#interfaces0/1
RTA(config‐if)#ipsummary‐addresseigrp10110.10.0.0255.255.0.0
RTA(config‐if)#exit
RTA(config)#routereigrp101
RTA(config‐router)#noauto‐summary
RTA(config)#interfaces0/0
RTA(config‐if)#ipsummary‐addresseigrp10110.10.0.0255.255.0.0
RTA(config)#interfaces0/1
RTA(config‐if)#ipsummary‐addresseigrp10110.10.0.0255.255.0.0
6
WhichtwoarebestpracticesforcreatinganewIPaddressingschemeforanetwork?(Choosetwo.)
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Planandallowforsignificantgrowth.
Assignaddressestotheaccesslayerbeforeanyotherlayer.
Plantheentireaddressingschemebeforeassigninganyaddresses.
Beginwiththeaccesslayernetworksummaryaddressesandworktotheedge.
Plantheaddressingschemetomeetthecurrentminimumrequirementneeds.
Implementstaticallyassignedaddressestoallhostsinthedistributionlayerfirst.
7
AnadministratorisconfiguringIPv6onarouter.Thestepsthathavealreadybeencompletedare:
1.ActivateIPv6trafficforwarding.
2.ConfigureIPv6addresses.
3.GloballyconfigureRIPng.
WhatistheremainingsteptocompletetheactivationofRIPng?
Entertheipv6routerripnamecommandandthenusenetworkstatementstoactivateRIPngontheinterfaces.
Entertheipv6routerripnamecommandandthenspecifywhichinterfacesrunRIPng,whicharepassive,andwhichonlyreceive.
EntertheinterfacemodeforeachIPv6interfaceandenableRIPngwiththeipv6ripnameenablecommand.
EntertheinterfacemodeforeachIPv6interfaceandenablethemulticastgroupFF02::9,andthenactivateRIPnggloballyusingtheipv6routerripnamecommand.
Entertherouterripcommand,andthenactivateRIPngusingtheversioncommand.RIPngthenautomaticallyrunsonallIPv6interfaces.
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Refertotheexhibit.Whichsetofroutercommandsisrequiredtoturnonunequal‐costloadsharingsothatRTRAselectsthepathA‐B‐EandthelowestcostpathA‐C‐EtotheInternet?
RTRA(config)#routereigrp1
RTRA(config‐router)#variance2
RTRA(config)#routereigrp1
RTRA(config‐router)#variance1
RTRA(config)#routereigrp1
RTRA(config‐router)#maximum‐paths2
RTRA(config)#routereigrp1
RTRA(config‐router)#maximum‐paths1
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9
Refertotheexhibit.AssumingthatthedefaultEIGRPconfigurationisrunningonbothrouters,whichstatementistrueaboutRouterAreachingthe2.2.2.0/24network?
Thenoauto‐summarycommandneedstobeissuedtodisableautomaticsummarization.
Thenetwork2.2.2.0commandneedstobeissuedtoensurethatRouterArecognizesthe2.2.2.0network.
EIGRPsupportsVLSMandautomaticallyrecognizesthe2.2.2.0network.
EIGRPdoesnotsupportVLSM;thereforeitcannotbeusedwithdiscontiguousnetworks.
10
WhatisacharacteristicofIPv6?
Anycasthasbeensubstitutedforunicast.
IPv6makesuseofmulticastandanycastinsteadofbroadcast.
IPv6usesa128digithexadecimalnumbertoprovidemoreaddressesthanIPv4provides.
EachPCinaLANmusthaveanIPv6localaddressthatisassignedbyanadministrator.
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HowmanybitsmakeupanIPv6address?
32
48
64
128
132
12
Anetworkdesignerisimplementinganewnetworkforacompany.ThedesignerisusingallnewCiscoequipmentandhasdecidedtoselectahierarchicalroutingprotocolforthenetwork.Thedesignerwishestominimizetrafficfromroutingupdatesbutalsoneedsfastroutingconvergenceintheeventofatopologychange.Also,theexistingIPaddressingschemerequiresthattheselectedprotocolsupportVLSM.Whichroutingprotocolshouldbechosen?
BGP
RIPv1
RIPv2
OSPF
EIGRP
13
WithRIPv2,whatshouldbedonetoavoidroutingproblemsifadiscontiguousnetworkexists?
Enterthenoauto‐summarycommand.
Configurefloatingstaticroutesoneachrouter.
Configureonlyclassfulmasksonrouterinterfaces.
InsteadofusingRIPv2,useEIGRPwithdefaultvalues.
Includesubnetmaskswhenconfiguringthedirectlyconnectednetworks.
