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2015 HIGHER SCHOOL CERTIFICATE EXAMINATION
Information Processes and Technology
General Instructions
•Readingtime–5minutes
•Workingtime–3hours
•Writeusingblackpen
•Drawdiagramsusingpencil
Total marks – 100
Section I Pages 2–8
20 marks
•AttemptQuestions1–20
•Allowabout40minutesforthissection
Section II Pages9–12
40 marks
•AttemptQuestions21–24
•Allowabout1hourand10minutesforthissection
Section III Pages13–16
40 marks
•AttemptTWOquestionsfromQuestions25–28
•Allowabout1hourand10minutesforthissection
– 2 –
Section I
20 marksAttempt Questions 1–20Allow about 40 minutes for this section
Usethemultiple-choiceanswersheetforQuestions1–20.
1 Atwhichofthefollowingstagesofsystemdevelopmentisarequirementsprototypeusedtomodelfeaturesofaproposedsystem?
(A) Designingasolution
(B) Understandingtheproblem
(C) Implementingandtestingasolution
(D) Evaluatingandmaintainingthesystem
2 SamhasaccesstoLee’sprivatecontactdetailsviasocialmedia.
SamsharedLee’sdetailswithacousinwhodoesnothaveaccesstoLee’ssocialmediasite.
HowisSam’sactionbestdescribed?
(A) Unethicaluseofinformation
(B) Infringementofcopyrightlaws
(C) Appropriateinformationuse
(D) Breachofgovernmentlegislation
3 Whichofthefollowingsetsoftasksisusuallyperformedbyanetworkadministrator?
(A) Addingusersandcreatingwebpages
(B) Addingusersandassigninguserstoprinters
(C) Updatingadatadictionaryandcreatingwebpages
(D) Updatingadatadictionaryandassigninguserstoprinters
–3–
4 ConsiderthispieceofHTMLcode.
<a href=“optic_fibre.html”> <img src=“optic_fibre.jpg”></a>
WhichofthefollowingbestdescribeswhattheHTMLcodedoes?
(A) Itrunsavideo.
(B) Itinsertsanimage.
(C) Itcreatesavideothatishyperlinked.
(D) Ithyperlinksanimagetoawebpage.
5 Kate isproducingagraduationvideotobeuploadedto theschoolwebsite.Thevideoneedstobereadyinonemonthandsheisnotsureifshehasthesoftwareonherlaptoptoproducethevideo.
WhichcombinationoffeasibilityconcernsappliestoKate’ssituation?
(A) Schedulingandtechnical
(B) Schedulingandeconomic
(C) Organisationalandtechnical
(D) Organisationalandeconomic
6 Thenetworkadministratorhasemailedthisalerttostaff.
Movil AcademyUser ID:
Password:
Subject: URGENT NOTICETo: Movile-staff
If you see this screen, do NOT provide your login details.
Warm regards,Network Administrator
Whatissueisbeingaddressedbythenetworkadministrator?
(A) Security
(B) Encryption
(C) Datacollection
(D) Dataredundancy
– 4 –
7 Whichhardwarecomponentisnecessarytophysicallyconnectaclienttoaserver?
(A) Modem
(B) Repeater
(C) WirelessAccessPoint
(D) Networkinterfacecard
8 Aprojectteamhasconductedareviewforupgradingalibrarysystem.
Whichdocumentshouldtheprojectteamproducetodetailthepurposeoftheupgrade,theanalysisoftheexistingsystemandthetimeframeoftheproject?
(A) AGanttchart
(B) Arequirementsreport
(C) Afeasibilitystudyreport
(D) Acommunicationmanagementplan
9 Apersonclicksonamovienametoshowthesessiontimesonacinemawebsite.
Whichcombinationofinformationprocessesisbeingcarriedout?
(A) Analysing,storing,receiving
(B) Collecting,storing,displaying
(C) Analysing,organising,receiving
(D) Collecting,organising,displaying
10 Aprojectteamhasjustcompletedtheinstallationofthehardwareandsoftwareforanewsystem.
Whichofthefollowingismostlikelytobethenextstep?
(A) Clarifythepurposeofthenewsystem
(B) Produceaworkingmodelofthenewsystem
(C) Developanoperationmanualforparticipants
(D) Investigatealternativesolutionsforparticipants
–5–
11 Whatisthemainfunctionofaswitchinacommunicationsystem?
(A) Itlinkstwoidenticalnetworks.
(B) Itlinkstwodifferenttypesofnetworks.
