Testinside 642311V473认证考试题库考题分享.docx
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Testinside 642311V473认证考试题库考题分享.docx
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Testinside642311V473认证考试题库考题分享
Exam:
Cisco642-311
Title:
CiscoOpticalSONETExam(SONET)
Version:
V4.73
English:
www.TestI
GB:
www.T
TestInside,helpyoupassanyITexam!
1.YouareinstallingaCiscoONS15454inaserviceprovidersite.ADS3cableistobeconnectedtoadigitalcross-connectsystem.Whatisthemaximumdistanceallowedbetweenthetwo?
A.225ft
B.450ft
C.655ft
D.900ft
Answer:
B
2.ClicktheExhibitbutton.WithinanONS15454,youareprovisioningacircuitonanunprotectedUPSRring.Intheexhibit,whichtwomustyouconfigure?
(Choosetwo.)
A.revertive
B.circuittype
C.circuitsize
D.bidirectional
E.protecteddrops
F.switchonPDI-P
Answer:
BC
3.WithR4.0,howmanytotalDCCtunnelconnectionscaneachONS15454supportusingtheTCC+card?
A.10
B.32
C.64
D.84
E.96
Answer:
B
4.ClicktheExhibitbutton.Acustomerhasseveralinterconnectedcorerings(seeexhibit).Theywanttocreateseveralirtualrings?
utilizingtheirOC-192backbone(nodes1,2,3,4).Whatshouldyourecommend?
A.PPMNwithBLSRrings
B.PPMNwithUPSRrings
C.1:
Nprotectiononallcorecircuits
D.multi-ringinterconnectwithBLSRrings
Answer:
B
5.WhichthreetimingmodesaresupportedontheONS15454shelf?
(Choosethree.)
A.linetiming
B.looptiming
C.internaltiming
D.throughtiming
E.externaltiming
Answer:
ACE
6.ClicktheExhibitbutton.IntheDCNconnectionshownintheexhibit,allnon-GNEnodesarelocatedondifferentsubnetsfromtheGNE.TherearenostaticroutesorexternalOSPFonanyelements.CTCWorkstationandGNEhaveCiscoRouterastheirdefaultgateway.CantheCTCworkstationseetheentireSONETnetwork?
A.Yes,butonlyifOSPFisenabledaroundthering.
B.Yes,becausetheGNEwillonlyserveasaproxy-ARPforelementsonthesamesubnet.
C.Yes,butonlyiftherouter'saddressisenteredasastaticrouteinthenon-GNEelements.
D.Yes,becausetheGNEwillserveasaproxy-ARPforallelements,regardlessoftheirsubnets.
Answer:
A
7.WhatprotocolenablesEthernetoverSONET/SDHencapsulationinteroperabilitybetweentheG-seriesandML-seriesEthernetcards?
A.LEX
B.HDLC
C.GFP-F
D.PPP/BCP
Answer:
A
8.Whataretwocharacteristicsofdual-ringinterconnectinSONETnetworks?
(Choosetwo.)
A.Itprotectssignalsagainstnodefailuresbetweenrings.
B.Itprotectssignalsagainstnodefailurewithinasinglering.
C.Itallowsfortraffictobepreemptedwhenaringswitchoccurs.
D.Trafficcanbedroppedandcontinuedatinterconnectingnodes.
E.Itprotectspreemptibletrafficfrombeingdroppedwhenaringswitchoccurs.
Answer:
AD
9.WhyisanOC-32F-BLSRnotfeasible?
A.Switchtimeswouldexceed50msforanOC-3BLSRring.
B.Anequalamountofworkingandprotectbandwidthisrequired.
C.DCCbandwidthisnotlargeenoughtohandleK1/K2processing.
D.ThereisnotenoughbandwidthinanOC-3ringtojustifyBLSRprotection.
Answer:
B
10.WhatisthecorrectrelativeswitchingpriorityinaBLSRring(highertolower)?
A.signalfail,signaldegrade,manualswitch
B.signaldegrade,signalfail,manualswitch
C.protectionlockout,manualswitch,pathAIS
D.forcedswitch,manualswitch,signaldegrade
E.protectionlockout,manualswitch,forcedswitch
Answer:
A
11.YouareprovisioningaDS-1circuitonanONS15454UPSRconfigurationandXC-10Gcard.HowmanytotalVTportsareusedwithintheVTmatrixatthesourcenode?
A.0
B.1
C.2
D.3
E.4
Answer:
D
12.ClicktheExhibitbutton.Whichtypeofprotectionisshownintheexhibit?
A.1+0
B.1+1
C.1:
1
D.1:
N
Answer:
B
13.Acustomerwantstocreatea1:
1protectiongroupwithaDS3N-12card.Whichcardslotswouldallowfora1:
1protection?
A.Slot2andSlot4
B.Slot4andSlot6
C.Slots5or13only
D.Slot16andSlot17
Answer:
D
14.ClicktheExhibitbutton.Giventheinformationshownintheexhibit,whencreating2DS1circuits,howmanySTSportsareusedontheVT1.5matrixatNode1asVTcircuitsandhowmanyareusedafterusingVTtunnels?
A.2;0
B.3;2
C.3,5
D.4;0
E.6;0
F.6;2
Answer:
C
15.Acustomerhas2DS1stoaddbetweenadjacentnodesinaUPSRring.Whattypeofcircuitshouldyourecommend?
A.VTcircuits
B.STScircuits
C.VTtunnelcircuits
D.1:
1protectioncircuits
E.1:
Nprotectioncircuits
Answer:
A
16.YouareprovisioningaDS-1circuitonanONS154542F-BLSRwithaXC-10Gcard.EachVT1.5connectionmustalsoterminateviatheSTSmatrix.Ontheoriginatingcircuitnode,howmanySTSportsarenowavailableforVT1.5circuits?
A.2
B.3
C.4
D.20
E.22
F.24
Answer:
E
17.WhichtimingmodeismostappropriateforanONS15454thathaslostitsBITS-1andopticalreferences?
A.linetiming
B.looptiming
C.internaltiming
D.throughtiming
E.externaltiming
Answer:
C
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