Telecom Management
SectionA:Objective Type (30Marks)
Part One:
Multiple Choices:
1. This bandtransmitsuplinkaroundthe 6GHz...
c. OFDM
d. ADPCM
8. It is a newconceptinmultimediamobile broadcastingservice,convergingbroadcastingand
telecommunications....
HTML. The initial versionoperatedatonly9.6 Kbps,slowerthanthe 56 Kbpsmodemsthatoften
seemveryslow fordownloadingInternetgr...
Instead,itisthe surroundingsoftware layerthatgivesprogramsthe impressionthattheyare
runningon 86x hardware.Thisinnovatives...
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Telecom management

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CASE STUDY ANSWERS
ASSIGNMENT SOLUTIONS
PROJECT REPORTS AND THESIS

ISBM / IIBMS / IIBM / ISMS / KSBM / NIPM
SMU / SYMBIOSIS / XAVIER / NIRM / PSBM / NSBM / ISM / IGNOU / IICT / ISBS / LPU / ISM&RC/ LPU / NMIMS / ISBS / MANIPAL

MBA - EMBA - BMS - GDM - MIS - MIB
DMS - DBM - PGDM - DBM – DBA - PGDBM

www.mbacasestudyanswers.com
www.casestudysolution.in
www.casestudies.co.in
aravind.banakar@gmail.com

