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NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY/FEBRUARY 2013 EXAMINATION

Course Code:       CIT 851                                                Time:     3hrs

 

Course Title:       Advanced Systems Analysis and Design       Course Credit Unit:           3

                      

Instruction:          Answer any five (5) questions.

 

QUESTIONS

 

1. Give a brief description of the following:

  1. Decision Table                                                                    )
  2. E-R Model                                                                                           ) (4 marks each)
  3. Trade-off Matrix                                                                                )
  4. Data Dictionary                                                                  )
  5. Database Schema                                                                                )(Total=20marks)

 

2. Study the diagram provided below and answer the questions that follow:

 

2a. What is the most appropriate title for this Figure?                                            (2 marks)

2b. State the number of objects in use.                                                                           (2 marks)

2c. Describe the Figure, highlighting the specific roles of its components.  (16 marks)

(Total=20marks)

 

3a. A common distributed system architecture is composed of five (5) layers. List and describe these components.                                                                                       (10 marks)

3b. Provide a concise explanation of the basic features of a classic system.   (10 marks)

(Total=20marks)

 

4a. In the event that a Systems Analyst represents a group facilitator, a number of guidelines must be adhered to. List any eight (8) of these guidelines.        (16 marks)

4b. What are the components of a system design?                                                         (4 marks)                                                                                                                                                  (Total=20marks)

 

5a. Describe the concept of Modularity.                                                                       (6 marks)

 5b. State any 4 classes of coupling.                                                                                               (8 marks)

5c. Normally, it is fitting that Systems Analysts visit sites of the organisation for which a system is being developed. Give three (3) reasons for this?       (6 marks)

Total=20marks)

 

6a.List and describe any four (4) elements of a test design document.  (16 marks)

6b. In the context of systems analysis, state two (2) types of interviews              (4 marks)

Total=20marks)

 

7a.Speciy the main purpose of each of the four (4) common types of information systems.                 (16 marks)

 

7b. In the context of systems analysis, give the full meaning of the following:

  1. POS                                                                                                                                        (2 marks)
  2. TPS                                                                                                                                        (2 marks)

(Total=20marks)


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