ccna考试题库301350.docx

ccna考试题库301350.docx

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ccna考试题库301350

QUESTION301

HowmanybitsarecontainedineachfieldofanIPv6address?

A.24

B.4

C.8

D.16

QUESTION302

Bydefault,eachportinaCiscoCatalystswitchisassignedtoVLAN1.Whichtworecommendationsarekeytoavoidunauthorizedmanagementaccess?

（Choosetwo.）

A.CreateanadditionalACLtoblocktheaccesstoVLAN1.

B.MovethemanagementVLANtosomethingotherthandefault.

C.MoveallportstoanotherVLANanddeactivatethedefaultVLAN.

D.Limittheaccessintheswitchusingportsecurityconfiguration.

E.UsestaticVLANintrunksandaccessportstorestrictconnections.

F.ShutdownallunusedportsintheCatalystswitch.

QUESTION303

WhichCiscoCatalystfeatureautomaticallydisablestheportinanoperationalPortFastuponreceiptofaBPDU?

A.BackboneFast

B.UplinkFast

C.RootGuard

D.BPDUGuard

E.BPDUFilter

QUESTION304

WhichtypeofcableisusedtoconnecttheCOMportofahosttotheCOMportofarouterorswitch?

A.crossover

B.straight-through

C.rolled

D.shieldedtwisted-pair

QUESTION305

Whatisknownas"one-to-nearest"addressinginIPv6?

A.globalunicast

B.anycast

C.multicast

D.unspecifiedaddress

QUESTION306

WhichoptionisavalidIPv6address?

A.2001:

0000:

130F:

:

099a:

:

12a

B.2002:

7654:

A1AD:

61:

81AF:

CCC1

C.FEC0:

ABCD:

WXYZ:

0067:

:

2A4

D.2004:

1:

25A4:

886F:

:

1

QUESTION307

WhichlayeroftheOSIreferencemodelusesthehardwareaddressofadevicetoensuremessagedeliverytotheproperhostonaLAN?

A.physical

B.datalink

C.network

D.transport

QUESTION308

WhichlayeroftheOSIreferencemodelusesflowcontrol,sequencing,andacknowledgementstoensurethatreliablenetworkingoccurs?

A.datalink

B.network

C.transport

D.presentation

E.physical

QUESTION309

WhatistheprinciplereasontouseaprivateIPaddressonaninternalnetwork?

A.Subnetstrategyforprivatecompanies.

B.Manageandscalethegrowthoftheinternalnetwork.

C.ConservepublicIPaddressessothatwedonotrunoutofthem.

D.Allowaccessreservedtothedevices.

QUESTION310

WhichIPaddresscanbeassignedtoanInternetinterface?

A.10.180.48.224

B.9.255.255.10

C.192.168.20.223

D.172.16.200.18

QUESTION311

WhatwillhappenifaprivateIPaddressisassignedtoapublicinterfaceconnectedtoanISP?

A.AddressesinaprivaterangewillbenotroutedontheInternetbackbone.

B.OnlytheISProuterwillhavethecapabilitytoaccessthepublicnetwork.

C.TheNATprocesswillbeusedtotranslatethisaddressinavalidIPaddress.

D.Severalautomatedmethodswillbenecessaryontheprivatenetwork.

E.AconflictofIPaddresseshappens,becauseotherpublicrouterscanusethesamerange.

QUESTION312

WhenisitnecessarytouseapublicIPaddressonaroutinginterface?

A.Connectarouteronalocalnetwork.

B.Connectaroutertoanotherrouter.

C.Allowdistributionofroutesbetweennetworks.

D.TranslateaprivateIPaddress.

E.ConnectanetworktotheInternet.

QUESTION313

Whatisthefirst24bitsinaMACaddresscalled?

A.NIC

B.BIA

C.OUI

D.VAI

QUESTION314

InanEthernetnetwork,underwhattwoscenarioscandevicestransmit?

