0417 INFORMATION AND COMMUNICATION TECHNOLOGY

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Junior McBride
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1 CAMBRIDGE INTERNATIONAL EXAMINATIONS Interntionl Generl Certificte of Secondry Eduction MARK SCHEME for the My/June 2014 series 0417 INFORMATION AND COMMUNICATION TECHNOLOGY 0417/11 Pper 1 (Written), mximum rw mrk 100 This mrk scheme is published s n id to techers nd cndidtes, to indicte the requirements of the exmintion. It shows the bsis on which Exminers were instructed to wrd mrks. It does not indicte the detils of the discussions tht took plce t n Exminers meeting before mrking begn, which would hve considered the cceptbility of lterntive nswers. Mrk schemes should be red in conjunction with the question pper nd the Principl Exminer Report for Techers. Cmbridge will not enter into discussions bout these mrk schemes. Cmbridge is publishing the mrk schemes for the My/June 2014 series for most IGCSE, GCE Advnced Level nd Advnced Subsidiry Level components nd some Ordinry Level components.

It does not indicte the detils of the discussions tht took plce t n Exminers meeting before mrking begn, which would hve considered the cceptbility of lterntive nswers.

2 Pge 2 Mrk Scheme Syllbus Pper 1 A Desktop computer B Inkjet printer C Opticl disc D Trckerbll 2 Two from: Motor Light Heter Monitor Printer Grph plotter LED disply LCD disply Buzzer [2] 3 Two from: Fster dt ccess times Fster dt trnsfer rte Stores more dt [2] 4 True Flse OMR is used to red dt from multi choice question ppers. OCR is used to red dt from word processed documents. DTP is used to crete finncil models. Regulr use of computers improves your eyesight.

trnsfer rte Stores more dt [2] 4 True Flse OMR is used to red dt from multi choice question ppers.

3 Pge 3 Mrk Scheme Syllbus Pper 5 Fewer books cn be borrowed. Librries cn sty open longer. More informtion is more esily vilble to borrowers. More people work t the librry. Nobody borrows books ny more. The librrin is utomticlly notified when books re lte. 6 PENDOWN RIGHT 90* PENUP LEFT 90 PENUP * FORWARD 15 FORWARD 15 FORWARD 15 RIGHT 90 * RIGHT 90 PENDOWN PENDOWN* FORWARD 65 FORWARD 50 FORWARD 65 *Denotes interchngeble sttements 1 mrk for every pir of instructions [6] 7 () =SUM(B3:D3) or =B3+C3+D3 (b) =MAX(B3:B6) 8 () Two from: Temperture sensor Number pd Remote control Touch screen [2] (b) Three from: Microprocessor stores required temperture s preset vlue Microprocessor receives temperture from sensor Microprocessor compres temperture from sensor to pre-set temperture If temperture is lower thn preset vlue microprocessor sends signl to the ctutor. to turn heter on If higher thn preset vlue microprocessor sends signl to turn heter off [3]

6 PENDOWN RIGHT 90* PENUP LEFT 90 PENUP * FORWARD 15 FORWARD 15 FORWARD 15 RIGHT 90 * RIGHT 90 PENDOWN PENDOWN* FORWARD 65 FORWARD 50 FORWARD 65 *Denotes interchngeble sttements 1 mrk for every pir

4 Pge 4 Mrk Scheme Syllbus Pper 9 () (i) Alphnumeric/text (ii) Boolen/logicl (iii) Numeric/integer (b) Formt/picture/length 10 () Three from: Humidity Temperture Pressure (Sun)light Rinfll [3] (b) (i) Sensor mesures nlogue dt Computer works in digitl (ii) Anlogue to digitl converter (c) Three from: Computer cn tke redings during holidys Computer (redings) re more ccurte Students might forget to tke redings/redings cn be tken t regulr intervls Redings cn be tken more frequently Redings cn be tken ny time of dy or night Cn produce grphs more quickly/utomticlly [3] Collect informtion bout the existing system. 2. Design file structure. 3. Develop the new system. 4. Implement the new system. 5. Evlute the new system. 5 in correct order = 5 Any 4 in the right order = 4 mrks Any 3 in the right order or position = 3 mrks Any 2 in the right order or position = 2 mrks Collect informtion first (the rest wrong) or Evlute the system lst (the rest wrong) = 1 Just hving one item in correct position (except collect or evlute) = 0 [5]

tke redings/redings cn be tken t regulr intervls Redings cn be tken more frequently Redings cn be tken ny time of dy or night Cn produce grphs more quickly/utomticlly [3] 11 1.

