基站测试题优化室.docx
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基站测试题优化室.docx
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基站测试题优化室
一、选择题
1.Flexiblealarmclassificationallows:
A)ChangingspecificCPandSPalarmslogans.
B)ChangingBTSspecificalarmclassesonspecificalarmslogansandonindividualBTSfaults.
C)Changingalarmsperdaycategory.Thismeans,forexample,thatA3alarmsareonlydisplayedduringtheday.
2.IsitpossibletoupdatetheBTSwithR8SoftwarebeforeupdatingtheBSCwithR8?
A)Yes,thefeaturebackwardscompatibilityprovidesthispossibility.
B)No
C)No,becausethisisanR8feature.Itwillbepossibleatthenextfunctionchange.
3.ASoftwareDownloadtotheBTSisinitiatedbythecommandRXPLI.Doestheabortofthefiletransferinterruptthetraffic?
A)Yes
B)No,butthefeaturehandover,duetoforcedblocking,mustbe
activated.
C)No
4.Frequencyreconfigurationcanbeperformedintwoways.Thequickandtheslowway.Whatisthedifference?
A)Experiencedtechniciansarequickeratcommandhandlingandcan
sendmorecommands.
B)FortheslowmethodtheBPCisreleased.Thisrequiresmoretimeasopposedtoreleasingonlythelogicalchannel.
C)AcommandmustbeusedtosetthespeedontheRP-Bustoachieveaquickerfrequencychange.
5.IsitpossibletochangetheBCCHfrequencywithouthaltingtheCell?
A)No,onlypossiblefortheTCH
B)Yes,butaBTStechnicianmustbeonsitetoassistwiththeOMT.
C)Yes
6.WhatisdifferentwhenusingasatelliteconnectionontheAbisinterfaceinsteadofonanormaltransmissionnetwork?
A)AroundtripdelayforallsignalssentonAbisfrom250mSmustbe
consideredandmustbesetbycommand.
B)TheImmediateassignmentmessageissentafterChannelActivationAcknowledgefromtheBTS.
C)TheAVIDImmediateassignmentmessageissentpriortoChannel
ActivationAcknowledgefromtheBTS.
7.Howistheairinterfacemodifiedtosupport14.4Kbit/s?
A)Noerrorcorrectionisused.
B)Insteadofremoving32bitsfromtheredundantbitsinthechannel
coding,132bitsareremoved.
C)ThebandwidthontheAirinterfacehasbeenincreasedfrom270
Kbit/sto405Kbit/s.
8.DoesRBS200support14.4Kbit/s?
A)No
B)Yes,buttheexternalsynchronizationbusmustbeused.
C)Yes,butonlyTRXsequippedwithSPU+withSPEandSPU++.
9.WhataretheinputparametersforthesubjectivespeechqualitysupervisionfromtheBTS?
A)MRR,FAS,andRNO
B)Rxqual,BER,andFER
C)ESL,SFL,andSES
10.Whyisitnotpossibletoexactlylocateamobilesubscriber?
A)ThevaluesthatcanberequestedtodayfromtheMSCareCGIand
TA.ThisgivesacirclearoundtheRBSwithawidthof500m.
B)ThisisnotallowedbytheGSMRecommendation.
C)ThereisnotenoughperformancefortheCPtohandlethishuge
amountofdata.ThisalsogeneratesahighloadontheIOGfor
transmittingthedatatotheMPC.
11.IsitpossibletohaveRBS200andRBS2000inthesameCell?
A)Yes,buttheRBS200mustbeconfiguredasslave,andRBS2000asmaster.
B)Yes,buttheRBS200mustbeconfiguredasmaster,andRBS2000asslave.
C)No
12.TheGSMRecommendationdoesnotallowatimedifference,higherthan920nS,betweenthechannelsbelongingtothesamecell.Howisthedelaycalculated?
A)Byusingtheformula:
ESBCablelength/300.000Km/s.