（Choosetwo.）

A.whentheyreceiveaspecialtoken

B.whenthereisacarrier

C.whentheydetectnootherdevicesaresending

D.whenthemediumisidle

E.whentheservergrantsaccess

QUESTION315

WhichtermdescribestheprocessofencapsulatingIPv6packetsinsideIPv4packets?

A.tunneling

B.hashing

C.routing

D.NAT

QUESTION316

WhichstatementaboutRIPngistrue?

A.RIPngallowsforrouteswithupto30hops.

B.RIPngisenabledoneachinterfaceseparately.

C.RIPngusesbroadcaststoexchangeroutes.

D.TherecanbeonlyoneRIPngprocessperrouter.

QUESTION317

WhichstatementaboutIPv6istrue?

A.Addressesarenothierarchicalandareassignedatrandom.

B.OnlyoneIPv6addresscanexistonagiveninterface.

C.Thereare2.7billionaddressesavailable.

D.Broadcastshavebeeneliminatedandreplacedwithmulticasts.

QUESTION318

Whichlinefromtheoutputoftheshowipinterfacecommandindicatesalayer1problem?

A.Serial0/1isup,lineprotocolisdown

B.Serial0/1isdown,lineprotocolisdown

C.Serial0/1isup,lineprotocolisup

D.Serial0/1isadministrativelydown,lineprotocolisdown

QUESTION319

Anetworkadminwantstoknoweveryhopthepacketstakewhenheaccesses.Whichcommandisthemostappropriatetouse?

A.path

B.debug

C.trace

D.traceroute

QUESTION320

Whenahosttransmitsdataacrossanetworktoanotherhost,whichprocessdoesthedatagothrough?

A.standardization

B.conversion

C.encapsulation

D.synchronization

QUESTION321

Anadministratorattemptsatraceroutebutreceivesa"DestinationUnreadable"message.Whichprotocolisresponsibleforthatmessage?

A.RARP

B.RUDP

C.ICMP

D.SNMP

QUESTION322

WhichtwocommandscorrectlyverifywhetherportsecurityhasbeenconfiguredonportFastEthernet0/12onaswitch?

（choosetwo）

A.SW1#showswithportport-securityinterfaceFastEthernet0/12

B.SW1#showswithportport-secureinterfaceFastEthernet0/12

C.SW1#showport-secureinterfaceFastEthernet0/12

D.SW1#showrunning-config

QUESTION323

WhichcomponentofVPNtechnologyensuresthatdatacanbereadonlybyitsintendedrecipient?

A.dataintegrity

B.encryption

C.keyexchange

D.authentication

QUESTION324

Refertotheexhibit.Whatistheeffectoftheconfigurationthatisshown?

A.IttellstherouterorswitchtotryestablishanSSHconnectionfirstandifthatfailtousetelnet.

B.ItconfiguresacisconetworkdevicetousetheSSHprotocolonincomingcommunicationsviathevirtualterminalports.

C.ItallowssevenfailedloginattemptsbeforetheVTYlinesaretemporarilyshutdown.

D.Itconfiguresthevirtualterminallineswiththepassword030752180500.

E.ItconfiguresSSHgloballyforalllogins.

QUESTION325

Whichofthefollowingaretrueregardingthedebugoutputshowninthegraphic?

（choosetwo）

A.Thisrouterwasconfiguredwiththecommands:

RtrA（config）#routerrip

RtrA（config-router）#version2

RtrA（config-router）#network172.16.0.0

RtrA（config-router）#network10.0.0.0

B.Thisrouterwasconfiguredwiththecommands:

RtrA（config）#routerrip

RtrA（config-router）#network172.16.0.0

RtrA（config-router）#network10.0.0.0

C.Network10.0.0.0willbedisplayedintheroutingtable.

D.Network192.168.168.0willbedisplayedintheroutingtable.

