NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
OCTOBER 2019 EXAMINATION

COURSE CODE: CIT703
COURSE TITLE: INFORMATION TECHNOLOGY AND SOFTWARE DEVELOPMENT
CREDIT: 3 UNITS
TIME ALLOWED: 2½ HOURS
INSTRUCTION: ANSWER QUESTION ONE (1) AND ANY OTHER FOUR (4) QUESTIONS

1a. State and justify the first (4) tasks to be completed during the Initiation stage in software acquisition. (2marks)
1b. Outline the software life cycle model. (2 marks)
1c. What do you understand by UML (2 marks)
1d. Define Database Management System (DBMS) (4 marks)
1e. Demonstrate the Top-Down Approach in data flow diagrams. (2 marks)
1f. Summarise what you understand by Extreme Programming? (4 marks)
1g. Justify the most important steps of the V-model of software development. (3 marks)
1h. Aalyse the software development activities. (3 marks)
[22 marks]

2a. Give a detailed explanation of the software development process. (8marks)
2b. Outline four (4) key goals of the software development process. (4 marks)
[12 marks]

3a. Analyse the database model. (4 marks)
3b. List any four (4) database model you know. (4 marks)
3c. With the aid of a diagram, explain the following:
i. Flat Model and (2 marks)
ii. Hierarchical model. (2 marks)
[12 marks]

4a. Categorise Physical Resources in data-flow diagrams and their usefulness. (6 marks)
4b. Provide a step by step account of how you can draw the data-flow diagraming for finding a book for research in a Resource Centre. (6 marks)
5b. Provide four (4) ways in which Cardinality can be expressed. (4 marks)
5c. For binary relationship sets between entity sets A and B, what are the mapping cardinalities? (8 marks)

6a. Extensively discuss requirement engineering, within the context of software (4 marks)
6b. List four (4) categories of requirement engineering. (4 marks)
6c. Justify the factors in requirements engineering (4 marks)