igcse信息ict0417 15年前真题

UNIVERSITYOFCAMBRIDGEINTERNATIONALEXAMINATIONS

InternationalGeneral ofSecondaryEducation

MARKSCHEMEfortheOctober/November2010questionpaperfortheguidanceofteachers

0417INFORMATIONANDCOMMUNICATIONTECHNOLOGY

0417/11 Paper1(Written), umrawmark100

Thismarkschemeispublishedasanaidtoteachersandcandidates,toindicatetherequirementsoftheexamination.ItshowsthebasisonwhichExaminerswereinstructedtoawardmarks.ItdoesnotindicatethedetailsofthediscussionsthattookceatanExaminers’meetingbeforemarkingbegan,whichwouldhaveconsideredtheacceptabilityofalternativeanswers.

Markschemesmustbereadinconjunctionwiththequestionpapersandthereportontheexamination.

CIEwillnotenterintodiscussionsorcorrespondenceinconnectionwiththesemarkschemes.

CIEispublishingthemarkschemesfortheOctober/November2010questionpapersformostIGCSE,GCEAdvancedLevelandAdvancedSubsidiaryLevelsyllabusesandsomeOrdinaryLevelsyllabuses.

Page2

MarkScheme:Teachers’version

Syllabus

Paper

IGCSE–October/November2010

0417

11

©UCLES2010

AcceptanswerswhichhavebeencrossedoutUNLESSthey’vebeenrecedMarkfirstansweronlyexceptifotheranswerspaceshavebeenleftblank

Donotacceptgeneralisedtermssuchasquicker/cheaper/moreefficientunlessqualified

A Remotecontrol(1)

B Touchpad(1)

C (1)

D numerickeypad(1) [4]

DVDRAM(1)

barcodereader joystick

magnetictape(1)

sensor touchscreen [2]

True

False

DTPsoftwarecanbeusedwithsoundfiles

✓

Measurementsoftwareisusedtosend s

✓

Spreadsheetsoftwareisusedtocreatemodels

✓

Acommandlineinterfacecanbeusedtocommunicatewithacomputer

✓

PDAsareusuallybiggerthanlaptops

✓

3

(1)

(1)

(1)

(1)

(1)

[5]

4 (a)Atemperaturesensor isusedtosenddatatoamicroprocessorcontrolledcooker [1]

Achipreader isusedtoreaddetailsfromabankcard [1]

Ajoystick isusedtocontrolacardrivingsimulator [1]

Adigitalcamera isusedtotakephotographsforinclusioninawebsite [1]

Anopticalmarkreaderisusedtoreaddatafromaschoolregister [1]

Page

PAGE

3

MarkScheme:Teachers’version

Syllabus

Paper

IGCSE–October/November2010

0417

11

©UCLES2010

Amodem

A scanner

✓

An package

✓

AnotherPC

Abrowser

✓

Akeyboard

5

(1)

(1)

(1)

[3]

Field

File

Record

Alltheinformationaboutonestudent

✓

Onepieceofinformationaboutthestudents

✓

Aprimarykey

✓

Alltheinformationaboutallthestudents

✓

6

(1)

(1)

(1)

(1)

[4]

7 RIGHT 90

REPEAT 6

FORWARD 50

LEFT 60

ENDREPEAT

1markforeachcorrectstatement [5]

True

False

Computerisedbookingofatheatreticket

✓

Clearingchequesovernight

✓

PayingatasupermarketusingElectronicFundstransfer

✓

Printingmonthlycreditcardbills

✓

8

(1)

(1)

(1)

(1)

[4]

Page

PAGE

4

MarkScheme:Teachers’version

Syllabus

Paper

IGCSE–October/November2010

0417

11

©UCLES2010

9 (a)

(1)

(1)

(1)

Companiesdon’thavetoemploysomanyworkers

Companiescancallmeetingsatshortnotice

✓

Employeesdon’thavetoprepareformeetings

Companiesdonothavetopaytravellingexpenses

✓

Employeescanworkfromhome

✓

Companiesdon’thavetohaveanyoffices

[3]

Itisdifficulttocallinternationalmeetingsbecauseoftimedifferences

✓

Employeescan’tseetheswhicharebeingdiscussed

Theinitialcostofhardwarecanbeexpensive

✓

Thereisalossof alandsocialcontact

✓

Companiesareunabletocontacttheemployeesabouthavingaconference

Companieshavetohireexpensivehalls

(b)

(1)

(1)

(1)

[3]

(a)Registrationnumber–Alphanumeric/Text(1)Day/Month/YearofManufacture–Date(1)Doors–Numeric/integer(1)

Airconditioning–Boolean/logical(1) [4]

RAM–Sothatusersareabletomakechangestothedatatheyareworkingon/tostoretheprogramordatatheyarecurrentlyusing(1)

ROM–Sothatprograms/coding/softwarecanbestoredpermanently/cannotbechanged(1)Backingstorage–Sothatuserscanhaveapermanentcopyoftheworktheyareng/canhaveacopyoftheirworkwhenthecomputerisswitchedoff(1) [3]

Fourfrom:InferenceengineRulesbaseKnowledgebase

(In ctive)userinterfaceEx nationsystem

Easytounderstandoutputscreen [4]