(C) Itconnectsanetworkdevicetotheinternet.
(D) Itenablesnetworkdevicestotalktoeachother.
12 Acompanyhasdecidedtoreplaceitscurrenttwistedpaircablingwithopticalfibre.
Whichofthefollowingcouldbeareasonforthisdecision?
(A) Bettererrorcorrection
(B) Largerstoragecapacity
(C) Fasterdatatransmission
(D) Morereliablewirelessconnectivity
13 Severalemployeeswereaskedtoobtainfeedbackfromcustomersonanewproduct.Toachievethis,theycreatedanonlinesurveyformtocapturedata.
Whichdevelopmentapproachwasused?
(A) Customisation
(B) Participant
(C) Outsourcing
(D) Traditional
14 Whichof thefollowingactionsismost likelyto improvethereliabilityofemployees’detailsstoredinacompany’sdatabase?
(A) Storethedatabaseoff-site
(B) Runaviruscheckeachday
(C) Reviewpersonaldetailseachyear
(D) Performafullbackupeachweek
– 6 –
15 WhatistheprotocolSSLcommonlyusedfor?
(A) Toestablishaconnectionbetweentwocomputersonanetwork
(B) Toreceiveandsendfilesbetweencomputersonanetwork
(C) Toestablishanencryptedlinkbetweenawebserverandabrowser
(D) Toreceiveandsendemailmessagesbetweenabrowserandaserver
16 Which row of the following table correctly describes centralised and distributeddatabases?
Centralised databases Distributed databases
(A) Onlysuitableforflatfiledatabases Noneedtosynchronisedatastored
(B) OnlysuitableforflatfiledatabasesAllowsdifferentlocationsfasteraccesstorelevantdata
(C)Allowsdifferentlocationstoaccessdatafromasinglesource
Noneedtosynchronisedatastored
(D)Allowsdifferentlocationstoaccessdatafromasinglesource
Allowsdifferentlocationsfasteraccesstorelevantdata
17 Whichofthefollowingisatransmissionlevelprotocol?
(A) SMTP
(B) Ethernet
(C) InternetProtocol
(D) HyperTextTransferProtocol
– 7 –
18 Asportingclubmanagerwantstosearchtheclub’sdatabaseformemberswhoareunder16aswellasmemberswhoplaysoccer.
WhichofthefollowingisthecorrectSQLcriteriatoobtainthisinformation?
(A) Age<16ORsport=‘soccer’
(B) Age<16ANDsport=‘soccer’
(C) Age>16ORsport=‘soccer’
(D) Age>16ANDsport=‘soccer’
19 Adatabaseisbeingdesignedforanonlinepharmacy.AcustomercanordermorethanonedrugandarecordisplacedintheTransactionstableforeachdrugordered.
Thediagrambelowdescribessomecomponentsalreadyidentifiedforthedatabase.
Customers
Customer_ID (P)
Surname
Given_Name
Transactions
Transaction_ID
Customer_ID
Drug_ID
Date
Drugs
Drug_ID (P)
Drug_Name
Cost
Key(P) = Primary key
WhataretherelationshipsbetweentheCustomersandTransactions tablesandbetweentheTransactionsandDrugs tables?
Customers – Transactions Transactions – Drugs
(A) manytoone manytoone
(B) manytoone onetomany
(C) onetomany manytoone
(D) onetomany onetomany
– 8 –
20 Thetablebelowshowstheresultsofthetransmissionofthreedatabytes.
First byte Second byte Third byte
01100111 10011001 11000101
Twoofthedatabyteswerecorruptedduringtransmission.
Which parity was used, and which two of the data bytes were corrupted duringtransmission?
Parity Corrupted data bytes
(A) Odd Firstandsecond
(B) Odd Secondandthird
(C) Even Firstandsecond
(D) Even Secondandthird
– 9 –
Section II
40 marksAttempt Questions 21–24Allow about 1 hour and 10 minutes for this section
Answereachquestionintheappropriatewritingbooklet.Extrawritingbookletsareavailable.
Ifyouincludediagramsinyouranswer,ensurethattheyareclearlylabelled.
Question 21 (10marks)UsetheQuestion21writingbooklet.
A school library has set up a video-on-demand information system. Teachers andstudentscanaccessthesystemusingavalidemailaddressandpassword.
Atschool,videosareaccessedvia theschool’sserverusing the localareanetwork(LAN).Athome,videosare suppliedbyanonlineprovidervia the internetoverawideareanetwork(WAN).
