4/20/2015 CDMAinterviewquestionsandanswers,CDMAinterviewFAQ

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CDMAinterviewquestionsandanswers

Wirelesscommunicationinterview

WhatisCDMA2000?

CDMA2000isaMulticarriercodedivisionmultipleaccessversionofIMT2000standard,CDMA2000isa3Gwirelesstechnology................ReadAnswer

ExplainEDGE.

EDGEisanacronymforEnhancedDataGSMEnvironment,AnimprovedwirelesstechnologyoverGSM,A2ndgenerationcellphonetechnology.............ReadAnswer

ExplainDECT.

DECTisoneofthewirelesstechnologies,originatedinEurope,DECTwasdesignedtointerworkwithvariousnetworkssuchasPSTN,ISDN,GSMetc.............ReadAnswer

ExplainHighSpeedPacketAccess.

HSPAisacombinationof2mobiletelephonyprotocolsHighSpeedDownlinkPacketAccessandHighSpeedUplinkPacketAccess,HSPAimprovestheperformanceofexistingWCDMAprotocols..............ReadAnswer

ExplainEVDO/EVDO.

EVDOstandsforEvolutionDataOptimized,EVDOisa3GbroadbandtechnologyusedbyVerizon,Spring,Alltel..............ReadAnswer

WhatisthedifferencebetweenCDMAandGSM?

Theimportantdifferencesare:DataTransferSpeed:CDMAisfasterthanGSM,CDMA2000downstreamrateis2megabits/second,throughEVDO,whereGSMdownstreamrateisupto384kilobits/second,throughEDGEtechnology.............ReadAnswer

WhatistheimportanceofCDMAintodayscellularworld?

Thetransitiontodigitalradiothroughtheprocessofdefiningstandardsisimplementingabout90%inthecellularindustry.SmoothtransitiontodigitalstandardsisinvolvedinCDMAtechnology............ReadAnswer

Differentiatebetween:a.)CDMAandFDMAb.)CDMAandTDMA

a.)CDMAandFDMASamefrequencyisusedbyeveryuserandsimultaneoustransmissionoccursEverynarrowbandsignalismultipliedbywidebandspreadingsignal,usuallyknownascodeword...............ReadAnswer

WhatisthedifferencebetweenCDMAandGPRS?Whichofthemisbetter?Why?

TheDifferences:CDMAisoneofthetypesofmobileconnectionsformakingcallswhereasGPRSisatechnologyforinternetconnectionsthroughamobilephone................ReadAnswer

ExplainfollowingforwardlinkchannelsinCDMAsystem:a.)PilotChannelb.)Sync.Channel

PilotChannelAforwardlinkchannelwhichisabasetomobilethatmodulatesonlybythepilotPN.Itspreadscommoncodestoallsignalstransmittedfromagivenbasestation..............ReadAnswer

ExplainthefollowingtwotypesofhandoffinCDMAsystem:a.)Softhandoffb.)Softerhandoff

InterviewquestionsBluetooth

3G

CDMA

GSM

GPRS

TestNetworkingskillsNew

TestSQLServerskillsNew

TestOracleskillsNew

Networkingnotes

Applicationlayer

Datalinklayer

IPlayer

Ethernet

Firewall

Networktechnology

Protocols

Routers

Security

TCPlayer

VPN

Tunneling

Subneting

RTP

Multicasting

SocketProgramming

SecuredSocketLayer

4/20/2015 CDMAinterviewquestionsandanswers,CDMAinterviewFAQ

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a.)SofthandoffSofthandoffisafeatureinwhichacellularphoneissimultaneouslyconnectedtotwoormorecellularphonesduringasinglecall............ReadAnswer

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