JNCIAER Preassessment exam.docx

JNCIAER Preassessment exam.docx

《JNCIAER Preassessment exam.docx》由会员分享，可在线阅读，更多相关《JNCIAER Preassessment exam.docx（27页珍藏版）》请在冰点文库上搜索。

JNCIAERPreassessmentexam

1。

WhichJ-Webmenushouldyouusetoviewtherouter's"lastknowngood"configuration?

B

A.Configuration>ViewandEdit

B.Configuration>Rescue

C.Configuration>Rollback

D.Configuration>History

2。

WhichJ-Webwindowpaneallowsyoutoviewandmanagelicenses.D

A.Monitor

B.Configuration

C.Diagnose

D.Manage

3.WhichmajorJ-Webmenushouldyouusetoviewthephysicalhardwareintherouter?

D

A.Manage

B.Diagnose

C.Configuration

D.Monitor

4.YouareloggedintoanM10irouterasthelabuser.TheJ-Web8.0R2.8packageislocatedinyourhomedirectory.

WhichCLIcommandwouldinstalltheJ-Webinterface?

C

A.loadsoftwarejweb-8.0R2.8-signed.tgz

B.loadsoftware/home/lab/jweb-8.0R2.8-signed.tgz

C.requestsystemsoftwareaddjweb-8.0R2.8-signed.tgz

D.requestsystemsoftwareadd/home/lab/jweb-8.0R2.8-signed.tgz

5.WhichJ-Webmenudisplaystheamountoffreespaceontherouter'scompactflash?

C

A.Manage>System

B.Diagnose>Flash

C.Monitor>System

D.Monitor>Flash

6.Whatisthepurposeoftheservicesinterface?

A

A.Processestrafficusingclass-of-service.

B.Providesvariouslayer2andlayer3services.

C.UsedtobundleEthernetinterfacesonM-seriesrouters.

D.Allowsforsecureshellaccesstotherouter.

7.WhichdefinitionmostaccuratelydescribesVRRP?

A

A.Anelectionprotocolusedtodesignateoneofmultipleroutersasthemasterrouter,whichservesastheforwardingnext-hopfortheLAN.

B.AvirtualprotocolwhichmakesVPNcommunicationspossible.

C.AredundancyprotocolusedtoidentifytheactiveWANcircuit.

D.Alink-stateroutingprotocolusedinEthernetenvironments.

8.WhichthreedaemonsarecontainedintheJUNOSsoftware?

BCD

Thereare3correctanswers

A.VPN

B.RoutingProtocol

C.Management

D.Chassis

9.WhichtwostatementsregardingtheJUNOSsoftwareuserauthenticationmethodsarecorrect?

CD

Thereare2correctanswers

A.Multipleuserscanauthenticateusingacommonlocaluseraccount.

B.Onlyoneauthenticationmethodcanbeconfigured.

C.Multipleauthenticationmethodscanbeconfigured.

D.Allusersmustbeconfiguredlocallyontherouter.

10.WhichCLIcommanddisplaysthehardwarecurrentlyinstalledintherouter?

C

A.showchassisalarms

B.showsystemhardware

C.showchassishardware

D.showsystemenvironment

11.WhichstatementsaretrueregardingDHCPservicesandJ-seriesrouters?

BC

Thereare2correctanswers

A.J-seriesrouterscanoperateasaDHCP-relayagentonly.

B.J-seriesrouterscanoperateasaDHCPserver.

C.J-seriesrouterscanfunctionasaDHCP-relayagentandDHCPserversimultaneously.

D.J-seriesrouterscanrelayDHCPrequestsfromoneLANtoanother.

12.WhichCLIcommanddisplaysanyactivealarmsontherouter?

B

A.showsystemalarms

B.showchassisalarms

C.showsystemenvironment

D.showchassisenvironment

13.WhichconfigurationstatementcontactsaTACACS+serverwhentheprimaryRADIUSserverisunreachable?

