Cambridge A Level Applied Information and Communication Technology 9713 — 2015 May/June Paper 1 · Variant 3

This document consists of 15 printed pages and 1 blank page. DC (NF/FD) 101215/3 © UCLES 2015 [Turn over Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level * 9 5 4 3 2 1 3 5 3 3 * APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/13 Paper 1 May/June 2015 1 hour 15 minutes Candidates answer on the Question Paper. No additional materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. Do not use staples, paper clips, glue or correction fluid. You may use an HB pencil for any diagrams, graphs or rough working. DO NOT WRITE IN ANY BARCODES. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. The businesses described in this paper are entirely fictitious.

2 9713/13/M/J/15 © UCLES 2015 Scenario 1 Questions 1, 2, 3 and 4 East African Media Ltd, based in Nairobi, owns the African Times newspaper. It has built a new printing plant in Mombasa, many kilometres away. The company also has a factory which manufactures rolls of paper (newsprint) which are used to produce the newspaper. The printing plant needs a constant room temperature for the printing presses to operate in. To keep the temperature constant a microprocessor controlled air conditioning system is used. Many of its reporters work in towns which are far away from the editor’s office in Nairobi. They type up their stories and send them with any photographs by email to their editor. The editor then sets the layout of the story using typesetting techniques on a computer. East African Media Ltd uses the latest technology to print the newspaper. In order to print the paper in Mombasa it requires the use of facsimile transmission. The company uses satellite communications to fax a newspaper for printing.

3 9713/13/M/J/15 © UCLES 2015 [Turn over 1 Below is a diagram of a simple air conditioning system. 9DOYH &RPSUHVVRU (YDSRUDWLQJXQLW &RQGHQVLQJXQLW For each statement below, tick the most appropriate answer. (a) The compressor:  converts cool low-pressure gas into hot high-pressure gas. causes the liquid to evaporate into cold low-pressure gas. monitors the pressure of the refrigerant. is essentially situated outside the building. monitors the temperature of the refrigerant. [1] (b) The valve:  converts cool low-pressure gas into hot high-pressure gas. causes the liquid to evaporate into cold low-pressure gas. monitors the pressure of the refrigerant. is essentially situated outside the building. monitors the temperature of the refrigerant. [1]

4 9713/13/M/J/15 © UCLES 2015 (c) The Condensing unit:  converts cool low-pressure gas into hot high-pressure gas. causes the liquid to evaporate into cold low-pressure gas. monitors the pressure of the refrigerant. is essentially situated outside the building. monitors the temperature of the refrigerant. [1] 2 Tick the four statements referring to process control in this scenario which are true. True  Keeping a constant temperature for the printing presses is an example of batch process control. Batch process control is used to produce extremely large amounts of product per year. Discrete process control is like an on/off or stop/start process. The production of the rolls of paper is an example of continuous process control. Continuous process control is used to produce relatively small amounts of product per year. There are four types of process control. A PLC could be used to control the temperature for the printing presses. Microprocessors are not involved in any aspect of process control. Continuous process control is used in processes which appear to be unending. Discrete process control is when the process is hidden. [4]

5 9713/13/M/J/15 © UCLES 2015 [Turn over 3 (a) Describe what is meant by the term PLC. … … … … … … [3] (b) Describe what is meant by the term PID. … … … … … … [3] 4 (a) Describe how the reporters would use ICT to produce their stories ready for emailing to the editor’s office. … … … … … … [3]

6 9713/13/M/J/15 © UCLES 2015 (b) Describe the features of typesetting that the editor would use. … … … … … … [3] (c) Describe how a completed page would be transmitted from the editor’s office to the printing presses in Mombasa. … … … … [2]

7 9713/13/M/J/15 © UCLES 2015 [Turn over Scenario 2 Questions 5, 6 and 7 The WIMBA car company is producing a new model of car. It wishes to advertise: • all aspects of the company • the car insurance it sells • the new model of car. It is planning to create its own advertising website. Some workers in the advertising department work compressed hours whilst others work flexible hours. Maria is the manager of the car assembly plant. She uses time management software in her work.