ARAVIND
09901366442 - 09902787224

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Telecom management

  1. 1. Telecom Management SectionA:Objective Type (30Marks) Part One: Multiple Choices: 1. This bandtransmitsuplinkaroundthe 6GHz range & downlinkaroundthe 4GHzrange. a. C-Band b. Ku-Band c. Ka-Band d. L-Band 2. On these trunks,trafficflowsinboththe incoming&outgoingdirections. a. DOD trunks b. DID trunks c. Two-waylocal exchange trunks d. None of the above 3. As networksbecome more digitized,fewerconversionstake place,andvoice canbe carriedat a higherqualityoverfewerflowerbitspersecond. a. PCM b. ADPCM c. DCSs d. DLCs 4. _____________ isa standardforstorage & retrieval of movingpictures&audioonstorage media. a. MPEG-1 b. MPEG-2 c. MPEG-4 d. MPEG-7 5. It is an openstandardfor digital videotransmissionovercable thatwasdefinedbyETSI& ratifiedin1994. a. DVB-H b. DVB-T c. DVB-C d. DVB-S& DVB-S2 6. It is the oldestof DSL technologies&a symmetrical service,measuringthatitprovidesequal bandwidthinthe bothdirections. a. HDSL b. SDSL c. G. SHDSL d. ADSL 7. It is the newestspreadspectrumtechnique,anditsmainpurpose istoresolve the problems. a. CDMA b. TDMA
  2. 2. c. OFDM d. ADPCM 8. It is a newconceptinmultimediamobile broadcastingservice,convergingbroadcastingand telecommunications. a. DMB b. OFDM c. VF d. None of the above 9. It is a Niche broadbandwirelesstechnologythatatfirstappearsto complete formarketshare with mobile WiMax & Mobile-Fi. a. HiperAccess b. HiperMan c. iBursrt d. ETSI BRAN 10. In-FUSIO’s(www.Infusion.com) __________ is bestknownforitsbusinessmodel,which supportsa varietyof revenue models,includingpay-per-level andSMShighscores. a. JavaME b. BREW c. EXEn d. Mophun Part Two: 1. State the protocols& implementationswhichare associatedwithMeshNetwork. 2. Write a shortnote on HFC Architecture anddraw the topologyof anHFC network. 3. What is the IP multimediasystem? 4. What is SymmetricEncryptions? 5. Brieflyexplainthe majorlayersof IPTnetworktaxonomy. END OF SECTION A Caselet1 “DoCoMo (meaning‘anywhere’inJapanese) isaNTT subsidiaryandJapan’sbiggestmobile service provider,withover31 millionsubscriberasof June 2000. In February1999, NTT DoCoMo launched itsi-mode service.Withinone year,ithadoverfourmillionsubscribers,andwithinanothersix monthsitwentup to eightmillionandhadovertakenotherJapanese Internetserviceproviders (ISPs) thatprovide service tothe desktop.DoCoMo’si-mode isthe onlynetworkinthe worldthat nowallowssubscribers continuousaccesstothe Internetviamobile telephone.The service letsuses sendand receive e-mail, exchangephotographs,doonlineshoppingandbanking,obtainfinancial information,download personalizedringingmelodiesfor theirphones,andnavigate amongmore than 7,000 speciallyformatted Websites.”Additional contentsuchnewsandgamesisofferedona subscriptionbasisinthe range of $ 1to $ 3 per month. Since i-mode service isusedthroughcell phoneswithtinyscreens,the typesof interactionandgraphical displaysexpectedbyWorldWide Webusersare not possible.I-modewasbuiltusingIPanda subsetof
  3. 3. HTML. The initial versionoperatedatonly9.6 Kbps,slowerthanthe 56 Kbpsmodemsthatoften seemveryslow fordownloadingInternetgraphics.The 9.6 Kbpsdata rate was initiallyadequate, however, because mostof the datawastext. I-mode’spricingmodel istotallydifferentfromthe fixe4d-rate U.S.model oratime-meteredEuropean model.I-modechargesare basedonthe number of packetsof data sentpermonth.The more requestsfor Webpagesor e-mail thata usersends,the higherthe total charge.I-mode userspaya $3 flatmonthlyfee forunlimitedaccesstomobile data services.Additional chargesare appliedonaperpacketbasis. Anothersource of revenue for DoCoMo a 9% grosscommission.Althoughpay-per-use contentaccounts foronly20% of all i-mode content,70% of i-mode userssubscribetothese services,generatingan additional $1percustomer permonth inbillingandcollectioncommissionsforDoCoMo I-mode issopopularinJapan thatthe primarymethodof InternetaccessinJapancouldsoon be through mobile phonesandother portable devices.DoCoMoannouncedthatInternetaccesswouldbe anoption oneveryphone it sells. NTTDoCoMo haslookedatways to penetrate the U.S.market.Some observersare skeptical aboutwhetheri-mode wouldsucceedelsewhere.Theynote thatJapanmay be a unique market, withunique characteristicsthat,maynotexistelsewhere,suchasa huge audience interestedIusing the Internet, culturallyspecificcontent,andahuge commutingpopulation.Accordingtoone analyst,successful mobileapplicationsare highlyspecifictoculturesandnational demographics. What fliesinJapanwon’t necessarilyflyinthe StatesorEurope. Questions: 1. How doesthiscase demonstrate the importanceof datatransmissionratesinbusiness?Doesit implythatpeople inJapanare willingtoacceptlowerdataratesthan people inthe U.S.? 2. Some people saythatthe Internetfostersglobalizationbyprovidingworldwideaccesstothe Web.Discussargumentsforand againstthisstatement. Caselet2 TransmetaCorporationwasfoundedin1995 to builda new type of computerchipdirectedat mobile applicationsthatrelyonbatterypowertorun laptopcomputersandotherportable devices. The company saidnothingaboutitsproductuntil an unveilingonJanuary19, 200. By October2000, NEC,Sony,and Fujitsuhadall launchednotebookcomputersbasedonitsCrusoe chip.Sonysaidit will use the processorinitsnewVaioPicture BookCIVN notebook,andTransmetaclaimedthat Crusoe shouldnearlydoublethe batterylifeof the new model.Transmeta’sCrusoe productis actuallya familyof processors. The TM3200 isdesignedtopro-vide afull adayof Webbrowsingon a single batterycharge formobile Internetdevicesweighingone totwopounds.The TM5400 and TM5600 are designedtosolve the problemsof poorbatterylife andsub-parperformance inthe ultra-lightmobile PCs.Per-formingat700 MHz, TM5400/5600-based laptopscan lastup to eight hourson batterypowerwhenrunningeveryday officeapplications,andthree tofourhoursrunning heavy-dutymultimediaapplicationslike DVD movies. Major challengesindesigningTransmeta’sCrusoe chipcenteredonreducingthe chip’spower consumptionwhilestillsupportingapplicationsthatranon Intel’s86xx line of processors.Transmeta appliedaunique designthatshiftedthe balance of workbetweenhardware andsoftware.According to Transmeta,“The hardware componentisa verysimple,high-performance,low-powerVLIW(very Long InstructionWord) engine withaninstructionsetthatbearsnoresemblance tothatof x86 processors.
  4. 4. Instead,itisthe surroundingsoftware layerthatgivesprogramsthe impressionthattheyare runningon 86x hardware.Thisinnovativesoftwarelayeriscalledthe Code Morphingsoftware because itdynamically‘morphs’x86instructionsintothe hardware engine’snative instructionset. Thisunique approachto executingx86code eliminatesmillionof transistors,replacingthemwith software.Asfirst, Transmetachipswere beingincorporatedintoportable productsthere wassome controversyaboutthe importance of the powersavingaffordedbythe Crusoe chip.Transmeta claimedthat“the chip consumes aroundone wattof powerwhenrunning,comparedwithanIntel Pentium’s15to 20 watts.This meansit usessignificantlylessbatterypower,andenableslight- weightnotebooksto workforupto eighthours.In standbymode,the chipconsumesaround20 milliwattsof power”.A Toshibaproductmanagerwasnot greatlyimpressed,sayingthatthe chip doesgive anincrease inbatterylife butthatthe back lighton a sub notebookcomputeralso consumesa lotof power.He thoughtthe batterylife advantage inthismarket wouldbe nomore than 30% to 40%. AfterIBMdecidednottogo aheadwiththe Crusoe for itsnew product,a spokes-womansaid,“The IBM480 notebookhasa batterylife of 4.5 hoursand itwas hopedthatCrusoe wouldextendthistoeighthours.However,Crusoe onlymanaged5.5hoursin IBM’s benchmarkingtest.”A GartnerGroup consultantsaid,”The mainissue isperformance.The chipuses emulationor‘code morphing’andthereforedoesnotgive the same performance asyou getwithIntel…..the reasonIBMmovedawayfromthe chipis that eitherthere wasnotenough poweror there was not enoughperformance.”There wasnoguarantee thatthe Crusoe chipor Transmetawouldsucceed, especiallysinceIntel andothercompanieswere developingchipsforthe same market. Questions: 1. Why mightportable computinganddesktopcomputingcall fordifferenttypesof microprocessors? 2. Reviewthe performance variables.Inwhichareasdidthe Transmetachiptry to excel 1. DNS isa distributeddatabasesystemthatoperatesonthe basisof a hierarchyof names.Explain the statement&also explainhowDNSserverswork. 2. Explainthe workingsof GSM, UWC, CdmaOne & PDC technologiesof digital cellular. END OF SECTION C

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