C

A.[edit]system{authentication-order[radiustacacs+];}

B.[edit]authentication{login-order[radiustacplus];}

C.[edit]system{authentication-order[radiustacplus];}

D.[edit]authentication{login-order[radiustacplus];}

14.WhatarethreecharacteristicsoftheJUNOSsoftware?

ABC

Thereare3correctanswers

A.Containsamodularoperatingsystem.

B.Separateforwardingandcontrolplanes.

C.SinglesoftwaretrainforallM,TandJ-seriesrouters.

D.Containseasytoreadregistrykeys.

15.WhatstatementsaboutALGsaretrue?

Thereare2correctanswers

A.ALGsmonitorprotocolexchangesandperformaddressandporttranslationswithinthepayloadforcertainprotocols.

B.ALGsallowtheroutertointeractwithlayer4andabovewhenperformingtranslationservices.

C.ALGsarerequiredwheneverNATisused.

D.ALGsareonlyusedwhenPATisconfigured.

16.WhichtypeofIGPshouldyouusetoachievescalabilityinalargeenterprisenetwork?

B

A.distance-vectorprotocol

B.link-stateprotocol

C.Bellman-Fordprotocol

D.path-vectorprotocol

17.WhataretwoservicesprovidedbytheSDX?

AC

Thereare2correctanswers

A.customizedfirewallmodifications

B.anXMLinterfaceforrouterconfiguration

C.usagetrackingandaccounting

D.secureremoteaccesstotherouter

18.WhichstatementsaretrueregardingtheASM?

CD

A.TheASMsupportsonlylayer3services.

B.TheASMcomesstandardwithallM7iandM10irouters.

C.TheASMsupportsthelayer2andlayer3servicepackagessimultaneously.

D.TheASMisanoptionwhenorderingtheM7i.

19.YouhavearouterwhichdoesnothavetheJ-Webinterfaceinstalledbydefault.C

WhichCLIcommandinstallstheJ-Webpackage?

A.loadsystemsoftwarejweb-8.0R2.8-signed.tgz

B.installpackagejweb-8.0R2.8-signed.tgz

C.requestsystemsoftwareaddjweb-8.0R2.8-signed.tgz

D.packageaddjweb-8.0R2.8-signed.tgz

20.WhichVRRPconfigurationoptionmonitorsthestateofaninterfaceandiscapableofinitiatingachangeinmastershipifthemonitoredinterfacegoesdown?

C

A.snoop

B.monitor

C.preempt

D.track

21.WhichJUNOSsoftwarefeatureformsthebasisforJUNOScope?

B

A.J-Web

B.JUNOScript

C.BSDKernel

D.SDX

22.Whichconfigurationoptionallowsyoutoviewautoinstallationmessages?

A

A.traceoptions

B.debug

C.view

D.decode

23.WhichofthefollowingaddressassignmentoptionsareavailablewhenconfiguringNAT?

AB

Thereare2correctanswers

A.Static

B.Dynamic

C.One-to-one

D.One-to-many

24.WithintheJ-Webinitialsetupwizard,whichmenuisusedtoconfigurethehostnameoftherouter?

A

A.SetUp

B.Interfaces

C.Users

D.Routing

25.WhichMLPPPconfigurationstatementdeterminesthethresholdformaintainingthestateofanMLPPPbundle?

B

A.link-limit

B.link-threshold

C.minimum-threshold

D.minimum-links

JNCIA-ERPreassessmentExam.

1.Whichdirectoryisusedtostorethethreemostrecentconfigurationrollbackfiles?

（A）

A./config

B./var/tmp

C./var/home

D./config/rollback

2.WhatwillloadafactorydefaultconfigurationontoyourrouterifyoudonothaveaccesstotherouterCLI?

（D）

A.Pressthepowerbuttonforlessthan5seconds.

B.Pressthepowerbuttonformorethan5seconds.

C.Presstheconfigurationbuttonforlessthan5seconds.

D.Presstheconfigurationbuttonformorethan5seconds.