8 9713/13/M/J/15 © UCLES 2015 5 (a) For each example below name and describe the type of advertising that would be used. For each type of advertising named, describe an example other than those used in the scenario. WIMBA … … … … Insurance … … … … New car model … … … … [6] (b) A number of input devices are used to import information about the company and its cars for inclusion in the website. Describe, in detail, examples of multimedia information that would be imported using two different input devices for inclusion in the website. 1 … … … 2 … … … [2]

9 9713/13/M/J/15 © UCLES 2015 [Turn over (c) Describe four benefits to the company of creating their own advertising website. 1 … … … 2 … … … 3 … … … 4 … … … [4] (d) Describe the differences between pop ups and pop unders. … … … … … … … … … … [4]

10 9713/13/M/J/15 © UCLES 2015 6 (a) Describe the differences between working flexible hours and working compressed hours. … … … … … … … … … … [4] (b) Describe two benefits to the worker of working flexible hours. 1 … … … 2 … … … [2] (c) Describe two benefits to the company of workers working flexible hours. 1 … … … 2 … … … [2]

11 9713/13/M/J/15 © UCLES 2015 [Turn over 7 Maria uses a Gantt chart similar to the one below to plan the assembly of a car. Activity 0600–1200 1200–1800 1800–2400 0000–0600 0600–1200 1200–1300 Assembling of car body Assembling the chassis Assembling of car engine Painting of car body Fitting of chassis Quality control Road testing the finished car (a) Identify two sequential activities in the Gantt chart shown. … … [1] (b) Identify two parallel activities in the Gantt chart shown. … … [1] (c) The stage of assembling the car body has been delayed by six hours. Describe, in detail, the effects on each of the other activities in the Gantt chart. … … … … … … … … [4]

12 9713/13/M/J/15 © UCLES 2015 Scenario 3 Questions 8, 9, 10 and 11 Mendoza Electricity Group (MEG) is a company in Argentina which sells electricity to its customers. The company operates a call centre for customers who have questions about their bill or wish to pay their bills by phone using a credit or debit card. The call centre uses third party control. Each customer has been given a twelve digit account number by MEG. The company has a computerised system for producing bills. The company likes to update its master file every week in terms of amendments, addition and deletion of records. Every three months (quarter) the bills are produced using the batch processing of the master and transaction files. No customer pays more than 16000 pesos. The company has employed Andrew, a systems analyst, to update the existing system. He will design validation rules to ensure the account numbers entered and the bill calculated are valid.

13 9713/13/M/J/15 © UCLES 2015 [Turn over 8 Describe four features of third party control. 1 … … 2 … … 3 … … 4 … … [4] 9 (a) Identify four items of information, apart from the account number that a customer would be asked for if they were paying their bill by credit card. 1 … … 2 … … 3 … … 4 … … [4] (b) Describe the processing that would take place to produce the customer’s quarterly bill. … … … … … … … … [4]

14 9713/13/M/J/15 © UCLES 2015 10 (a) MEG stores the master file and transaction file on magnetic tape. Explain why the company uses magnetic tape. … … … … [2] (b) For each of these updating activities give one example related to the scenario. Amendment … … Addition … … Deletion … … [3] 11 (a) After information has been collected about the existing system, Andrew will need to record it. He could use Data Flow Diagrams or Systems Flowcharts. Describe these methods. … … … … … … … … [3]

15 9713/13/M/J/15 © UCLES 2015 (b) Any validation rule used will need to be tested. Using either the customer’s account number or the amount on their bill, as appropriate, describe three testing strategies that could be used to test these validation rules. (You do not have to name the validation rules). 1 … … … … 2 … … … … 3 … … … … [6] (c) Improvements may need to be made if the results of testing shows that the validation rules still allow invalid data to be input. Describe with examples three such improvements. 1 … … 2 … … 3 … … [3]

16 9713/13/M/J/15 © UCLES 2015 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

® IGCSE is the registered trademark of Cambridge International Examinations. CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Advanced Subsidiary and Advanced Level MARK SCHEME for the May/June 2015 series 9713 APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/13 Paper 1 (Written A), maximum raw mark 80 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the May/June 2015 series for most Cambridge IGCSE®, Cambridge International A and AS Level components and some Cambridge O Level components.