(a) Drawacontextdiagramrepresentingthevideo-on-demandinformationsystem. 3
(b) Recommend a suitable network topology for the LAN in this informationsystemandjustifyyourchoice.
3
(c) Explain theadvantagesofusingaLANcompared tousingaWANtoaccessvideosinthisinformationsystem.
4
–10–
Question 22 (11marks)UsetheQuestion22writingbooklet.
Asportingclub isplanning toautomate theentryprocess to itsvariousvenues.Atpresent,whenamemberentersavenue,astaffmemberenterstheirmembershipcardnumberintoacomputersystemtoseeifthememberhasanexpiredmembershipcardorifthememberhasbeenbannedfromtheclub.Noentrywillbeallowedusinganexpiredorbannedmembershipcard.
Intheproposedsystem,anentrymachinewillbeinstalledineachofthevenuesoftheclubandmemberswillonlyhavetoinserttheirmembershipcardsintothemachinestoenter.Themachineswillautomaticallychecktheexpirydateofeachmembershipcardandwhetherthememberhasbeenmarkedas‘banned’inthedatabase.Ifentryisrefused,anexplanationwillbeprintedforthemember.
(a) Constructadecisiontabletodescribetherulesusedtodetermineifamemberisallowedtoentertheclub.
3
(b) DrawadataflowdiagramtorepresenttheproposedentrysystemforONEoftheclub’svenues.
4
(c) Recommend a combination of conversion methods for the implementationof theproposedsystemintoallof thesportingclub’svenuesandjustifyyourchoice.
4
–11–
Question 23 (8marks)UsetheQuestion23writingbooklet.
A bank has introduced an information system that allows customers to withdrawmoneybymakingarequestontheirmobilephone.Usingthissystem,thecustomerwillbesentatemporarywithdrawalcodeinatextmessageaftermakingawithdrawalrequest.Thewithdrawalcodecan thenbeenteredat anATMfor themoney tobereleased.
Alternatively, the customer can provide the bank with the mobile phone numberof an authorisedperson and thebankwill send a textmessagewith the temporarywithdrawal code to this person. This system can be useful in situations where acustomerhaslosttheircardormaywanttosendmoneytotheirchildrenorrelatives.
(a) Using an example, distinguish between a user and a participant in thisinformationsystem.
3
(b) Analysetheinformationsystemintermsoftheinformationprocessesof:
• storingandretrieving
• transmittingandreceiving.
5
–12–
Question 24 (11marks)UsetheQuestion24writingbooklet.
Anonlinedepartmentstorehasintroducedaloyaltysystemthatoffersitscustomersgiftswhentheyhaveaccumulatedanumberofpoints.
Whenacustomerappliesforaloyaltycard,theyenterpersonaldetailssuchasname,address,ageandincomelevelonline.Thesedetailsarekeptbythedepartmentstore.
Whenever a customer presents their card during a purchase, details such as brandnames,quantities,discountreceived,amountspent,anddateandtimeofpurchasearecollectedandstored.
Data mining is performed on the stored data. The store uses this information todeterminepurchasingandpromotionalstrategies.Italsosharesthisinformationwithitsbusinesspartnerssothattheycansenddirectadvertisingemailstothecustomers.
(a) Outlinehowcyclic redundancycheck (CRC)canbeused in this informationsystem.
2
(b) Discusstheuseofdatamininginthisinformationsystem. 4
(c) Describehowinternet,intranetandextranettechnologieswouldbeusedinthisinformationsystem.
5
–13–
Section III
40 marksAttempt TWO questions from Questions 25–28Allow about 1 hour and 10 minutes for this section
AnswereachquestioninaSEPARATEwritingbooklet.Extrawritingbookletsareavailable.
Ifyouincludediagramsinyouranswer,ensurethattheyareclearlylabelled.
Question 25 — Transaction Processing Systems (20marks) UseaSEPARATEwritingbooklet.
(a) Whatisatransactionprocessingsystem? 2
(b) Whyarebothoff-sitestorageandon-sitestoragenecessarywhenbackingupatransactionprocessingsystem?
3
(c) Describe how online transaction processing (OLTP) has contributed to thedevelopmentoftransactionprocessingsystems.
3
(d) Explainhowdataintegrityanddataqualitycanbemaintainedinatransactionprocessingsystem.
4
(e) Anewtransportsystemhasbeenproposedtoconsolidate themanagementofbuses,trainsandferries.
