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1

A computer contains internal hardware. Write down the item of internal hardware from the list to match the descriptions. ROM RAM Network card Internal hard disk CD ROM Wide format printer Video card Trackerball Touch screen Sound card Stores the start-up instructions for the computer. A magnetic medium that stores applications when they are not in use. Memory where data is lost when the computer is turned off. Generates images to display on the monitor.

1. Types and components of computer systems  →  1.1. Hardware and software

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2

For each application tick the most appropriate type of computer to match the description. Smartphone (✓) Laptop (✓) Desktop (✓) A computer that is only used in one place. Must always be connected to an external power source to work. Small enough to fit into a pocket. A mobile device with a large keyboard and display. 1 15

1. Types and components of computer systems  →  1.4. Types of computer

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3

Data can be input into computers using direct data entry. Tick the most appropriate method of direct data entry for each statement. OCR (✓) OMR (✓) MICR (✓) Used to read magnetic data on cheques. Used to read car number plates. Used when entering handwritten text. Used to read multiple-choice examination responses.

2. Input and output devices  →  2.2. Direct data entry and associated devices

6. ICT applications  →  6.10. Recognition systems

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4

Circle two items which are used as output devices. Microphone Magnetic tape 3D printer Web cam Sensor Monitor [Turn over 1 15

2. Input and output devices  →  2.3. Output devices and their uses

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5

A fish farm has a computer system that constantly monitors the quality of the water in its fish ponds. The system uses sensors to carry out the monitoring. Name two sensors that could be used to monitor the quality of the water in the fish ponds. Name the device that is used to convert the data from the sensor into a form that could be read by the computer. Describe the role of the computer in monitoring the quality of the water in the fish ponds. 1 15

7. The systems life cycle  →  7.1. Analysis

1. Types and components of computer systems  →  1.1. Hardware and software

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6

Describe the following security issues. Phishing Pharming Smishing [Turn over 1 15

8. Safety and security  →  8.3. Security of data

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7

Peta is designing a new logo for his computer club. It must fit into a space 15mm square on the club’s headed note paper. The logo must look like this: He is using a graphics package and has started by producing a white 10mm square with a black border like this: Describe, in detail, how he can complete the logo. 1 15

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8

A large farm uses a robotic system to milk and feed animals. Until recently this would have been carried out by farm workers. Discuss the advantages and disadvantages of using robotics in automated farms. [Turn over 1 15

6. ICT applications  →  6.3. Computer controlled systems

6. ICT applications  →  6.2. Modelling applications

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9

A teacher is creating a web page in HTML to display on the school’s intranet. All colour codes must be in hexadecimal. It has the following style sheet attached: h1 {color: #ff0000; font-family: Times, serif; font-size: 30pt; text-align: center;} h2 {color: #0000ff; font-family: Times, Helvetica, serif; font-size: 24pt; text-align: center;} h3 {color: #00ff00; font-family: Times, Helvetica, serif; font-size: 14pt; text-align: justify;} body {background-color: #ad88e6;} table {border-color: #000000;} Having tested the web page the teacher needs to make some changes to the style sheet. Write down the CSS to: edit style h1 so that the font is Comic Sans or, if not available, Arial or, if this is not available, the browser’s default sans-serif font. font-family: add markup to the table style to set a 3 pixel wide, dashed external border. table {border-color: #000000; } edit style h3 so that the colour is set to black. h3 {color: 1 15 add markup to the start of style h2 to display the text as bold. h2 {

21. Website authoring  →  21.3. Use stylesheets

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10

Magnetic tapes are traditionally used for backing up data on large computer systems. Liu works from home and is considering either backing up her data on to magnetic tape or a pen drive. Give three reasons why she may prefer to use a pen drive. [Turn over 1 15

3. Storage devices and media  →  3.2. Storage media

3. Storage devices and media  →  3.1. Storage devices

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11

When a system has been developed, two types of documentation are produced, technical and user documentation. Explain why user documentation is needed. Explain why technical documentation is needed. Identify four components that are only found in user documentation but not found in technical documentation. 1 15 Tick three evaluation strategies that need to be carried out following implementation of the new system. Tick (✓) Observe users operating the old system. Compare the final solution with the original requirements. Design the report layout. Check user documentation to see if it is correct. Interview users to gather responses about how well the new system works. Test the system works correctly. Identify any necessary improvements that need to be made. Design error handling.

7. The systems life cycle  →  7.5. Documentation

7. The systems life cycle  →  7.6. Evaluation

7. The systems life cycle  →  7.1. Analysis

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12

There are two types of verification, visual and double data entry. Explain the differences between visual verification and double data entry. [Turn over 1 15

15. Proofing  →  15.2. Proofing techniques

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13

An organisation is planning to train all staff online rather than by video-conference. Describe what is meant by a web-conference. Explain the differences between video- and web-conferencing.

4. Networks and the effects of using them  →  4.2. Network issues and communication

10. Communication  →  10.2. Effective use of the internet

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Continuous use of computers can lead to a number of health issues. In the table there are some recommended ways to minimise specific health issues. For each way, identify the most appropriate health issue it is trying to minimise. Identified health issues must be different in each case. Health issue Ways of minimising the health issue Use ergonomic keyboards. Use fully adjustable chairs to give correct posture. Change to LCD screens from CRT screens. Have the monitor at the correct height. 1 15

5. The effects of using IT  →  5.2. Potential health problems related to the prolonged use of IT equipment

5. The effects of using IT  →  5.1. Microprocessor-controlled devices

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15

Drones are unmanned flying vehicles that are used for commercial and leisure activities. Drones are fitted with cameras to monitor situations. A river has burst its banks following prolonged heavy rainfall. Explain why drones are used to help monitor the situation.

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16

The manager of a large company wants to replace the company’s cabled LAN with a WLAN. Describe the features of a WLAN. [Turn over 1 15

4. Networks and the effects of using them  →  4.1. Networks

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17

A small company makes toys and then delivers them to shops. Throughout the day orders are received by the company from its customers. The office workers in the finance department create and store an invoice for each order. They are too busy to be disturbed from their work. Delivery drivers receive copies of the invoices which they will pass on to their customers. The drivers make a large number of deliveries per day and do not return to the office. A systems analyst will research the current system and suggest improvements to be made. For each type of employee identified above, describe the most suitable method of collecting information from them, giving a reason for your choice. Office workers Reason Delivery drivers Reason 1 15 The factory is based on one site and only has space for one production line. The company has decided to computerise its production line. It will use direct changeover as the method of implementing the new system. Explain why the company would use this method rather than other methods of implementation. [Turn over 1 15

7. The systems life cycle  →  7.1. Analysis

7. The systems life cycle  →  7.3. Development and testing

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18

As more and more people use the internet at home to carry out transactions they are at risk of downloading software that could corrupt files or copy credit card details. Discuss the effectiveness, or otherwise, of using different methods of increasing the security of a home computer.

8. Safety and security  →  8.3. Security of data

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