Page 2 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 1 (a) [1] converts cool low-pressure gas into hot high-pressure gas ✓ causes the liquid to evaporate into cold low-pressure gas monitors the pressure of the refrigerant is essentially situated outside the building monitors the temperature of the refrigerant (b) [1] converts cool low-pressure gas into hot high-pressure gas causes the liquid to evaporate into cold low-pressure gas ✓ monitors the pressure of the refrigerant is essentially situated outside the building monitors the temperature of the refrigerant (c) [1] converts cool low-pressure gas into hot high-pressure gas causes the liquid to evaporate into cold low-pressure gas monitors the pressure of the refrigerant is essentially situated outside the building ✓ monitors the temperature of the refrigerant

Page 3 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 2 [4] Keeping a constant temperature for the printing presses is an example of batch process control. Batch process control is used to produce extremely large amounts of product per year. Discrete process control is like an on/off or stop/start process ✓ The production of the rolls of paper is an example of continuous process control ✓ Continuous process control is used to produce relatively small amounts of product per year. There are four types of process control A PLC could be used to control the temperature for the printing presses ✓ Microprocessors are not used in any aspect of process control Continuous process control is used in processes which appear to be unending ✓ Discrete process control is when the process is hidden 3 (a) Three from: [3] Programmable logic controller A type of microprocessor/computer/microcomputer Used for a single purpose Can accept both analogue and digital inputs Uses a set of logic statements Compares input with a pre-set value Activates output devices/actuator Normally programmed to operate a machine/system using just one program Used in systems where pre-set value is constant (b) Three from: [3] It’s a proportional–integral–derivative algorithm Used when preset value is a constant PID causes the PLC to make proportional changes PID calculates difference between the input value and the preset value Causes PLC to make proportional changes to the output PID checks the difference again Until preset value is reached

Page 4 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 4 (a) Three from: [3] Reporter types up/edits their story using word-processing software/DTP Reporter types up/edits their story using laptop/keyboard Takes photographs using a digital camera/phone Import images from digital camera/phone Edit images using picture/image editing software (b) Three from: [3] Correct font (type) has to be chosen Correct font size has to be chosen Kerning to (adjust the space between individual letters in word) Amend the leading (- the space between lines on a page) (c) Two from: [2] (Digital) signals are used to send the pages up to a satellite Transmitted by the satellite to the printing plant/presses 5 (a) WIMBA Business [1] Advertising of a single company + example [1] Insurance Service [1] Advertising of services such as government/tourism/banking [1] New car model Product [1] Advertising of a specific product + example [1] (b) Two from: [2] Video of the car/company could be imported from video camera/ digital camera Vocal introduction to company could be input using microphone (c) Four from: [4] pop ups from the other company’s site may create unhappy customers who may avoid that company in future/will have poor impression of the company/will tend to ignore them Customers will use pop-up blocking (software) which does not allow their advertising on other company’s website to appear Can make their own website better suited to their needs Own website has shorter delay in updating/improving advertising Company has more control over its own website than it would over the host’s website May be so many other companies’ advertising on host website the company’s may not be seen/not as much advertising can be used/limited space available

