爱立信华中区技术支持考题答案.docx
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爱立信华中区技术支持考题答案.docx
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爱立信华中区技术支持考题答案
练习题(II)
1选择题
1.TowhichgroupdoesSignalingSystemNo.7belong?
a.ChannelAssociatedSignaling
b.CommonChannelSignaling
c.SubscriberLoopSignaling
2.WhatisthenameofthecommonpartofSignalingSystemNo.7,usedbyallUserParts?
a.MessageTransferPart
b.MobileApplicationPart
c.CommonChannelSignalingSubsystem
3.WhichlayerintheOSIreferencemodelisresponsibleforerror-freepoint-to-pointcommunication?
a.physicallayer
b.datalinklayer
c.transportlayer
4.WhichprotocolinaGSMnetworkisresponsibleforthecommunicationbetweentheCAMELnodes?
a.CAP
b.INAP
c.MAP
5.WhichofthefollowingisnottheresponsibilityofanyoftheMessageTransferPartlevels?
a.supervisionofthesignalinglink
b.distributionandroutingofsignalunits
c.allocationofacircuitforacall
6.Whichofthefollowingisnotacorrectsignalingpointcode?
a.0-2-006-1
b.2-1283
c.4-5341
7.InwhichpartofthesignalunitareISUPmessagessent?
a.MSU
b.LSSU
c.FISU
8.WhichfieldintheMTProutinglabelcontainstheaddressofasignalingpointwhichproducedthe
signalunit?
a.SLS
b.SIO
c.OPC
9.Routingofsignalunitstoaspecificdestination:
a.isalwaysdoneoverthesamelinksetandsignalinglink
b.isalwaysdoneoverthesamelinkset,but,possibly,overdifferentsignalinglinks
c.maybedoneoverdifferentlinksetsandsignalinglinks
10.Whatisthemaximumnumberofsignalinglinksinonelinkset?
a.4
b.8
c.16
11.RoutingofsignalunitstoaspecificdestinationwiththesameSLSvalue:
a.isalwaysdoneoverthesamelinksetandsignalinglink
b.isalwaysdoneoverthesamelinkset,but,possibly,overdifferentsignalinglinks
c.maybedoneoverdifferentlinksetsandsignalinglinks
12.WhichoftheISUPmessagesacknowledgesthereceptionofalladdressinginformation,requiredfor
routingacall?
a.IAM
b.ACM
c.ANM
13.WhichoftheISUPmessagesinitiatestheseizureofanoutgoingcircuitandtransmitsthe
information,requiredforcallsetup?
a.IAM
b.ACM
c.ANM
14.WhichofthefollowingisneverapartoftheSCCPaddress?
a.GlobalTitle
b.DestinationPointCode
c.OriginatingTransactionIdentifier
15.WhichofthefollowingisusedtorouteDT1messagesintheSCCPconnection-orientedmode?
a.LocalReferenceNumber
b.MobileGlobalTitle
c.OriginatingTransactionIdentifier
16.WhenauthenticationdataissentfromtheHLRtotheVLRintheGSMnetwork,whattypeofSCCP
frameisused?
a.DT1
b.UDT
c.CR
17.WhentheGMSCinterrogatestheHLRduringmobileterminatingcallsetup,whatistheSCCP
addressusedtoroutea“SendRoutingInformation”requesttotheHLR?
a.HLRaddressasdefinedintheGMSC
b.MSISDN
c.MGT
18.WhentheHLRsendsa“SendRoutingInformation”responsebacktotheGMSC,whichistheSCCP
addressusedforrouting?
a.theGMSCaddressasdefinedintheHLR
b.MSISDN
c.theGMSCaddressreceivedas“callingaddress”inarequest
19.WhichpartoftheTCAPmessagecontainstransactionidentifiers?
a.TransactionPart
b.DialoguePortion
c.ComponentPortion
20.WhichpartoftheTCAPmessagecontainsapplicationcontextanduserinformation?
a.TransactionPart
b.DialoguePortion
c.ComponentPortion
21.WhichpartoftheTCAPmessagecontainsMAPoperationparameters(forexample,authentication
datasentfromtheHLRtotheVLR)?
