Cambridge A Level Applied Information and Communication Technology 9713 — 2015 Oct/Nov Paper 1 · Variant 2

This document consists of 16 printed pages. DC (LM) 116412 © UCLES 2015 [Turn over Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level * 4 5 3 3 7 7 8 9 1 6 * APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/12 Paper 1 October/November 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 a 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 9713/12/O/N/15 © UCLES 2015 Scenario 1 Questions 1, 2, 3 and 4 The Queen Elizabeth Hospital uses computers to help run its intensive care unit. Nurses are still required to take some readings relating to the condition of the patients. The computer will alert a nurse if readings reach dangerous levels. The hospital also uses computers to store and retrieve confidential records of all patients. This database needs to be accessed at any time of day. When data is analysed for the purpose of producing statistics it is usually in summarised form to protect patient confidentiality.

3 9713/12/O/N/15 © UCLES 2015 [Turn over 1 Tick the four advantages of using computers in intensive care. Advantage  Computers can monitor patients continuously. Nurses never get tired and never forget to take readings. Readings taken by nurses are more accurate than computers. Computers can measure more than one variable at any one time. When nurses take readings charts are produced automatically. Nurses are faster than computers to react to changes in a patient’s condition. A computer can monitor the condition of several patients at the same time leaving nurses free to do other tasks. Computers do not cost any money. A computer can only monitor one condition at a time. The use of computers to take readings reduces the chances of nurses being exposed to contagious diseases. [4] 2 Tick the four statements referring to the use of computers in intensive care which are true. Advantage  Sensors store the pre-set value. Sensors feed back data to the computer. If the patient’s blood pressure is too high the sensor sends the reading to the computer. The sensor readings are converted from digital to analogue so the computer can process them. The computer compares any data fed back by a sensor to a pre-set value. The computer is unable to produce charts showing the patient’s progress. Sensors are used to monitor a patient’s physical variables such as blood pressure, pulse rate and body temperature. The computer cannot take readings without the nurse supervising it. If any data is outside the pre-set range the computer sounds an alarm. The process is not continuous. [4]

4 9713/12/O/N/15 © UCLES 2015 3 Explain why batch processing would not be used to warn the nurses about a patient’s condition worsening. … … … … … … … … [3] 4 Name and describe two methods by which patient information could be summarised to help keep patient data confidential. 1 … … … 2 … … … [4]

5 9713/12/O/N/15 © UCLES 2015 [Turn over Scenario 2 Questions 5 and 6 Paula Richards is employed by a company to visit and inspect its stores. She spends most of her time travelling. Paula produces her reports using her laptop computer. She also has a smartphone which she uses for other aspects of her work. Some of the stores she visits are quite large and the management teams have equipment which allows them to video conference with Paula when she returns to head office to discuss her report.

6 9713/12/O/N/15 © UCLES 2015 5 Using aspects of the scenario, describe four different uses she could make of her smartphone to help her in her work. 1 … … 2 … … 3 … … 4 … … [4] 6 Describe five steps involved in setting up a video conference. 1 … … 2 … … 3 … … 4 … … 5 … … [5]

7 9713/12/O/N/15 © UCLES 2015 [Turn over Scenario 3 Questions 7, 8, 9, 10 and 11 First Call Fashions is a very large mail order catalogue company which sells a variety of clothes in the UK. Stella, the owner, has decided to computerise the company operations. She has employed Rafael, a systems analyst, to supervise the process. Rafael will analyse the current system. He will need to establish the inputs and outputs of the system. As part of the design stage he will need to design a screen input form to input the details of all the clothes. He will need to produce user documentation for the system. User documentation often gives guidance on how to use the system such as: • How to load software / run software / install software • How to save a file • How to search • How to sort • How to print • How to add records • How to delete/edit records When the system is fully developed he will need to evaluate it. Stella is going to open a call centre so that customers can phone in for help with their orders. She is considering whether to open it in the UK or overseas.

8 9713/12/O/N/15 © UCLES 2015 7 Rafael wants to establish the inputs and outputs of the current system. Describe three items he will identify as a result of examining documents. 1 … … 2 … … 3 … … [3]

9 9713/12/O/N/15 © UCLES 2015 [Turn over 8 (a) Apart from navigation aids, describe five features of a well-designed screen-based data input form. 1 … … 2 … … 3 … … 4 … … 5 … … [5] (b) Describe four advantages of using a screen form rather than a paper-based form to collect the data. 1 … … 2 … … 3 … … 4 … … [4]

10 9713/12/O/N/15 © UCLES 2015 9 (a) Apart from those uses listed in the scenario, describe four other items which would be contained in the user documentation, including the reason for their inclusion. 1 … … 2 … … 3 … … 4 … … [4] (b) Describe three drawbacks of Rafael not providing technical documentation. 1 … … 2 … … 3 … … [3]