Page 5 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 (d) Four from: [4] Pop-ups are small windows which suddenly appear in front of the web page user is working on/pop-unders are small windows placed underneath the web page user is working on Pop-up instantly grabs the attention of the customer/Pop-unders don’t appear to users until they close the page they are working on. Pop-unders are not removed by pop-up blocking/pop ups are blocked by pop up blocking software The customer regards pop-unders as less of an inconvenience than pop-ups 6 (a) Four from: [4] Flexible hours refer to hours that are worked whereas compressed hours refer to days that are worked Flexible hours give workers some choice about what times of each day they work Flexible hours can vary from day to day Compressed hours would be fixed for those days which were being worked fully Workers work the same number of hours each week with flexible hours If compressed hours were spread over two weeks, would work more hours one week than the next (b) Two from: [2] Allows workers to organise their working lives to suit their personal needs Can choose to work off-peak hours as travelling to work outside peak times is easier and cheaper If workers stay late to finish a job, they can take time off at a later date If the job requires great concentration, it can be done at quiet times of day (c) Two from: [2] Can match working hours with busy and not-so-busy times Easier to allow for workers’ personal needs which leads to a reduction in absenteeism/ improved punctuality Working flexitime hours would appeal to many technicians so it helps recruitment/reduces the number of staff leaving for another job Reduces the need for training new staff Working flexitime hours is popular leading to greater productivity

Page 6 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 7 (a) One pair from: [1] Assembling of car body, painting of car body Assembling of car body, fitting of chassis Assembling of car body, road testing the finished car Assembling the chassis, painting of car body Assembling the chassis, fitting of chassis Assembling the chassis, road testing the finished car Assembling of car engine, painting of car body Assembling of car engine, fitting of chassis Assembling of car engine, road testing the finished car Painting of car body, fitting of chassis Quality control, road testing the finished car Painting of car body, road testing the finished car Fitting of chassis, road testing the finished car (b) One pair from: [1] Quality control with any activity except road testing Or two of: Assembling of car body Assembling the chassis Assembling of car engine (c) Four from: [4] Assembling the chassis, assembling of car engine are not affected Painting of car body will now start at 0600/finish at 1200/delayed by six hours Fitting of chassis will now start at 1200/finish at 1800/delayed by six hours Quality control will be extended to 1800/extended by six hours Road testing will now start at 1800/finish at 1900/delayed by six hours 8 Four from: [4] Requires a dedicated telephony server The operator’s phone communicates directly with the server The server controls all the phones Operator’s phone is not directly connected to their computer Any computer in the system can be used to control any phone The server controls all the phones Allow supervisors, for example, to intervene if the call proves too complex for the operator to handle (The server) can direct a call to the appropriate operator Suitable for large call centres

Page 7 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 9 (a) Four from: [4] Card number Expiry date Name (as shown on card) Card Security Code Address (b) Four from: [4] At the end of each billing period Transaction file is sorted into same order as master file Sorted on customer number First record in the transaction file is read First record in the old master file is read If it matches, transaction is carried out If records don’t match, computer writes master file record to new master file Computer calculates the bill Using cost of units from master file Using units used from transaction file Processed record is written to new master file Bill is printed Process is repeated until end of old master file 10 (a) Two from: [2] Magnetic tape has serial access and the files would be sequential/batch processing required Tapes have a greater longevity than most other media Tapes are cheaper per unit of memory (b) Amendment Customers’ details change [1] Addition New customer [1] Deletion Customer closes account/dies [1]

Page 8 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2015 9713 13 © Cambridge International Examinations 2015 11 (a) Data flow diagram [3] Using (two from :) terminators, processes, flow arrows and stores The diagram would represent inputs, outputs and processing System flowcharts Using particular input, output, storage and processing symbols The diagram would represent inputs, outputs and processing (only if not given for DFDs) (b) Two from: [6] (Use of live/normal data) such as a number between 0 and 16000 for the bill (Use of live/normal data) such as a customer number which is exactly 12 characters (Use of live/normal data) such as a customer number which is digits only This data should be accepted by the system Two from: (Use of abnormal data) such as 16001 or “sixteen thousand” (Use of abnormal data) such as a customer number which is less than or greater than 12 characters (Use of abnormal) such as a customer number which contains text This data should be rejected by the system Two from: (Use extreme data) such as 0 or 16000 for the customer bill This data should be accepted by the system (c) Three from: [3] Amend rule to ensure the acceptable value for the bill is >= and <= and not just > and < Amend rule to ensure that it uses 0 to 16000 Amend rule to ensure it checks it is numeric Amend rule to make sure < has not been used instead of > and vice versa Amend rule to ensure length check is 12 exactly Field descriptions are included which adequately inform about field contents