Management information systems revision question and answer

CPA-Quantitative-Analysis-Section-4 BLOCK RELEASE

a) Systems walkthroughs are procedures that are commonly used as a means of quality assurance in the information systems development process.

Required:
i) Describe the composition and the roles of walk through teams.
ii) Provide a checklist of items to be examined during the walkthrough.

b) Explain what is meant a Graphical User Interface (GUI) and account for the increased design and implementation of such interfaces.
ANSWER
i) Composition and roles of walkthrough teams
Systems walkthrough refers to a situation wherethe system developed is submitted to a tem of a number of technicians including the ones who developed the system to go through it statement after the other checking for errors completeness and quality. The system is technically put through a desk checking exercise.

The walkthrough teams may be composed of:
1. The System Analyst: The analyst specifies the kind of a system to be developed and designs the program and the system as a whole so he must be included during the system testing.
2. The System Programmer(s): – He writes programs that have been specified the analyst so he is included in the team so as to detect any errors.
3. Operation managers: – He is in charge of the data preparation section and other sections of computer centre and so he is aware of all data processing requirements.
4. User department managers: – They are responsible for all shop finer operations.
5. The IS project manager checks for documentation, conformity to plan and as such is aware of the new system specifications so he can be involved to determine whether such needs are achieved.

The roles of walkthrough teams are:
1. To detect and remove any errors in the system
2. To check for the completeness of the system as per specifications
3. To guarantee the system quality
4. To ensure that the system complies with user requirements
5. To ensure the system reliability so as to ensure that the system is free from any abnormality or vulnerability.

ii) Checklist of items to be examined during the walkthrough
1. Design specifications
2. User orientation
3. Reliability
4. System quality in terms of efficiency, flexibility and economy
5. System integrity in terms of security features
6. Maintainability of the system
7. Bugs or errors to ensure that the system is free from such.
8. Consistency with the system documentation.

b) What is Graphical User Interface and why is there an increased design and implementation of such interfaces.
Graphical User Interface (GUI) refers to the interaction between end users and the computer based upon a graphical display. The are tools which are designed to enhance personal computing work thus mostly fitted on workstations or personal computers with graphics adapters able to support high resolution graphics (GUIs) are inherently visual and usually come with graphics software packages such as painting and drawing packages.

The reasons why there is increased design and implementation of such interfaces are:
1. To enhance end user computing whereusers solve their own problems without seeking assistance from experts.
2. To enhance user friendliness of the system through easy to learn interfaces.
3. To eliminate the need for technical training on use of the system.
4. To reduce the amount of effort and information required of the user to get the system complete required tasks.
5. The system should be able to adjust to different levels of expertise between users an as users grow in competence.
6. The user should be made to feel in control f what is going on.
7. To make it easy for users to start using a system.
8. The system should behave in a logical and consistent manner enabling the user to reason about what is going on and apply what has been learned.

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