Page5

MarkScheme:Teachers’version

Syllabus

Paper

IGCSE–October/November2010

0417

11

©UCLES2010

13

storingdatainonlineapplications DVDROM

tostoredatathatcannotbechanged Fixedharddiscsavingworkandtransportingittoothercomputers Magnetictape

takingbackupsoffileservers Pendrive [4]

(a)Twofrom:

Clickingthemouse(cancausepainsinthefingers)

Tyonthekeyboard(cancausewristpains/carpaltunnelsyndrome)

/

/

Holdingofsyndrome)

TextingusingPDAs/

swithbenbow(cancausepainintheelbows/cubitaltunnels(cancausepaininthethumbs) [2]

Twofrom:

Electrocutionbytouchingloosewires/spillingliquidsonelectricalcontactsTripandfallinertrailingwiresorcables

Physicalinjurytofeet/legsetc.causedbyheavyequipmentfalling

Firecausedbytoomanyplugsinmultisocketandtherebyoverheatinerheatingofequipment [2]

(a)Hub(1)

Switch(1)

Bridge(1) [3]

Twofrom:

ItstoresinformationaboutwhichcomputerisconnectedtowhichnetworkItreceivesdatapacketsfromanindividualcomputer

ItpassesthedatapacketstotheappropriateswitchToreducedollisions

ItcanconnecttheLANstotheinternet [2]

2maxforthreepairsfrom:Usernameandpassword(1)

Itisverydifficultforhackerstoguesspasswords/ifyoudon’tknosswordcannotgainaccesstosystem/data/needtoknowbothusernameandpasswordtogainaccess/(1)

Biometricdata–retinascan,fingerprints/handprints,voicerecognitionetc.(1)Eachoftheseisunique/verydifficulttoreplicate(1)

Magneticstripecardforentryintopremises(1)Difficulttoreplicatesecurityinformationonstripe(1)

PINforentrytopremises(1)

ItisverydifficultforhackertoguessPIN(1)

Digital(1)

Confirmstheoriginofthe(1) [6]

Fourfrom:

Technical ationhastobeproducedforsystemsysts/programmers

Withouttechnical ation ystsprogrammerswouldnotknowhowthesystemworksWithouttechnical ation ysts/programmerswouldnotbeabletoupdate/improvesystem

Withouttechnicalationysts/programmerswouldnotbeabletorepairsystemwhenitmalfunctions

User ationneedstobephrasedinawaythattheaveragenon-expertcanunderstandWithoutuser ationuserswouldnotbeabletooperate/usethesystem

Mustgainatleastonemarkforeachofuserandtechnicaltogainfullmarks [4]

(a)Twofrom:

Apieceofprogrammingcode/softwareWhichreplicatesitself

Transmittedthroughattaents/portablemediaCorrupts/Deletesfiles/data

Cancorruptorerasethecontentsoftheharddisk/cancompleyfilltheharddisc/memory

[2]

Twofrom:

Gainingunauthorisedaccesstoacomputersystem(Mayleadto)illegallycopyingdatafromasystem(Mayleadto)illegallyamendingdatainasystem(Mayleadto)illegallydeletingdatafromasystem

Gainingauthorisedaccesstoasystembutexceedingtheirauthority [2]

(a)Fivefrom:

Data/fieldsshouldbespreadoutmore/fontsizeincreased

Dataforname/address/customerIDcouldhavetextboxesforcompletion

Date of birth could be a drop down list/prompt to show order of data e.g.dd/mm/yyyy/calendarprompt(tochooseadate)

Genderfieldcouldhaveradiobuttonsformale/female/tickbox/dropdownlistTogobackorforwardcouldhavebuttons/arrowicons

Moredata/fieldscouldhavebeenused(acceptexamples)Includeaheading(nameof/Logo)

Addasubmit/accept/savebutton [5]

(i)Datathatisoutsidetherange/notoftherighttype(1)

Example:anumberlessthanone/anumbergreaterthan12/text(1)

Datathatisvalid/acceptable/withintherange/correcttype(1)Example:anynumberbetween1and12inclusive(1)

Datathatisattheedgeoftherange(1)1or12(1)

Threefrom:

Data/filestructuresmayneedtobeamended/improvedValidationroutinesmayneedtobeamended/improvedInputmethodsmayneedtobeamended/improvedOutputformatsmayneedtobeamended/improved

Errorsinprocessing/calculationsmayneedamending/correctingErrorsmaymeanthatpartsofsystemneedamending/correcting

Ifsystemdoesnotworkatallmayneedtorestartatthedesignstage [3]

Sixfrom:

Laserprinter/InkjetprinterhigherqualityoutputthanDotmatrixprinterLaserprinter/InkjetprinterfasteroutputthanDotmatrixprinter

Laserprinter/InkjetprinrerelativelyquietcomparedtoDotmatrixprinter

Laserprinterhaslimitedsizesofpaperavailable/Inkjethasgreatersizesofpaperavailable/Dotmatrixisunlimitedinsizeinonedirectiononly

Laserprinter/Inkjetprinterissusceptibletobreakdowninoily/dirtyconditions/Dotmatrixprinterlesslikelytobreakdowninoily/dirtyconditions

Laserprinter/Inkj