B)MeasurementsmustbetakenontheairinterfaceusingProtocol
AnalyzerandtheyshouldbedefinedbytheBSCcommand.
C)TheOMThasatooltocalculatethedelay.
13.WhichNetworkNodeisnotpartofanEricssonGSMSystem
A)AUC
B)MSC/VLR
C)MGW
D)HLR
14.WhichisthenumberusedinaGSMSystemtouniquelyidentifyamobilesubscriptionintheE164numberingplan.
A)IMSI
B)MSISDN
C)MSRN
D)TMSI
15.AnMSisfirstpagedonanincomingcallacrosswhichareaoftheGSMnetwork.
A)ALocationArea
B)ACell
C)AnMSC/VLRServiceArea
D)APLMN
16.WhichlogicalchannelintheGSMRadionetworktransmitstheBSICofthecell
A)BCCH
B)SCH
C)PCH
D)RACH
17.WhenanMSispoweredon,whathappensfirst?
A)TheMSscansalltheradiofrequenciesoftheGSMnetwork
B)TheMSscansfrequenciescarryingBCCHchannelsonly
C)TheMSscansthefrequenciescarryingBCCHfrequenciesof
neighboringcellsonly
D)TheMSsendsanAttachMessagetotheMSC
18.SDCCH/4isoneofthetwotypesofChannelCombinationusedtoallocatelogicalchannelstotheBasicPhysicalChannelsinGSM.Thisrefersto:
A)ThenumberofBCHsandCCHsallocatedinacell.
B)ThenumberofBCHsandCCHsallocatedontheBPCofone
frequencyinacell.
C)ThenumberofBCHs,CCHsandSDCCHsallocatedontheBPCs
ofonefrequencyinacell
D)ThenumberofBCHs,CCHsandSDCCHsallocatedontheBPCs
ofTS0andTS1ofoneparticularfrequencyinacell.
19.WhichofthefollowinginformationissenttotheBSCfromtheMSintheMeasurementReport?
A)Averagereceivedsignalstrengthoftheservingcell
B)Averagereceivedsignalqualityontheservingcell
C)BSICofthemeasuredNeighboringcells
D)A,BandC
20.HowoftenisacompletemeasurementreporttransmittedtotheBSC?
A)Every60sec
B)Every128ms
C)Every480ms
D)Every1sec
21.TheSS7SignalingSystemismadeupofaMessageTransferPart(MTP)andanumberofUser/ApplicationParts.WhatUserorApplicationpartisusedforsignalingbetweenBSCandMSCintheGSMnetwork?
A)BSSMAP
B)MAP
C)OMAP
D)INAP
22.Thedevicetypeforthe64kbpsTimeSlotsontheAbisinterfaceis:
A)RALT
B)MALT
C)RBLT
D)ETC
23.WhichunitintheBSCisusedforthetranscodingofspeechinformation?
A)TRAU
B)TRA
C)TRX
D)TRI
24.WhatdoesthetermManagedObject(MO)refertoinBSCExchangedata?
A)AlogicalrepresentationofthesoftwareintheBTS
B)AlogicalrepresentationofthehardwareunitsintheBTS
C)Alogicalrepresentationofthehardwareandsoftwareunitsinthe
BTS
D)TheHardwareandsoftwareofanRBS2000
25.WhichunitintheBSCperformsLAPDconcentrationandmultiplexing?
A)GS
B)TRAU
C)SRS
D)TRH
26.TheLocatingProcesscarriedoutintheBSCanalysesinformationsentfromtheMSandtheBTStodetermine:
A)ThecellprovidingthebestsignalstrengthtotheMS
B)AlistofthecellsprovidingthebestsignalstrengthtotheMS
C)Alistofthecellswhicharesuitableforhandoverinorderof
suitabilityfrombesttoworst
D)AlistofMSsconnectedinacell.
27.WhichofthefollowingfunctionsisNOTafeaturedesignedtoreduceinterferenceinacell?