a.TransactionPart
b.DialoguePortion
c.ComponentPortion
22.InwhatsituationistheMAPoperation“ProvideRoamingNumber”used?
a.theHLRaskstheMSC/VLRfortheMSRN
b.theGMSCaskstheHLRfortheMSRN
c.neither(a)nor(b)
23.DuringlocationupdatingofanewsubscriberintheMSC/VLR,whichinformationisnotsentfromthe
HLR?
a.theHLRaddress
b.theMSISDN
c.theAUCaddress
24.WhatisthenameofafunctionalentitythatcontainstheCAMELservicelogictoimplementthe
operatorspecificservices?
a.gsmSCF
b.gsmSRF
c.gsmSSF
25.WhatisusedtoinformthegsmSCFabouttheservicelogicitshouldapplyforacall?
a.MSISDN
b.IMSI
c.ServiceKey
26.Whatisthenameoftheoperation,generatedbygsmSSFwhenatriggerisdetectedintheBasic
CallStateModel,torequestinstructionsfromthegsmSCF
a.InitialDP
b.Connect
c.SendChargingInformation
27.WhatprotocolisusedontheA-bisinterfacetoensureerror-freetransmissionofsignalingmessages
betweentheBSCandBTS?
a.LAPDm
b.MTP
c.LAPD
28.WhatprotocolontheairinterfaceinGSMimplementstheOSIlayer3(networklayer)functions?
a.MM
b.LAPDm
c.none
29.WhatisthenameoftheprotocolusedbytheSGSNtocommunicatewiththeHLRintheGSM
network?
a.MAP
b.UDP
c.LLC
30.WhatisthenameoftheprotocolusedbytheSGSNtocommunicatewiththeBSCintheGSM
network?
a.MAP
b.GTP
c.BSSAP+
31.Whichofthefollowingisacorrectlistofthegroupsoffunctionblocksfor
theHRS?
a)Administration,Data,SS7,andINAP
b)Analysis,GSM,Database,andINAP
c)Administration,Analysis,Databases,MAP,INAP,andControl
d)Noneoftheabove
32.WhichisalistoftheBasicServiceGroups?
a)MSISDN,IMSI,GSM,MSC/VLR
b)Speech,SMS,Facsimile,AllDataCircuitsAsynchronousand
SynchronousandAuxiliarySpeech
c)Speech,Facsimile,Data,Transmission,DualNumbering
d)Noneoftheabove
33.WhichisalistofthetypesofCallForwardingwhichareinitiatedbythe
MSC/VLR?
a)None
b)Callforwardingunconditional
c)Onbusy,onnoreply,onMSnotreachable
d)Onbusy,onnoreply,onMSnotreachableandcallforwarding
unconditional
34.Whichisthebestdefinitionofunconditionalcallforwarding?
a)TheMScanforwardallincomingcallstoaspecificnumber.
b)TheMScanforwardallincomingcallstoanothernumber.
c)TheMScanforwardacall,ifrequested.
d)Alloftheabove.
35.USSDstandsfor:
a)UnstructuredSupplementaryServiceData
b)UnrestrictedSupplementaryService-Digital
c)UserSpecialServiceData
Usingthesampleprofilebellow,answerthefollowingquestions(36-40).
HLRSUBSCRIBERDATA
SUBSCRIBERIDENTITY
MSISDNIMSISTATEAUTHD
49172401000262024000000000CONNECTEDNOIMSIINAUC
PERMANENTSUBSCRIBERDATA
SUD
CAT-10DBSG-1TS62-1TS21-1
CFU-1CFNRY-1MPTY-1OIN-1
OFA-0PWD-000SOCFU-1SOCFRY-0
AMISISDNBSBC
NONE
SUPPLEMENTARYSERVICEDATA
BSG
TS60
SSSTATUSFNUMTIME
SADD
CFNRYNOTACTIVE
CFUNOTACTIVE
LOCATIONDATA
VLRADDRESSMSRNMSCNUMBERLMSID
UNKNOWN
END
36.Thesubscriber’scallsareforwardedunconditionally.
