NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY/FEBRUARY 2018 EXAMINATION

CIT 703 – Information Technology and Software Development 

Instruction: Answer Question 1 and any other four

1a.       List out the five processes a software user will follow to procure a software. (6 marks)                  

b.            Define the following terms:( 4 marks)

i. software lifecycle model?

ii. Software Process Model?

c.         Give the full meaning of UML and define it? (4 marks)

d.         Define the following terms ( 8 marks)

            i. Database model

            ii. Database management system

            iii. Data flow diagram

            iv. Entity-Relationship Model.

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2a.       What do you understand by the term software maintenance? (3 marks)

 b.        Differentiate between Module testing and Integration testing? (6 marks)         

 c.        What is project Planning? (3 marks)

3a        List any 5 activities in the classic software lifecycle model and describe each mentioned?(5 marks)    

 b.        Differentiate between prescriptive model and descriptive model? (5 marks)

 c.        Define the following Concepts (2 marks)

i. Joint Application Development(JAD).

ii. Rapid Prototyping.

4a.          Identify and explain 5 goals of a software process. (5 marks)                                                     

b.           List four dimensions of quality and their categories according to McCall’s software quality factors. ( 4marks)   

 c.        Explain software process model? ( 3 marks)

5a.       List three parts of the UML 2.x specification.( 3 marks)                     

b.        List and explain the deficiencies of UML.( 6 marks)     

 c.        List and describe any 3 types of structural diagrams. (3 marks)

6a.       List 5 database models and describe one(1)     ( 6 marks)               

b.        List and explain three components of Database Management System ( 3marks)      

 c.        List 3 features of Database Management Systems. ( 3 marks)

7a.       What is a data flow diagram? (3 marks)                  

b.        With the aid of a diagram describe each of Yourdon’s DFD notations.(3 marks)

 c.        Outline three advantages of using a Data Flow Diagram. (6 marks)