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Bit2111:System Analysis And Design Question Paper
Bit2111:System Analysis And Design
Course:Bachelor Of Information Technology
Institution: Meru University Of Science And Technology question papers
Exam Year:2013
1
a. Elaborate on six skills required for a systems analyst. (6 Marks) b. Briefly explain the importance of systems theory concepts. (4 Marks) c. Outline six golden principles of interface design. (6 Marks) d. Anything that threatens the success of a project represents a risk to it. Describe the steps of risk management. (4 Marks) e. Briefly describe the four quadrants of the spiral model of systems development. (6 Marks) f. Give four reasons why an IT department might decide against using an integrated CASE tool for its systems development. (4 Marks)
QUESTION TWO – 20 MARKS
a. Distinguish between the following terms relating to information systems. (6 Marks) i. Functional decomposition and functional cohesion ii. Knowledge work systems and enterprise resource planning systems b. Output is the primary purpose of any system. Briefly describe any four problems associated with business information output. (4 Marks) c. Identify six factors to consider when choosing a suitable supplier for computer hardware and software. (6 Marks) d. Outline four reasons for centralizing the information systems department. (4 Marks)
2
QUESTION THREE – 20 MARKS
a. Describe the three views of the system adopted in structured systems analysis and design methodology. (6 Marks) b. Standards are important in most aspects of an information systems (IS) project, including its documentation. Briefly describe three benefits of standards in information systems development. (3 Marks) c. Entity Life Histories (ELHS), or similar constructs, attempt to provide in graphical form what can happen in the lifetime of occurrences of a given entity. Describe seven constructs of an ELH and illustrate the constructs with a simple diagram. (7 Marks) d. Outline the steps that would be used in developing a prototype. (4 Marks)
QUESTION FOUR – 20 MARKS
a. It is possible for systems analysis involved in the introduction of new or upgraded computer systems to encounter resentment and opposition from existing employees. This may take many forms from outright opposition to active hostility toward the new system during fact finding interviews. Outline four reasons for employees to react in the manner. (4 Marks) b. Expert systems perform tasks at the level of a human expert. Outline the disadvantages of expert systems. (4 Marks) c. The accuracy and quality of systems is often assessed during “Structured Walkthrough”. Explain the meaning of “Structured Walkthrough” and outline its advantages. (6 Marks) d. Briefly explain the main features of the Structured Systems Analysis and Design Methodology. (SSADM) (6 Marks)
QUESTION FIVE – 20 MARKS
a. A project has been defined to contain the following list of activities along with their required times for completion. Activity No. Activity Time (Weeks) Immediate Predecessors
1 Collect Requirements 3 - 2 Analyze Processes 2 1 3 Analyze Data 2 2 4 Design Processes 6 2 5 Design Data 3 3 6 Design Screens 2 3, 4 7 Design Reports 4 4, 5 8 Program 5 6, 7 9 Test and Document 7 7 10 Install 2 8, 9 i. Draw a network diagram for the activities (4 Marks) ii. Calculate the earliest expected completion time. (1 Mark) iii. Show the critical path (1 Mark) iv. What would happen if activity 6 were revised to take 6 weeks instead of 2 weeks? (2 Marks)
3
b. Security of information system is the protection of availability, confidentiality and integrity. Outline four ways of minimizing risks of the threats to information system security. (4 Marks) c. The terms of reference document prepared by the steering committee acts as a reference document throughout the development stages. What is its importance? (4 Marks) d. Some of the tasks involved in system implementation include training, testing and file conversion. What are the objectives of training? (4 Marks)
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