a)True
b)False
37.Thesubscribercaninitiateconferencecalls.
a)True
b)False
38.Theoriginofforwarded-tonumbersis:
a)MIS1fromrouteGRI
b)OBAfromthecommandMGISI
c)BOfromthecommandMGISI
d)0
39.Thesubscribercaninitiatecallstotheintelligentnetwork.
a)True
b)False
40.ThesubscriberisregisteredinaspecificVLR.
a)True
b)False
41.TheIMSIseriesforredundantsubscribersdonothavetocorrespondto
theprimarysubscribersinthematedHLR.
a)False
b)True
42.CompletesubscribertemporarydataisupdatedbetweenmatedHLRs
a)True
b)False
43.Whichofthefollowingprovideroutingfunctionsforincomingcallstoa
GSMnetwork?
a)EIR
b)AUC
c)GMSC
44.The_______temporarilystoresinformationabouttheMScurrently
visitingitsServiceArea.
a)VLR
b)HLR
c)EIR
45.Whichofthefollowingnumbersisthedirectorynumberofasubscriberin
aGSMnetwork?
a)IMSI
b)MSISDN
c)MSRN
46.Thefollowing:
Normal,IMSIDetach,IMSIAttach,PeriodicRegistration
areallformsof_______________________.
a)LocationUpdating
b)Authentication
c)Paging
47.TheMSispagedonanincomingcallinallcellswithina_______.
a)PLMN
b)MSC/VLRServiceArea
c)LocationArea
48.HowmanycharacterscanbetransferredwiththeShortMessage
Service?
a)60
b)400
c)160
49.HowmanybasicservicegroupsarethereinGSM?
a)6
b)12
c)9
50.DuringthehandlingofanincomingcallintheGMSCanMSRNis
receivedviatheHLR.RoamingReroutingisstartedintheGMSC.Anew
B-noanalysisisinitiatedusingtheBO(B-Origin)fromthe_____route.
a)MSC/VLRRoute
b)GRIRoute
c)PSTNRoute
51.Thecallset-upmessagefromthePSTNreceivedintheGMSCcontains
whichofthefollowingcomponents?
a)RoutingCase
b)IMSI
c)B-NumberType
52.WhichofthefollowingnetworkelementswouldcontainEchoCancellers?
a)GMSC
b)BSC
c)BTS
53.WhichofthefollowingprotocolsareusedforsignalingovertheAinterface?
a)BSSMAP
b)MAP
c)LAPD
54.ThetimeslotsontheMSCinterfacewiththeBSCaredefinedas______
devices.
a)BT
b)MALT
c)RALT
55.WhathappensintheSMS-GMSConreceiptofanerrormessagefrom
theMSC/VLR,indicatingthatthereisnopagingresponsefromtheMSor
thattheMSisdetached?
a)Themessage“SETMESSAGEWAITINGDATA”issenttotheHLR
b)Themessage“ALERTSERVICECENTER”issenttotheSMSIWMSC
c)Themessage“FORWARDSHORTMESSAGE”issentagaintothe
MSC/VLRwheretheMSiscurrentlylocated
56.HowoftendoestheMSsenditsmeasurementreport(usedasinputto
thelocatingalgorithm)totheBTS?
a)Every10seconds
b)Everyhalf-second
c)Everyminute
57.Whatisthenameofthefeaturethatenablesimmediatedisconnectionof
a(fraudulent)callwithcommandCWSNI?
a)MSPurge
b)ForloppRelease
c)CallTearDown
58.WhatcommandisusedtospecifyMTProuting(includingpriorityonlink
sets)?
a)C7RSI
b)C7STI
c)C7ROI
59.TheIMSIDetachandIMSIAttachinformationisstoredinwhatnetwork
element?
a)BSC
b)HLR
c)MSC/VLR
60.WhichnumberisthebasisfortheMobileGlobalTitle(MGT)
a)MSRN
b)IMSI
c)DestinationPointCode(DPC)
61.ThecommandtodefineaTelecom
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