Theproposedsystemwillhaveacentralisedpaymentsystem.Eachcustomerwillhaveasmarttaglinkedtoasmarttagaccountwhichischargedeachtimeacustomerusesthetagtogetoffabus,atrainoraferry.Thesmarttagaccountisalsolinkedtothecustomer’sbankaccountsothatthebalanceofthesmarttagaccountcanbeautomaticallyupdatedwhenitfallsbelowacertainvalue.
Customerscanviewdetailsoftheirtransactionsonthewebsiteofthepaymentsystem.Statementsdetailingthecost,time,startinglocationanddestinationwillalsobeemailedtocustomerseverymonth.
(i) Outlinereal-timeandbatchprocessingthatwouldoccurinthecentralisedpaymentsystem.
3
(ii) Discuss issues that could arise from implementing the centralisedpaymentsystem.
5
–14–
Question 26 — Decision Support Systems (20marks) UseaSEPARATEwritingbooklet.
(a) Whatisadecisionsupportsystem? 2
(b) Howaregeographicinformationsystemsusedtosupportdecisionmakinginadecisionsupportsystem?
3
(c) Describe how spreadsheets can assist with the analysis of data in a decisionsupportsystem.
3
(d) Using examples, distinguish between forward and backward chaining in anexpertsystem.
4
(e) Anewtransportsystemhasbeenproposedtoconsolidate themanagementofbuses,trainsandferries.
The proposed system will have a centralised traffic management system thatwilluseneuralnetwork technology toanalyse trafficdata inorder toprovidesmootherjourneysforcustomerswhohavetochangebusesortrains,orconnectfromonemodeoftransporttoanother.Forexample,ifbusesarerunninglate,some train timetablesmaybeadjusted toallow for theconnection.Alertsondelays,trafficcongestionanddetours,andsuggestionsofalternativerouteswillalsobegeneratedforcustomerstoaccessusingmobiledevices.
(i) Outlinethebenefitsofusingneuralnetworktechnologyinthecentralisedtrafficmanagementsystem.
3
(ii) Explainproblemsthatcouldarisefromusingneuralnetworktechnologytoimplementthecentralisedtrafficmanagementsystem.
5
–15–
Question 27 — Automated Manufacturing Systems (20marks) UseaSEPARATEwritingbooklet.
(a) Whatisanautomatedmanufacturingsystem? 2
(b) Howcanbarcodereadersbeusedinanautomatedmanufacturingsystem? 3
(c) Describehowamachine-centredsystemworksinanautomatedwarehouse. 3
(d) Using examples, distinguish between underdamping and overdamping in anautomatedmanufacturingsystem.
4
(e) Anewtransportsystemhasbeenproposedtoconsolidate themanagementofbuses,trainsandferries.
The proposed system will have a centralised control system that will usecontrollers,sensorsandactuatorstoregulatetheflowoftrafficacrosstheentiretransport system. Manually controlled gates and timed signal lights will bereplaced.Forexample,sensorswillbeactivatedwhenacarapproachesasetoftrafficlights,andthecontrollerwilldirectthelightstoallowthecartopassifthereisnoothertraffic,orstopthecarifthereistraffic.
(i) Outline the types of sensors and actuators that could be used in thecentralisedcontrolsystem.
3
(ii) Explain the potential benefits of implementing the centralised controlsystem.
5
Please turn over
–16–
Question 28 — Multimedia Systems (20marks) UseaSEPARATEwritingbooklet.
(a) Whatisamultimediasystem? 2
(b) Whataretheadvantagesofproducinganonlineversionofamagazinecomparedtoitsprintversion?
3
(c) Distinguishbetweenhierarchicalandnon-linearstoryboard layouts.Youmaysupportyouranswerwithdiagram(s).
3
(d) Describe how head-up displays and headsets are used in virtual realityapplications.
4
(e) Anewtransportsystemhasbeenproposedtoconsolidate themanagementofbuses,trainsandferries.
The proposed system will have a centralised multimedia information systemthatwillprovidecustomerswithaccesstomaps,transporttimetablesandlivevisualandaudioalertsabouttrafficandroadconditions.Customerscanaccessthisinformationusingmobiledevices.
(i) Outlinetheskillsrequiredofcontentprovidersandsystemdesignersinthedesignofthecentralisedmultimediainformationsystem.
3
(ii) Discuss technical issues that could arise from implementing thecentralisedmultimediainformationsystem.
5
End of paper
©2015BoardofStudies,TeachingandEducationalStandardsNSW
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