A)Handover
B)DynamicBTSPowerControl
C)FrequencyHopping
D)DynamicMSPowerRegulation
28.MobileTrafficrecording(MTR)recordsdataintheBSCcollectedontheradiointerface.WhichofthefollowingstatementsaboutMTRisCORRECT?
A)DatacollectedisoutputasafileinputtoHardDiskoras
AlphanumericOutputifrequired.
B)TrafficeventsandMeasurementdataiscollectedforoneMS
C)MTRisinitiatedbycommandsenteredintheMSC
D)A,BandCarecorrect
29.ActiveBAListrecordingallowsanoperatortocollectinformationfromtheMeasurementresultsintheBSCforwhichgroupoffrequencies?
A)FrequenciesintheidleBAlistforacell
B)FrequenciesintheactiveBAlistforacell
C)FrequenciesintheidleandactiveBAlistsforacell
D)Allfrequenciesallocatedinacell
30.SeizuresupervisionofdevicesintheBSCmonitorsRALTdevicestorecord:
A)Neverseizeddevices
B)Continuouslyseizeddevices
C)BothA&B
D)Devicesthatdropoutimmediatelyafterbeingseized
31.TheAlarmintheBSCalarmlistwhichindicatesthereisafaultintheSubrateSwitchis:
A)SRSFault
B)EquipmentAlarmSRS
C)GroupSwitchFault
D)SNTFault
32.InformationcontainedintheRadioX-CeiverAdministrationErrorLogDataTable,whichisprintedoutbycommandRXELPisusedtosee:
A)CurrentfaultinformationaboutManagedObjectsonly
B)HistoricalfaultinformationaboutManagedObjects
C)AlarmsfromManagedObjectsthathasbeencleared
D)HistoricaldataaboutSoftwarerevisionsofManagedObjects
33.Wherearethemeasurementreportswhichdeterminehandoverofacallcarriedout?
A)BSC&MSC
B)MS&BTS
C)MS&MSC
D)MSC&BSC
34.Whichofthefollowingtypesofsignalswouldcarrytheinformation“LocationUpdatingrequest”?
A)InitialMSMessage
B)BSSMAP
C)DTAP
D)ISUP
35.WhereisthepagingofanMSinitiatedforanincomingcall?
A)BSC
B)BTS
C)MSC
D)HLR
36.FaultsoccurringattheBTSwhichpermanentlyeffectthenormaloperationoftheequipmentwillberecordedintwodifferenteventregistersintheBSC.Whatarethesetworegisterscalled:
A)ManagedObjectFaultInformationLog(faultyunitlist)andthe
ErrorLog
B)EventLogandErrorrecord
C)ExchangeLogandAlarmLog
D)CommandLogandTransactionLog
37.WhentheBSCverifiesthedatastoredintheBTSandfindsadiscrepancy,whatactionistaken?
A)TheMOisauto-blocked
B)TheBTSwillbetakenoutofserviceandanAlarminitiated
C)AnAlarmisinitiated
D)TheMOwillbeloadedandtestedandtheBTSparameters
updated
38.WhatMOscanbetestedwithcommandorderedequipmenttests?
A)TG,TRXC,TX,RX&TS
B)CF,IS,TF,TRXC,TX,RX&TS
C)TG,CF,IS,TF,TRXC,RX,TX&TS
D)TG,TS,RX&TX
39.TheinterfacebetweentheMSCandtheBSCisknownas:
A)B-Interface
B)A-BisInterface
C)A-Interface
D)A-TerInterface
40.Whichofthefollowingeffectsthesizeofacell?
A)ThetypeofBSCthatitisconnectedto
B)TimingAdvanceLimit(TALIM)valuesetforthecell
C)Numberofcellsinthecluster
D)NumberofTRXsconnectedinthecell
41.EnhancedObservedTimeDifferencepositioninginGSMuseswhichmethodtorelaythepositionofamobilephone?
A)GPSlocationinformation
B)TheTimingAdvancevalueandCGIofthecurrentcell
C)Thetimedifferencebetweenreceptionof
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