3.WhichthreedaemonsarecontainedintheJUNOSsoftware?

（Choosethree.）（BCD）

A.VPN

B.Chassis

C.Management

D.RoutingProtocol

4.WhichCLIcommanddisplaysthetimetherouterlastbooted?

（D）

A.showtime

B.showclock

C.showsystemboot

D.showsystemuptime

5.WhichrepresentsavalidmethodforobtaininganIPaddressduringanautoinstallationprocess?

（D）

A.RIP

B.BGP

C.OSPF

D.DHCP

6.WhichCLIcommanddisplaysthehardwarecurrentlyinstalledintherouter?

（C）

A.showchassisalarms

B.showsystemhardware

C.showchassishardware

D.showsystemenvironment

7.WhichtwostatementsregardingtheJUNOSsoftwareuserauthenticationmethodsarecorrect?

（Choosetwo.）（AB）

A.Allusersmustbeconfiguredlocallyontherouter.

B.Multipleauthenticationmethodscanbeconfigured.

C.Onlyoneauthenticationmethodcanbeconfigured.

D.Multipleuserscanauthenticateusingacommonlocaluseraccount.

8.WhichCLIcommanddisplaysanyactivealarmsontherouter?

（B）

A.showsystemalarms

B.showchassisalarms

C.showsystemenvironment

D.showchassisenvironment

9.WhichmajorJ-WebmenushouldyouusetosendanICMPechorequestpackettoaneighboringrouter?

（C）

A.Monitor

B.Manage

C.Diagnose

D.Configuration

10.WhatisonewaytoactivatetherescueconfigurationonaJ-seriesrouter?

（C）

A.Issuetheloadrescuecommand.

B.Issuethecommitrescuecommand.

C.Issuetherollback1commandandcommit.

D.Issuetherollbackrescuecommandandcommit.

11.Whywouldyouapplyanimportpolicytoaprotocol?

（D）

A.torestricttrafficthatentersyourrouter

B.toredistributeroutesbetweenprotocols

C.tomodifyroutepropertiesofroutesyousendtootherrouters

D.tomodifyroutepropertiesofroutesreceivedfromotherrouters

12.WhichCLIcommanddisplaysthecurrentRIPconfigurationonaJ-seriesrouter?

（D）

A.showprotocolsrip

B.showconfigurationrip

C.showripconfiguration

D.showconfigurationprotocolsrip

13.Toobservetraceoutputontheterminalscreeninrealtime,whatcommandmustbeexecuted?

（D）

A.debug

B.monitorstart

C.terminalmonitor

D.Tracefile

14.WheredoyouconfigureaRIPneighborintheCLI?

（D）

A.under[routingripneighbor]

B.under[protocolsripneighbor]

C.under[routingripgroup"group-name"neighbor]

D.under[protocolsripgroup"group-name"neighbor]

15.WhichJ-Webwindowpaneallowsyoutoviewandmanagelicenses?

（B）

A.Monitor

B.Manage

C.Diagnose

D.Configuration

16.WhichtypeofroutingprotocolisRIP?

（D）

A.linkstate

B.pathvector

C.policybased

D.distancevector

17.WhenusingtheJ-WebinterfacetoconfigureRIP,whichtwopoliciesareautomaticallyconfiguredbytherouter?

（Choosetwo.）（CD）

A.ImportpolicytoblockRIProutes.

B.Importpolicytoblockdirectroutes.

C.ExportpolicytoadvertiseRIProutes.

D.Exportpolicytoadvertisedirectroutes.

18.WheredoyouconfigurestaticroutesintheJunosCLI?

（D）

A.under[staticroute]

B.under[protocolsstatic]

C.under[policy-optionsstatic]

D.under[routing-optionsstatic]

19.WhichCLIcommanddisplaysroutesreceivedfromaRIPneighbor?

（D）

A.showriproute"neighbor"

B.showripreceive-route"neighbor"

C.showrouteprotocolrip"neighbor"

D.show