11 9713/12/O/N/15 © UCLES 2015 [Turn over 10 Describe in detail, three methods of obtaining feedback from users of the new system and for each one give a different drawback of the method. Method 1 … … Drawback 1 … … Method 2 … … Drawback 2 … … Method 3 … … Drawback 3 … … [6] 11 (a) Give three advantages of using overseas call centres from the company’s point of view. 1 … … 2 … … 3 … … [3] (b) Give three advantages of using UK call centres from the point of view of the customer. 1 … … 2 … … 3 … … [3]

12 9713/12/O/N/15 © UCLES 2015 Scenario 4 Question 12 Joan is a manager of a department in an examination board. She wants to introduce a multimedia ICT qualification. Eventually, she will send multimedia files by emails to the schools taking the qualification. She also uses the internet to search for resource materials for the qualification but sometimes cannot obtain the required information.

13 9713/12/O/N/15 © UCLES 2015 [Turn over 12 (a) Describe what Joan has to do to prepare an email in order to send a very large attachment. … … … … … … [3] (b) A school receives the email but cannot open the attachment. Give four reasons why this may happen. 1 … … 2 … … 3 … … 4 … … [4] (c) Describe, including the use of Boolean operands, five different ways Joan could better target her searches when using the internet. 1 … … 2 … … 3 … … 4 … … 5 … … [5]

14 9713/12/O/N/15 © UCLES 2015 Scenario 5 Question 13 Hightown Bank, New York, operates an online banking system. A number of customers are concerned about the security of their accounts.

15 9713/12/O/N/15 © UCLES 2015 [Turn over 13 (a) Identify the security risks which are described below: Legitimate-looking emails sent out to customers pretending to be from a bank; when the link in the email is clicked, the customer is sent to a fake website. … Malicious code put into a user’s computer or server. When the user selects the website they are sent to a fake website instead without their knowledge. … Software on a user’s computer that monitors all key presses. … Illegal access to a computer where data can be deleted, changed or used for malicious purposes. … Software that can replicate itself. Once installed on the computer, it can cause it to operate slowly or delete or corrupt files. … Small file installed on a user’s computer after visiting a website. This allows user preferences to be remembered each time they visit the website. … [6] (b) This message is sent from a computer “ICT affects all aspects of our lives”. It is converted so that when it arrives at another computer it is seen as “RXG zuuvxgh zoo zhkvxgh lu lfi orevh”. (i) State the name given to this process of conversion. … [1] (ii) Describe how it is used as a form of security. … … … … [2]

16 9713/12/O/N/15 © UCLES 2015 (c) Describe, in detail, four other safeguards that the bank could use to protect customer account information. 1 … … … 2 … … … 3 … … … 4 … … … [4] 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 October/November 2015 series 9713 APPLIED INFORMATION AND COMMUNICATION TECHNOLOGY 9713/12 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 October/November 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 – October/November 2015 9713 12 © Cambridge International Examinations 2015 1 Computers can monitor patients continuously.
Nurses never get tired and never forget to take readings. Readings taken by nurses are more accurate than computers. Computers can measure more than one variable at any one time.
When nurses take readings charts are produced automatically. Nurses are faster than computers to react to changes in a patient’s condition. A computer can monitor the condition of several patients at the same time leaving nurses free to do other tasks.
Computers do not cost any money. A computer can only monitor one condition at a time. The use of computers to take readings reduces the chances of nurses being exposed to contagious diseases.
[4] 2 Sensors store the pre-set value. Sensors feed back data to the computer.
If the patient’s blood pressure is too high the sensor sends the reading to the computer. The sensor readings are converted from digital to analogue so the computer can process them. The computer compares any data fed back by a sensor to a pre-set value.
The computer is unable to produce charts showing the patient’s progress. Sensors are used to monitor a patient’s physical variables such as blood pressure, pulse rate and body temperature.
The computer cannot take readings without the nurse supervising it. If any data is outside the pre-set range the computer sounds an alarm.
The process is not continuous. [4]

Page 3 Mark Scheme Syllabus Paper Cambridge International AS/A Level – October/November 2015 9713 12 © Cambridge International Examinations 2015 3 Three from: Batch processing is the processing of transactions/data in sequence but monitoring is real time Data is collected in batches and then run altogether but data needs to be collected continuously Batch processing is only suitable for applications where results of processing is not time critical but monitoring is time critical Warning to nurses would have to be given without any delay [3] 4 Anonymising information [1] Individual records are summarised without mentioning the person by name [1] Aggregating information [1] Personal details of individuals are combined to provide summarised information without naming those individuals. [1] 5 Four from: Organise appointments with stores Send emails to stores/company Store contact details of store managers Send/receive texts to keep in contact with the office/manager Phone to contact stores/management teams/head office Take photos of stores/management teams [4] 6 Five from: Agree a date and time Send a reminder shortly before start …including access to password/PIN Ensure webcam, microphone, speakers are ready Carry out tests on microphone and speakers/headphones Adjust webcam so participants can be seen Log on to the system/internet Ensure video conferencing software/internet connection is running properly/installed Create room(s)/environment Enter virtual room [5] 7 Three from: Identify the sources of input data Identify the volume of input data Identify the data collection methods Identify the input documents currently in use Identify the output documents currently in use Identify the computer procedures necessary to achieve the current output [3]

Page 4 Mark Scheme Syllabus Paper Cambridge International AS/A Level – October/November 2015 9713 12 © Cambridge International Examinations 2015 8 (a) Five from: Drop down menus Submit/Save button Exit button Adequate space for field contents Fonts/font size should be easy to read Instructions how to complete form/help button Clearly labelled field names Fields spaced out/group relevant fields together Sensible colour scheme Use of tick boxes/radio buttons [5] (b) Four from: Easier to correct Easier to duplicate data when records contain the same data Easier to move to a particular record for editing purposes Easier to read/clearer data in free text fields Built in validation rules to prevent missing data in fields/making sure data is reasonable/prevent errors [4] 9 (a) Four from: The purpose of the system to give an overall description of what the system does The input and output formats, so that you know how to enter data and know what the output will look like The hardware and software needed to run the system so that the user doesn’t use the wrong hardware/software Examples of sample runs of the system so that the user can tell if they are using the system in the correct way. Troubleshooting guide/a list of Frequently Asked Questions to know what to do when errors occur [4] (b) Three from: The systems analyst would not have a detailed overview of the whole system It would be difficult for programmers/systems analyst to amend the system to eliminate errors Programmers would have difficulty fully understanding the program code that has been used It would be difficult to develop further the system or upgrade it [3]

Page 5 Mark Scheme Syllabus Paper Cambridge International AS/A Level – October/November 2015 9713 12 © Cambridge International Examinations 2015 10 Method: Could observe users performing set tasks and record their progress using video recording/get an user to perform a task and measure the time it takes them to carry out the task [1] Drawback: Description of the Hawthorne effect [1] Method: Interview users to gather their responses about what they thought of the system and how easy it was to use [1] Drawback: Users have to be available at the time the analyst wants to interview them/ time consuming as it may take a long time to interview all the users/may get answers which the user thinks the analyst wants to hear [1] Method: Hand out questionnaires to users to ask them about their thoughts on the new system with regard to how easy they found it to use [1] Drawback: They may give answers which are exaggerated as they are anonymous/question cannot be changed once they are typed up/follow up questions cannot be asked [1] 11 (a) Three from: Phone operators will be paid less Buildings needed to house call centres will be cheaper to buy/rent Call centre opening during normal hours in some countries would be unsociable hours in UK leading to a lower wage bill [3] (b) Three from: The operator will be able to understand most UK dialects The customer will usually be able to understand operator’s accent Operators should not have difficulty with UK culture Operators may not have to stick to script/may be able to answer out of the ordinary questions [3] 12 (a) Three from: Type in the address of the school correctly Enter a suitable subject line related to the message Make sure the message is encrypted Compress the file …using a suitable format/using suitable compression software [3] (b) Four from: Anti-virus software will quarantine the attachment so that you cannot open it File could be corrupted in transmission Might not have the software needed to open it Might not have the software required to decompress it The file was not attached Might not have the password required to decompress it [4]

Page 6 Mark Scheme Syllabus Paper Cambridge International AS/A Level – October/November 2015 9713 12 © Cambridge International Examinations 2015 (c) Five from: Use AND operator so that more than one condition must be met which will reduce the number of hits Use OR operator so that only one of at least two conditions needs to be met which will increase the number of hits Use NOT operator so that items failing to meet a condition are removed to exclude unwanted results Use quotes to limit the items to those that match the condition exactly which will reduce the number of hits Use wild cards so that any one of a number of matching items will result which will increase the number of hits Use a different type of search engine so that different results may be obtained [5] 13 (a) Phishing [1] Pharming [1] Spyware [1] Hacking [1] Viruses [1] Cookie [1] (b) (i) Encryption [1] (ii) Two from: Causes data to be scrambled/encoded Requires an encryption key/software to encrypt Requires a decryption key/encryption software to decrypt Results in data which is not understandable/readable Protects sensitive data …from being understood if it falls in to the wrong hands [2] (c) Four from: Detailed description of use of passwords and user IDs Detailed description of SSL or TLS Description of use of drop down menus to prevent access by keyloggers Detailed description of anti – spyware software Detailed description of firewall – hardware – or software-based, that controls incoming and outgoing network traffic based on a set of rules [4] [Total:80]