ccna 4 discovery chapter 6

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

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

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‐if)#exit

RTA(config)#routereigrp101

RTA(config‐router)#noauto‐summary





6

WhichtwoarebestpracticesforcreatinganewIPaddressingschemeforanetwork?(Choosetwo.)

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.

8

Refertotheexhibit.Whichsetofroutercommandsisrequiredtoturnonunequal‐costloadsharingsothatRTRAselectsthepathA‐B‐EandthelowestcostpathA‐C‐EtotheInternet?

RTRA(config)#routereigrp1

RTRA(config‐router)#variance2


RTRA(config‐router)#variance1


RTRA(config‐router)#maximum‐paths2


RTRA(config‐router)#maximum‐paths1

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.

11

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.

14

Whatisagooddesignpracticewhendevelopingahierarchicaladdressingscheme?

AddressthenodesintheAccessLayerandworktowardtheCoreLayer.

AssignaddressestotheCoredevicesbeforeplanningtheaddressingschemefortheserverfarm.

Determinewherestaticallyconfiguredaddressingwillbeimplemented.

Determinewhatpercentageofdevicesarewiredandwhatpercentageofdevicesarewireless.

15

AnetworkengineerresearchedwhethertherearemechanismsavailabletohelpwiththetransitionfromanIPv4addressingstructuretoIPv6.Whatthreeoptionsdidtheengineerfind?(Choosethree.)

AprotocoltranslationmechanismallowscommunicationbetweentheIPv4andIPv6networks.

ApacketanalyzerdeterminestheaddressingstructureandconvertsittotheappropriateIPv4orIPv6scheme.

NewCoredevicesthatsupportIPV6mustbepurchased.

AprotocolconverterchangesIPv4packetsintoIPv6packetsandviceversa.

Adual‐stacknetworkdesignallowsbothIPv4andIPv6addressingtobeusedonallnetworkdevices.

TunnelingallowsIPv4packetstobeencapsulatedsothattheycantraverseIPv6networksandvice

16

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


QA‐172.16.1.127

Sales‐172.16.63.255

Admin‐172.16.31.255


QA‐172.16.1.255

Sales‐172.16.32.255

Admin‐172.16.31.0


17

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

18

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

20

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

22

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



172.17.48.128/25sales

172.17.48.0/26research



172.17.5.0/24sales

172.17.6.0/26research



172.17.4.0/26sales

172.17.4.128/25research

23

Refertotheexhibit.WhatisthefirstusableIPaddressthatcanbeassignedtothewgroup3switch?

172.16.50.96/27

172.16.50.97/27

172.16.50.98/27

172.16.50.99/27

ccna 4 discovery chapter 6

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