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SAD621S - SYSTEMS ANALYSIS AND DESIGN - 1ST OPP - NOV 2022 |
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nAm IBIA UnlVERSITY
OFSCIEnCEAno TECHnOLOGY
FACULTY OF COMPUTING AND INFORMATICS
DEPARTMENT OF INFORMATICS, JOURNALISM AND MEDIA TECHNOLOGY
QUALIFICATION : BACHELOR OF INFORMATICS
QUALIFICATION CODE: 07BAIT
COURSE: SYSTEMS ANALYSIS AND DESIGN
DATE: NOVEMBER 2022
DURATION: 2 Hours
COURSE LEVEL: NQF LEVEL6
COURSE CODE: SAD621S
SESSION: 1
MARKS: 80
EXAMINER:
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
DR EDMORE CHIKOHORA
MR GABRIEL NHINDA
MS SINTE MUTELO
MODERATOR:
Mr GEREON KOCH KAPUIRE
THIS EXAMINATION PAPER CONSISTS OF 6 PAGES
(INCLUDING THIS FRONT PAGE)
Instructions for the students
1. Attempt all questions
2. Use a separate booklet to write your answers
3. Please ensure that your handwriting is legible, neat and presentable
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Section A:
[20 marks]
1. System Study involves
A. Study of an existing system
B. Documenting the existing system
C. Identifying current deficiencies and establishing new goals
D. All of the above
E. None of the above
2. The primary tool used in structured design is a
A. Structure chart
B. Data-flow diagram
C. Program flowchart
D. Module
E. None of the above
3. In a __ one module of the new information system is activated at a time.
A. System Development Life Cycle
B. CASEtool
C. Phased Conversion
D. Successfactors
E. None of the above
4. In Prototyping
A. BASICis used
B. COBOLis used
C. 4Gls are used
D. System is documented
E. None of the above
5. The approach used in top-down analysis and design is
A. To prepare flowcharts after programming has been completed
B. To identify a top - level function and then create a hierarchy of lower level modules
and components
C. To identify the top - level functions by combining many smaller components into a
single entity
D. All of the above
E. None of the above
6. The approach used in top-down analysis and design is
A. To identify the top-level functions by combining many smaller components into a
single entity
B. To prepare flow charts after programming has been completed
C. To identify a top-level function and then create a hierarchy of lower-level modules
and components
D. All of the above
E. None of the above
7. Which of the following is not a factor in the failure of the systems development projects?
A. Size of the company
B. Inadequate user involvement
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C. Failure of systems integration
D. Continuation of a project that should have been cancelled
E. None of the above
8. Documentation is prepared
A. At every stage
B. At system design
C. At system analysis
D. At system development
E. None of the above
9. Data Definition Language (DDL)
A. Describes how data are structured in the data base
B. Specifies for the DBMS what is required; the techniques used to process data
C. Determine how data must be structured to produce the user's view
D. All of the above
E. None of the above
10. During the maintenance phase
A. System requirements are established
B. System analysis is carried out
C. Programs are tested
D. All of the above
E. None of the above
11. Problem analysis is done during
A. System design phase
B. Systems analysis phase
C. Before system test
D. All of the above
E. None of the above
12. Elapsed time, between initiating a query and receiving a response is called
A. Response time
B. Waiting time
C. Processing time
D. Turnaround time
E. None of the above
13. Which of the following appropriately explains the desirable characteristic of good system
design?
A. Modular approach
B. Proper documentation
C. Conversion
D. Long discussions
E. None of the above
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14. The feasibilities studied in preliminary investigation is (are):
A. Technical feasibility
B. Economic feasibility
C. Operational feasibility
D. All of the above
E. None of the above
15. Cost-Benefit Analysis is performed during
A. Analysis phase
B. Design phase
C. Feasibility study phase
D. Implementation phase
E. Maintenance phase
16. Which of the following strategies are adopted if information requirements are not well-
defined?
A. Rapid application development method
B. Structured analysis development method
C. Systems development life cycle method
D. Prototyping method
E. Spiral method
17. Which of the following is not a fact-finding technique?
A. Third party enquiry
B. Interview
C. Questionnaire
D. Record reviews
E. Observation
18. Which of the following statements is false with respect to a Data Dictionary
A. It is a repository of the elements in a system
B. Data dictionary and data store both are same
C. It manages detail
D. It communicates the common meanings for system elements and activities
E. It documents system features
19. The black box concept assumesthat;
A. The super system is stable
B. Black boxes are dependent or environments
C. The relationship between the inputs and output is stable
D. All of the above
E. None of the above
20. The procedure for evaluating the relative performance of different computers, is done by
the process called
A. Batch processing
B. Sequential processing
C. Bench marking
D. All of the above
E. None of the above
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Section B:
Question 1:
Explain the following terms as used OOA/D
i. Actor
ii. Attribute
iii. Build or Buy
iv. Physical design
v. Benchmark testing
vi. Adaptive maintenance
[30 marks]
(2 marks]
(2 marks]
(2 marks]
(2 marks]
(2 marks]
(2 marks]
Question 2:
In Object Oriented Analysis/Design (OOA/D) classesare used to model data. Using knowledge gained
in OOA/D answer the following:
i. Define a Class,Subclass, and Superclass
(3 marks]
ii. Provide an example of the above classes.
(6 marks]
iii. OOA/D supports different types of inheritance. Describe using example (s) any Three (3) types
of inheritance you are familiar with.
(9 marks]
Section C:
(30 marks]
Question 1:
Scenario 1 shows the credit card application process in a local bank. Carefully read the scenario and
attempt the question that follow.
Scenario 1: Applying for a credit card
• A customer fills out an application form and sends it to a bank,
• The bank completes a credit check and if the customer's credit is not acceptable, returns the
application with an explanation,
• If the application is accepted, the bank mails the customer two separate items (in two
separate envelopes):
The credit card itself
The customer's Personal Identification Number (PIN)
• When the customer has received both, he activates the card by making a phone call
Draw a Use Casediagram for Scenario 1.
(15 marks]
Note:
Your Use Casediagram should show the following information:
Names of use case and Actors
Description of purpose
Triggers
Pre-conditions, Post-conditions
Question 2:
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Table 1 shows activities and duration for an information system project. Use it to answer the
questions that follow.
Table 1: Information System Project
ACTIVITY·
t :11~.......
1 Planning
2 Coding
3 Testing
4 Review
5 Walkthrough
6 Evaluation
7 Review
PREDE(:ESSOR.DURATION "
-
5
1
6
-
6
2,3
15
2,3
7
5
5
4,6
5
i. Draw a PERTchart to represent the Information Systems Project activities
ii. Show the critical path of the Information Systems Project.
iii. Justify the selection of your critical path
[10 marks]
[3 marks]
[2 marks]
END OF EXAMINATION
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