JNCIAER Preassessment exam文档格式.docx
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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?
A.Manage>
System
B.Diagnose>
Flash
C.Monitor>
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?
A.showchassisalarms
B.showsystemhardware
C.showchassishardware
D.showsystemenvironment
11.WhichstatementsaretrueregardingDHCPservicesandJ-seriesrouters?
BC
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?
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?
A.ALGsmonitorprotocolexchangesandperformaddressandporttranslationswithinthepayloadforcertainprotocols.
B.ALGsallowtheroutertointeractwithlayer4andabovewhenperformingtranslationservices.
C.ALGsarerequiredwheneverNATisused.
D.ALGsareonlyusedwhenPATisconfigured.
16.WhichtypeofIGPshouldyouusetoachievescalabilityinalargeenterprisenetwork?
A.distance-vectorprotocol
B.link-stateprotocol
C.Bellman-Fordprotocol
D.path-vectorprotocol
17.WhataretwoservicesprovidedbytheSDX?
AC
A.customizedfirewallmodifications
B.anXMLinterfaceforrouterconfiguration
C.usagetrackingandaccounting
D.secureremoteaccesstotherouter
18.WhichstatementsaretrueregardingtheASM?
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?
A.snoop
B.monitor
C.preempt
D.track
21.WhichJUNOSsoftwarefeatureformsthebasisforJUNOScope?
A.J-Web
B.JUNOScript
C.BSDKernel
D.SDX
22.Whichconfigurationoptionallowsyoutoviewautoinstallationmessages?
A.traceoptions
B.debug
C.view
D.decode
23.WhichofthefollowingaddressassignmentoptionsareavailablewhenconfiguringNAT?
AB
A.Static
B.Dynamic
C.One-to-one
D.One-to-many
24.WithintheJ-Webinitialsetupwizard,whichmenuisusedtoconfigurethehostnameoftherouter?
A.SetUp
B.Interfaces
C.Users
D.Routing
25.WhichMLPPPconfigurationstatementdeterminesthethresholdformaintainingthestateofanMLPPPbundle?
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?
A.showtime
B.showclock
C.showsystemboot
D.showsystemuptime
5.WhichrepresentsavalidmethodforobtaininganIPaddressduringanautoinstallationprocess?
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?
B.Manage
C.Diagnose
D.Configuration
10.WhatisonewaytoactivatetherescueconfigurationonaJ-seriesrouter?
A.Issuetheloadrescuecommand.
B.Issuethecommitrescuecommand.
C.Issuetherollback1commandandcommit.
D.Issuetherollbackrescuecommandandcommit.
11.Whywouldyouapplyanimportpolicytoaprotocol?
A.torestricttrafficthatentersyourrouter
B.toredistributeroutesbetweenprotocols
C.tomodifyroutepropertiesofroutesyousendtootherrouters
D.tomodifyroutepropertiesofroutesreceivedfromotherrouters
12.WhichCLIcommanddisplaysthecurrentRIPconfigurationonaJ-seriesrouter?
A.showprotocolsrip
B.showconfigurationrip
C.showripconfiguration
D.showconfigurationprotocolsrip
13.Toobservetraceoutputontheterminalscreeninrealtime,whatcommandmustbeexecuted?
A.debug
B.monitorstart
C.terminalmonitor
D.Tracefile
14.WheredoyouconfigureaRIPneighborintheCLI?
A.under[routingripneighbor]
B.under[protocolsripneighbor]
C.under[routingripgroup"
group-name"
neighbor]
D.under[protocolsripgroup"
15.WhichJ-Webwindowpaneallowsyoutoviewandmanagelicenses?
16.WhichtypeofroutingprotocolisRIP?
A.linkstate
B.pathvector
C.policybased
D.distancevector
17.WhenusingtheJ-WebinterfacetoconfigureRIP,whichtwopoliciesareautomaticallyconfiguredbytherouter?
(Choosetwo.)(CD)
A.ImportpolicytoblockRIProutes.
B.Importpolicytoblockdirectroutes.
C.ExportpolicytoadvertiseRIProutes.
D.Exportpolicytoadvertisedirectroutes.
18.WheredoyouconfigurestaticroutesintheJunosCLI?
A.under[staticroute]
B.under[protocolsstatic]
C.under[policy-optionsstatic]
D.under[routing-optionsstatic]
19.WhichCLIcommanddisplaysroutesreceivedfromaRIPneighbor?
A.showriproute"
neighbor"
B.showripreceive-route"
C.showrouteprotocolrip"
D.show