E.Thisrouterwasconfiguredwiththecommands:

RtrA（config）#routerrip

RtrA（config-router）#network192.168.1.0

RtrA（config-router）#network10.0.0.0

RtrA（config-router）#network192.168.168.0

F.split-horizonwasdisabledonthisrouter.

QUESTION326

Thenetworkadministratorisaskedtoconfigure113point-to-pointlinks.WhichIPaddressingschemebestdefinestheaddressrangeandsubnetmaskthatmeettherequirementandwastethefewestsubnetandhostaddresses?

A.10.10.0.0/18subnettedwithmask255.255.255.252

B.10.10.0.0/25subnettedwithmask255.255.255.252

C.10.10.0.0/24subnettedwithmask255.255.255.252

D.10.10.0.0/23subnettedwithmask255.255.255.252

E.10.10.0.0/16subnettedwithmask255.255.255.252

QUESTION327

VLAN3isnotyetconfiguredonyourswitch.Whathappensifyousettheswitchportaccessvlan3commmandinterfaceconfigurationmode?

A.ThecommandisacceptedandtherespectiveVLANisaddedtovlandat.

B.Thecommandisrejected.

C.ThecommandisacceptedandyoumustconfiguretheVLANmanually.

D.Theportturnsamber.

QUESTION328

Whichparametercanbetunedtoaffecttheselectionofastaticrouteasabackup.whenadynamicprotocolisalsobeingused?

A.linkbandwidth

B.hopcount

C.linkcost

D.administrativedistance

E.linkdelay

QUESTION329

Refertotheexhibit.IntheFrameRelaynetwork,whichipaddresswouldbeassignedtotheinterfaceswithpoint-to-poinPVCs?

A.DLCI16:

192.168.10.1/24

DLCI17:

192.168.10.2/24

DLCI99:

192.168.10.3/24

DLCI28:

192.168.10.4/24

B.DLCI16:

192.168.10.1/24

DLCI17:

192.168.11.1/24

DLCI99:

192.168.10.2/24

DLCI28:

192.168.11.2/24

C.DLCI16:

192.168.10.1/24

DLCI17:

192.168.11.1/24

DLCI99:

192.168.12.1/24

DLCI28:

192.168.13.1/24

D.DLCI16:

192.168.10.1/24

DLCI17:

192.168.10.1/24

DLCI99:

192.168.10.2/24

DLCI28:

192.168.10.3/24

QUESTION330

Whywillaswitchneverlearnabroadcastaddress?

A.Broadcastframesareneversenttoswiches.

B.Broadcastaddressesuseanincorrectformatfortheswitchingtable.

C.Abroadcastaddresswillneverbethesourceaddressofaframe.

D.Broadcastsonlyusenetworklayeraddressing.

E.Abroadcastframeisneverforwardedbyaswitch.

QUESTION331

WichcommandcanyouusetomanuallyassignastaticIPV6addresstoarouterinterface?

A.ipv6addressPREFIX_1:

:

1/64

B.ipv6autoconfig2001:

db8:

2222:

7272:

:

72/64

C.ipv6autoconfig

D.ipv6address2001:

db8:

2222:

7272:

:

72/64

QUESTION332

TheEIGRPconfigurationintheGlencoerouterusesasinglenetworkstatement.FromtheoutputshowninthegraphwouldadvertisethesenetworksinEIGRP?

A.network172.26.168.0area478

B.network172.26.0.0

C.network172.26.168.1280.0.0.127

D.network172.26.168.128area478

QUESTION333

WhichIPsecsecurityprotocolshouldbeusedwhenconfidentialityisrequired?

A.AH

B.MD5

C.PSK

D.ESP

QUESTION334

Whatisthefunctionofthecommandswitchporttrunknativevlan999onaCiscoCatalystswitch?

A.ItdesignatesVLAN999foruntaggedtraffic.

B.ItblocksVLAN999traffi