网优试题2（英语选择153）

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1、1.Whichcellplanisdesignedfirstandisthebasisforfutureplanning?EA.FinalB.PreliminaryC.BaseCoverageD.InitialE.Nominal2.Whatisthenameofthetypeoffadingwhichisduetoshadowing?DA.AtmosphericfadingB.Multi-pathfadingC.RayleighfadingD.LogNormalfadingE.Pathloss3.Whichunitisusedformeasuringtraffic?AA.Erla

2、ngB.Bit/secondC.HertzD.Subscribers/kHzE.Subscribers/minute4.Whattypeofinterferenceisproducedbyothertransmittersonthesamefrequency?BA.DoubleinterferenceB.Co-channelinterferenceC.AdjacentchannelinterferenceD.ReflectedinterferenceE.Timinginterference5.WhatdoesGradeofService(GoS)mean?DA.Numberofa

3、vailablesubscriberservicesB.Numberofsuccessfulcallset-ups34C.ChannelutilizationD.Numberofunsuccessfulcallset-upsduetocongestionE.Numberofdroppedcalls6.Whichcellpatternisrecommendedforusewithfrequencyhopping?BA.4/12B.3/9C.7/21D.7/7E.Noneofthese7.Whichofthefollowingisnotnecessarytoconsiderwhens

4、urveyingapotentialsite?AA.FrequencyallocationB.SpaceforantennasC.ElectricalpoweravailabilityD.ContractwithownerE.AvailabilityoftransmissiontotheBSC8.Whatisusedtoprevent“theping-pongeffect”,thatis,rapid,consecutivehandovers?CA.DynamicpowercontrolB.FrequencyhoppingC.HysteresisD.CellloadsharingE

5、.Discontinuoustransmission9.Whichofthefollowingwillnotincreasesystemcapacity?BA.Increasingthenumberofavailablefrequencies.B.Changingthemodulationscheme.C.ImplementinghalfratevocodersD.Goingfroma4/12toa3/9reusepattern.34E.Splittingcells.10.Whichofthefollowingisusedforplanningnetworkdimensionin

6、g,frequencyplanning,andmakingcoverageandinterferencepredictions?BA.ChannelEventRecording(CER)B.TEMScellplannerC.TEstMobileSystem(TEMS)D.CellularNetworkAdministrationE.CellularNetworkAnalyzer(CeNA)11.Whichcellplanisdesignedfirst,andisthebasisforfutureplanning?DA)BaseCoverageB)FinalC)Preliminar

7、yD)NominalE)Ultimate12.WhatisthedifferencebetweenGSMandCME20/CMS40?EA)CME20/CMS40areGSM-systemswithEricsson’smobilestations.B)CME20/CMS40areGSMsystemswith,atleast,halfoftheequipmentcomingfromEricsson.C)CME20/CMS40arenewrevisionsofGSM.D)GSMist