A2 ICT Info 3

Info 3 exam revision



Systems to revise:

What is a Management Information System?

What is a Transaction Processing System?

What is a Customer Relationship Management System?

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System Answers

Management Information System: This is a system inputs data from internal and external sources, processes it to provide info to aid effective decision making. An example of this within reality would be the stock control case study, an example within Mots would be the data with pickup times on it so they could use this to decide how to take advantage of earning more money. i.e double time after a certain time on the busiest night.

Transaction Processing System: This system carries out day to day tasks within most organisations at an operational level. (Bottom level) A case study example would be a payroll system within a company. The inputs would be the employee Id and hours worked, processes would be looking up other details they may need to refer to and the outputs would be the tax certificate given to employees.

Customer Relationship Management System: This is a system that basically keeps track of your dealings with the company. A MOTS example will be it may have a record of all your previously logged phone calls, so they can track how often you book and offer you special offers. An external example would be if you order shopping online from a supermarket, they tend to log your last order.

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Management and Strategies

What is an ICT Strategy?

What factors influence the management team when creating an ICT strategy?

What factors would make up a Corporate ICT Strategy?

What is the difference between de jure and de facto standards?

Can you remember what a Legacy system is?

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Strategy answers.

An effective organisation will have an ICT strategy so that they can plan for developing their ICT systems over a period of time.

Factors that influence include: Business Goals, Available Finance, Legacy Systems, Assets over time, Geographical factors and Legislations. 

Corporate ICT strategies are made up of: Keeping Pace with Developments, People, Info management and Standards.

De jure standards are standards that are published by standard organisations and are formally recognised.  De facto standards are standards that have just come about because people use them within ICT. i.e QWERTY keyboard.

A legacy system are existing ICT systems that are in use within an organisation. Some may be capable of being upgraded and some still have old technology that is used as it is stiil of use to the company.

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Developing ICT systems;

Name the 6 factors that will make a development a success.

Name the stages of the System Development Life Cycle, and briefly say what happens at each. Think of the keywords you could include.

Define volume and integrated testing. 

What is the difference between alpha and beta testing?

What is the Linear development methodology, and what is an example?

Define what the iretative methodology involves.

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Development Answers

The 6 factors that make a system a success are:

Good teamwork, Professional standards, management involvement, end user involvement, realistic expectations.

Stages of the SDLC: Analysis, design ,Construction, Testing, Installation, Review and Maintenance. Prompt for key terms.

Volume testing is where you test how much the data the system newly built can be hold and ultimately whether it can hold what is required. Integrated testing is where you run the system and go through each stage.Alpha testing is done to meet the requirements of the development team, it is the main stage of testing within an org and finds the big problems within a system. Beta testing is done by a public audience and will pick up issues such as compatibility and involving software and hardware. It allows testing for a bigger number of users.

The Linear development methodology is where you go through each stage of the SDLC, once the previous one is completed. An example would be the waterfall model. Iretative method is where you can't move through the stages of the SDLC until the client is happy with the previous one.

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Policies and Legislation

Name the 8 principles of the Data Protection Act.

What are the levels of the Computer Misuse Act?

State how the Health and Safety Act is implemented in relation to ICT systems.

What factors have to be included in a security policy?

Why is an acceptable use policy needed for organisations?

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Policies answers

8 principles of the DPA mean that data must be:

Fairly and lawfully obtained and processed, Up to date and accurate, Not kept for longer than necessary, Processed in accordance with the data subjects rights, Limited to the purpose intended, Adequate, relevant and not excessive, Not transferred to countries without adequate protection, and Securely kept.

Levels of the Computer Misuse Act:

S1- Unauthorised access to computer material (Basic Hacking)  S2-Unauthorised access to intent to commit further offences, S3 Unauthorised modification of computer material.

Health and Safety Act in relation: Ergonomics, training, health issues.

Factors that have to be included in a security policy: Internal and external threats to the company, methods of enforcing the policy, why does the company need the policy, what laws have to be complied with, the aims of the policy and what info will the policy contain. An acceptable use policy should be used to let the employees know what can and cannot be done whilst using the workstation.

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Training and Support

Name and describe three methods of training that can be used by a organisation.

Name three methods of support that can be used by an organisation.

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Training and support answers.

Three methods of training that can be used are:

Cascade: This is where one person is sent to learn a skill and then that person teaches another person said skill etc

Training manuals: these are books and magazines that can be read to give the info users need to operate the system. They are made by the developer normally or sometimes over the internet. An example would be the 'for dummies' series.

Courses: They are used to improve the skill levels of employees, by sending them to specific courses to learn specific skills.

Methods for support are:

Email Support, Callout support, Discussion forums, User Guides, FAQs, Paperclip software.

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Very Nice

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