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

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. 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. 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. 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