5 12 () Pge 5 Mrk Scheme Syllbus Pper Text Integers Sound Deciml numbers Video Grphics (b) Two from: Microphone Sound crd Spekers [2] (c) Two mtched pirs from: Desk Top Publishing Producing the lyout/templte of the brochure Dtbse List of chrcters/ctors Spredsheet Prices/list of refreshments nd costs Word processing Type/enter/crete/produce the text for the brochure/don t llow write (up) the informtion Imge editing softwre/grphics pckge To prepre imges for inclusion in brochure [4] 13 () Two from: Switched hub Hs mny computers connected to it Cn lern/store ddresses of ech computer in tht prt of the network Cn direct dt to specific computers/devices [2]

Type/enter/crete/produce the text for the brochure/don t llow write (up) the informtion Imge editing softwre/grphics pckge To prepre imges for inclusion in brochure

6 Pge 6 Mrk Scheme Syllbus Pper (b) Two from: Connects network/computers to the internet Uses IP ddresses Trnsfers dt between networks Connects LANs/networks together [2] 14 () Three from: Hckers my red the dt nd pss it on/find out embrrssing detils nd pss it on Hckers my delete the dt/remove ccounts Hckers my mend the dt/chnge how much money they hve in their ccount Hckers my crete new ccounts to defrud the bnk Trnsfer money from customer s ccounts to hcker s own ccount [3] (b) Three from: Usernmes identify the customer to the system/psswords customers cn t ccess the system if they don t know the pssword/unuthorised users will not know the pssword/memorble dt only people who know the memorble dt will be ble to ccess the ccount Biometric methods re used becuse they re unique to ech customer so only customer with specific biometric fetures cn ccess tht ccount TAN only customers with the phone tht the TAN hs been sent to nd know the pssword cn ccess the ccount Two fctor uthentiction only people with device, crd nd PIN cn ccess the ccount Mgnetic stripe/smrt crd/dongle/crd with chip prevents people without crds/reders/dongle ccessing system [3] 15 () Two from: Fewer printers re needed Fewer scnners re needed Cn ccess work from ny computer Dt cn be shred between computers/dt cn be ccessed by one computer from nother more esily Softwre cn be shred/updted more esily All computers cn ccess the internet /through one connection [2] (b) Three from: Greter risk of hckers Greter risk of viruses The significnt cost of extr equipment When the network is down, cnnot use network computers/cn still use stndlones Print queues cn be long [3]

to defrud the bnk Trnsfer money from customer s ccounts to hcker s own ccount [3] (b) Three from: Usernmes identify the customer to the system/psswords customers cn t ccess the system if they don t

7 Pge 7 Mrk Scheme Syllbus Pper (c) Six from: Advntges Lptops cn be trnsported from room to room more esily Sfer won t trip over loose cbles Cn use lptops outside the clssroom if required Cn be used even if there s power cut Disdvntges Lptops my be more expensive thn network PCs. Disply is smller Lptops will need rechrging periodiclly Hve to be in rnge of network point One mrk vilble for resoned conclusion Must hve t lest one dvntge nd disdvntge to gin full mrks [6] 16 Six from: Advntges Less dnger of mugging Don t hve to wste time trvelling/queuing Don t hve to spend money on trvelling to shops Greter choice of goods Cn shop when shops re closed Esier to serch nd find wht you re looking for Comprison websites will find you the chepest option Goods my be cheper s shops hve less stff to py/less premises to rent Don t hve to py cr prking chrges Don t hve to py for shopping bgs Vouchers/specil dels re often only vilble online/online discounts Disdvntges Lck of socilising/socil contcts Hckers my intercept dt nd defrud customer Deprived of personl touch Cnnot see/feel goods in relity More vulnerble to phishing/phrming Goods sometimes don t rrive/substitute goods my be sent/tke longer to rrive/my be delivered to wrong ddress Shipping chrges ISP costs/possible high connection chrges Initil cost of equipment/phone line Postl costs of returning items One mrk vilble for resoned conclusion Must hve t lest one dvntge nd disdvntge to gin full mrks [6]

Disply is smller Lptops will need rechrging periodiclly Hve to be in rnge of network point One mrk vilble for resoned conclusion Must hve t lest one dvntge nd disdvntge to gin full mrks [6] 16 Six

8 Pge 8 Mrk Scheme Syllbus Pper 17 () Five from: Current system is observed: Mechnics/potentil users interviewed Mechnics/potentil users given questionnires Gther informtion from mnufcturers/bout current system/from experts Existing documents exmined Inputs, outputs nd processing of the current system determined Problems with current system identified User nd informtion requirements identified System specifiction decided Knowledge bse designed Inference engine designed Rules bse designed User interfce designed Hrdwre chosen [5] (b) Two from: Medicl dignosis Minerl prospecting Tx Creers Chess gmes Animl/plnt clssifiction/identifiction Computer fult dignosis [2] 18 Two problems from: Hedches Eyestrin Bckche Two mtching methods from: Use nti-glre screen (hedches/eyestrin) Tke regulr breks (ll) Use stright bcked chir/ergonomic/mintin good posture (bckche) [4] 19 () Three from: Norml dt Abnorml dt Extreme dt Live dt [3] (b) Benefit cheper s only one set of workers needed Drwbck hve no bckup system to fll bck on

identified System specifiction decided Knowledge bse designed Inference engine designed Rules bse designed User interfce designed Hrdwre chosen [5] (b) Two from: Medicl dignosis Minerl prospecting Tx

9 Pge 9 Mrk Scheme Syllbus Pper (c) Four descriptions from: Phrmcist cn sve queries bout detils of medicines Phrmcist cn crete reports of stock Phrmcist cn crete chrts of sles Phrmcist cn sort medicine records Phrmcist cn enter dt using Input forms Phrmcist cn derive costs of re-ordering medicines using clculted fields Description of how two tbles could be linked by the phrmcist [4]

sort medicine records Phrmcist cn enter dt using Input forms Phrmcist cn derive costs of

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