DIT 203 DBIT 205 SYSTEM ANALYSIS AND DESIGN.

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE DIPLOMA IN
INFORMATION TECHNOLOGY
DIT 203 DBIT 205 SYSTEM ANALYSIS AND DESIGN
DATE: AUGUST, 2014 TIME: 1½HOURS
INSTRUCTIONS: Answer Any Three Questions.

QUESTION ONE
a) Discuss FIVE key components of Information System. (5 Marks)
b) Feasibility study is the second stages of SDLC and is key in understanding the
existing information system with the aim of proposing a more advanced and
efficient system. Discuss FIVE types of feasibility study. (5 Marks)
c) A system analyst requires special skills to analyze, design and manage an
information system effectively. Explain THREE main categories of skills that a
system analyst is expected to have. (6 Marks)
d) Information system development requires a very smart system analyst, it however
remains a very challenging task even for a good system analyst. State and explain
TWO technical and TWO human problems encountered by a system analyst.
(4 Marks)
QUESTION TWO
a) Giving at least TWO advantages and disadvantages, discuss Questionnaires as a
fact finding technique used during system investigations; (6 Marks)
b) System Investigation is one of the most interesting and core parts of System
Analysis and Design. The choice of method is likely to determine the quality of
data to be gathered, explain THREE different scenarios where interviews would
be the most ideal method to use during data collection. (6 Marks)
c) System implementation is a very vital stage in SDLC, confirmation about
functionality of the system takes place at this stage. Briefly describe this stage and
explain SEVEN activities undertaken at this stage. (8 Marks)
QUESTION THREE
a) JAD is a process designed for developing computer based systems. Discuss the
key components of JAD and clearly state its benefits. (10 Marks)
b) During system implementation in SDLC, testing is done to ensure all errors are
captured and rectified hence preventing future malfunctioning of the system.
Discuss FIVE types of system testing. (10 Marks)
QUESTION FOUR
a) Define the following terms as used in SAD; (5 Marks)
i. System Objective
ii. Process and transformation
iii. Inputs and outputs
iv. Subsystems
v. Control
b) Structured methodology is a method discovered in 1970’s to assist system
analysts and developers in addressing problems of traditional approaches that had
failed. Discuss structured methodology and give THREE merits and demerits of
this approach. (9 Marks)
c) Discuss the components and activities that take place at the analysis stage of
SDLC. (6 Marks)
QUESTION FIVE
a) Briefly discuss the concept of system theory. (2 Marks)
b) A stakeholder is a person who stands to be affected or to benefit either directly or
indirectly from a given venture. Explain SIX possible stakeholders of a payroll
system stating their understanding or expectation of the system. (6 Marks)
c) During the process of system development, system failure can be anticipated since
there is no full guarantee of success for the anticipated information system. State
and explain EIGHT possible reasons why systems fail. (8 Marks)
d) State FOUR important reasons for system documentation (4 Marks)

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