1.ListtheproblemsyouexperiencedwhenyoucarriedoutarecentICT-relatedassignment.Trytoputtheseproblemsintosomeorderofmagnitude.Foreachproblemconsiderwhethertherewassomewayinwhichtheproblemcouldhavebeenreducedbybetterorganizationandplanningbyyourself.2.Weplantoinvest5000$foraprojectandwishtoget12500$profitafterfiveyears.Supposethatthereis2500$profitforeveryyearandtheinterestrateis12%.PleasecomputetheNPVandDPBPfortheproject.YearCash-flowDiscountfactorDiscountedcashflow0-5,0001.0000-5,00012,5000.89292,23222,5000.79721,99332,5000.71181,78042,5000.63551,58952,5000.56741,419NPV4013DPBP(动态回收期）=3years3.Aninvoicingsystemistohavethefollowingcomponents:amendinvoice,produceinvoice,producemonthlystatements,recordcashpayment,clearpaidinvoicesfromdatabase,createcustomerrecords,deletecustomer.(a)Whatphysicaldependenciesgoverntheorderinwhichthesetransactionsareimplemented?1.Createcustomer2.Deletecustomer3.Produceinvoice4.Amendinvoice5.Payment6.Clearpaidinvoices7.Producemonthlystatements(b)Howcouldthesystembebrokendownintoincrementswhichwouldbeofsomevaluetotheusers(hint–thinkabouttheproblemsoftakingexistingdetailsontoadatabasewhenasystemisfirstimplemented).increment1:Createcustomer,Deletecustomerincrement2:Produceinvoice,Amendinvoiceincrement3:Payment,Clearpaidinvoicesincrement4:Producemonthlystatements4.Giventheprojectdatabelow:projectinputsoutputsentityaccessessystemusersprogramminglanguagedeveloperdays12104204010x302469140612520x85351312837618y1084660231088200y16151833673510z2262449756525z4271600320023725y30885828741115z62X1803504020yY48411906935ya)Whatitemsaresizedrivers?inputs,outputs,entityaccesses(systemusersforcertainaspects)b)Whatitemsareproductivitydrivers?Programminglanguagec)Whataretheproductivityratesforprogramminglanguagesx,yandz?x:10FPs/dayy:7FPs/dayz:12FPs/dayx:[(210x0.58+420x0.26+40x1.66)/30+(469x0.58+1406x0.26+125x1.66)/85]/2d)WhatwouldbetheestimatedeffortforprojectsXandYusingaMarkIIfunctionpointcount?FPofProjectXis261.8andFPofProjectYis704.66.Usingtheproductivityrateforprogramminglanguagey,theestimateforProjectXwouldbe262/7i.e.37days,andforProjectY705/7i.e.101days.e)WhatwouldbetheestimatedeffortforXandYusinganapproximateanalogyapproach?ProjectXseemsclosesttoProject5whichprovidesanestimateof22days,andProjectYseemstobeclosesttoProject3whichgivesanestimateof108days.5.ActivityDependsonDurationA5BA7CB6DA5ED10FB15GB8HG8IC4JG4KE,F5LI,H3CreateaPERTactivitynetworkusingabovedata.Calculatetheearliestandlateststartandenddatesandthefloatassociatedwitheachactivity.Fromthisidentifythecriticalpath.Answer:6.Usingtheactivitytimesabove:1.Calcaulatetheexpecteddurationandstandarddeviationforeachactivity2.Identifythecriticalpath3.Drawupanactivitydiagramapplyingcriticalchainprinciplesforthisproject:•Localtheplaceswherebufferswillneedtobelocated.•Assessthesizeofthebuffers•Startallactivitiesaslateraspossible.7.(1)Drawupanactivitynetworkfortheactivitiesbelow,identifyingthecriticalpathSA=Systemsanalyst;SD=Systemsdesigner;SC=Softwarecoder(2)Howmanyofeachtypeofresourcewillneedtoberecruitedfortheprojectasawholeiftheearliestfinishdateistobepreserved?(Supposeeachactivityiscarriedoutbyonlyonestaff)(3)Whatimpactwouldtherebeontheprojectiftherewereonlyonesystemsdesigner?(4)Whatimpactwouldtherebeontheprojectiftherewereonlyonesystemsdesignerandonecoder?8.Answer:9.Answer:
