9626_w17_qp_32 - revisedeck

9626_w17_qp_32

A paper of Information Technology, 9626

Questions:

12

Year:

2017

Paper:

3

Variant:

2

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1

A company pays its workers weekly. The payroll department collects the data about the workers and stores it in a transaction file. At the end of the week, the transaction file is used to update the master file. Draw a system flowchart which shows how the transaction file and master file are used to produce the payslips for the workers.

4. Algorithms and flowcharts → 4.2. Flowcharts

16. System life cycle → 16.3. Design

Open

2

Virtual reality and augmented reality are technologies used in medicine. Explain the difference between virtual reality and augmented reality.

13. New and emerging technologies → 13.1. New and emerging technologies

10. Database and file concepts → 10.1. Creating a database

Open

3

An artist has sketched some of the shapes to use in a cartoon image of a snail. The pre-drawn shapes are shown in Fig. 1. Shape 1 Shape 2 Shape 3 Shape 4 Fig. 1 The final image is then composed and completed using image-editing tools on a computer. It is shown in Fig. 2. Cartoon Snail Fig. 2 Explain, in detail, how you would use image-editing tools to create the final image from the components.

19. Graphics creation → 19.2. Vector graphics

Open

4

A new online supermarket will have a very large amount of data about its customers, products and services that has to be kept safe. Complete back-ups of all its data are to be created at regular intervals. Jaswinder, the IT manager, is considering the options of using tape-based systems, hard disk-based systems or back-ups to the ‘cloud’ for storing the back-ups. Evaluate the three options for storing the back-ups.

14. Communications technology → 14.4. Cloud computing

10. Database and file concepts → 10.4. File and data management

14. Communications technology → 14.10. Disaster recovery management

Open

5

A software developer has decided to use a conventional ‘waterfall’ method of development to produce a new game application. Describe the stages of the ‘waterfall’ method that should be followed. Discuss the benefits and drawbacks to the developer of using the ‘waterfall’ method for developing the game application.

16. System life cycle → 16.8. Methods of software development

16. System life cycle → 16.5. Implementation

Open

6

Audio files can be digitised with different bit rates. The bit rate of an audio file can appear to affect the quality of the sound when it is listened to. Explain how you can affect the perceived quality of the sound stored in the audio file by changing the bit rate.

11. Video and audio editing → 11.2. Audio editing

11. Video and audio editing → 11.1. Video editing

Open

7

A new operating system for smartphones has been developed and is now ready for testing to begin. Discuss the benefits and drawbacks of white box testing.

16. System life cycle → 16.4. Development and testing

2. Hardware and software → 2.2. System software

Open

8

A data protection act can contain principles that create rights for those people who have their data stored and processed by companies. Describe the rights that could be created by a data protection act. Data controllers are appointed by companies to safeguard the rights of individuals whose data is stored. Describe two criminal offences that may be committed by data controllers if they fail to abide by the principles of a data protection act.

5. eSecurity → 5.1. Personal data

Open

9

WiFi is often used to connect devices to the internet. In some buildings, WiFi signals may be degraded so that data transfer appears to be ‘slow’. Explain how you could try to ensure that the WiFi system suffers minimal signal degradation.

14. Communications technology → 14.7. Wireless technology

14. Communications technology → 14.5. Data transmission across networks

Open

10

A new software application has been developed. A programmer has been brought in to make further developments. This programmer will need documentation specific to her needs. Describe, giving reasons, the elements of the documentation that she will need.

16. System life cycle → 16.6. Documentation

Open

11

A shop is open between 12 noon and 10 pm. While the shop is closed in the morning, a message saying “Sorry, we are closed” is displayed. After the shop has closed in the evening a message saying “Please try again tomorrow” is displayed. At all other times, a message saying, “Hello, we are open now” is displayed. JavaScript code can be used to alter web pages in real time. Complete the code in the function below that will allow a user to find out if the shop is open or closed. function OpenTimesFunction() { var welcome; var timenow = new Date().getHours(); document.getElementById(“open”).innerHTML = welcome; //This line displays the result of the code }

21. Programming for the web → 21.1. Programming for the web

Open

12

An animator is producing a digital cartoon showing a dancer in action on a beach. She has produced four frames of her cartoon and digitised them. Explain how you would create the illusion of movement between frames 1 and 4.

20. Animation → 20.1. Animation

Open