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Whatisagooddesignpracticewhendevelopingahierarchicaladdressingscheme?
AddressthenodesintheAccessLayerandworktowardtheCoreLayer.
AssignaddressestotheCoredevicesbeforeplanningtheaddressingschemefortheserverfarm.
Determinewherestaticallyconfiguredaddressingwillbeimplemented.
Determinewhatpercentageofdevicesarewiredandwhatpercentageofdevicesarewireless.
15
AnetworkengineerresearchedwhethertherearemechanismsavailabletohelpwiththetransitionfromanIPv4addressingstructuretoIPv6.Whatthreeoptionsdidtheengineerfind?(Choosethree.)
AprotocoltranslationmechanismallowscommunicationbetweentheIPv4andIPv6networks.
ApacketanalyzerdeterminestheaddressingstructureandconvertsittotheappropriateIPv4orIPv6scheme.
NewCoredevicesthatsupportIPV6mustbepurchased.
AprotocolconverterchangesIPv4packetsintoIPv6packetsandviceversa.
Adual‐stacknetworkdesignallowsbothIPv4andIPv6addressingtobeusedonallnetworkdevices.
TunnelingallowsIPv4packetstobeencapsulatedsothattheycantraverseIPv6networksandvice
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Refertotheexhibit.Whatarethebroadcastaddressesforeachsubnet?
QA‐172.16.1.127
Sales‐172.16.32.255
Admin‐172.16.31.0
Development‐172.16.2.255
QA‐172.16.1.255
Sales‐172.16.63.255
Admin‐172.16.31.255
Development‐172.16.3.255
QA‐172.16.1.127
Sales‐172.16.63.255
Admin‐172.16.31.255
Development‐172.16.3.255
QA‐172.16.1.255
Sales‐172.16.32.255
Admin‐172.16.31.0
Development‐172.16.2.255
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Refertotheexhibit.Acompanyhasdecidedtoaddanewworkgroup.Ifthesubnettingschemeforthenetworkusescontiguousblocksofaddresses,whatsubnetisassignedtohostsconnectedtowgroup3?
172.16.3.12/29
172.16.3.16/29
172.16.3.20/29
172.16.3.24/29
172.16.3.32/29
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Refertotheexhibit.TheITmanagementisaddingthreeVLANstothewgroup3switch.Thecurrentsubnetwillbebrokendowntosupport14hostsforeachofthenewVLANs.WhatwillthenewsubnetmaskbefortheseVLANs?
255.255.255.192
255.255.255.240
255.255.248.0
255.255.255.224
255.255.240.0
255.255.255.248
19
Anetworkadministratorisusingthe10.0.0.0/8networkforthecompany.Theadministratormustcreateamaskingschemetosupport750usersatthemainofficeand620usersattheremoteoffice.Whatmaskshouldbeassignedtothe10.0.0.0/8networktopreservethemostaddresses?
255.255.255.0
/19
/20
255.255.252.0
/23
/21
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WhattwoadvantagesdoesCIDRprovidetoanetwork?(Choosetwo.)
dynamicaddressassignment
automaticrouteredistribution
reducedroutingupdatetraffic
easiermanagementofsummarization
automaticsummarizationatclassfullboundaries
21
Whichrangeincludesallavailablenetworksinthe192.168.8.0/21network?
192.168.8.0/24‐192.168.14.0/24
192.168.8.0/24‐192.168.15.0/24
192.168.8.0/24‐192.168.16.0/24
192.168.8.0/24‐192.168.17.0/24
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Anetworkadministratorisaskedtodesignanewaddressingschemeforacorporatenetwork.Presently,thereare850usersattheheadoffice,220usersatsales,425atmanufacturing,and50attheresearchsite.WhichstatementdefinesthecorrectVLSMaddressingmapwithminimalwasteusingthe172.17.0.0/16network?
172.17.0.0/20headoffice
172.17.1.0/21manufacturing
172.17.1.0/22sales
172.17.3.0/26research
172.17.48.0/19headoffice
172.17.16.0/20manufacturing
172.17.48.128/25sales
172.17.48.0/26research
172.17.0.0/22headoffice
172.17.4.0/23manufacturing
172.17.5.0/24sales
172.17.6.0/26research
172.17.2.0/22headoffice
172.17.3.0/23manufacturing
172.17.4.0/26sales
172.17.4.128/25research
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Refertotheexhibit.WhatisthefirstusableIPaddressthatcanbeassignedtothewgroup3switch?
172.16.50.96/27
172.16.50.97/27
172.16.50.98/27
172.16.50.99/27