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Dbit 124/Dcis 104: System Analysis And Design Question Paper

Dbit 124/Dcis 104: System Analysis And Design

Course:Computer Science And Business Information

Institution: Kenya Methodist University question papers

Exam Year:2012

KENYA METHODIST UNIVERSITY
END OF 2''ND ''TRIMESTER 2012 (DAY) EXAMINATIONS
FACULTY : COMPUTING AND INFORMATICS
DEPARTMENT : COMPUTER SCIENCE AND BUSINESS INFORMATION
UNIT CODE : DBIT 124/DCIS 104
UNIT TITLE : SYSTEMS ANALYSIS AND DESIGN
TIME : 2 HOURS

Instructions:
Answer question one and any other two questions.
Question One
Define the following terms:
System
Information system
Modularity
(6mks)
Give at least four reasons why an organization conducts systems analysis.
(4mks)
System analysts are the key individuals in the systems development process, describe their three roles.
(6mks)
Briefly explain five elements of computer based systems.
(10mks)
Differentiate between deterministic and probabilistic system.
(4mks)
Question Two
Using diagrammatic illustration, explain the waterfall model showing its main features.
(8mks)
Despite a number of limitations of waterfall model, why is it still a popular approach to systems development?
(6mks)
Using a modern method in mind show how such a method has attempted to address the weakness of traditional methods such as waterfall. (6mks)
Question Three
Explain three factors that will affect the cost of maintenance.
(6mks)
Systems analysis involves gathering data on an existing system, analyzing the facts to identify the problems, their causes and effects and their opportunities available for improvement. Highlight some of the issues a systems analyst must determine during the analysis.
(6mks)
Explain four defects to using traditional methods/approach to system analysis and design.
(8mks)
Question Four
Define the following terms as used in systems analysis and design. (6mks)
Programmer
Algorithm
Prototype
Explain four reasons for initiating system analysis.
(8mks)
Describe any three principles of a good design that a systems designer should consider during design of information system.
(6mks)
Question Five
In addressing the weakness of the waterfall model, the iterative and incremental approach is used:
Explain the term incremental iterative development (IID)
(4mks)
Why do such methods place less emphasis on system documentation?
(8mks)
"It is important to train the users of the system delivered," comment. (8mks)

Dbit 124/Dcis 104: System Analysis And Design Question Paper

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