MU Information Technology (Semester 7)
S/W Testing & Quality Assurance
December 2013
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Explain difference between Validation and Varification.
8 M
1 (b) Explain difference between failure, error and fault.
6 M
1 (c) Explain the concept of Mutation testing. What are the assumptions made in Mutation testing?
6 M

2 (a) What are the limitations of control-flow based testing?
5 M
2 (b) Compare CFG and DFG
7 M
2 (c) What is data flow anomaly? Explain why the presense of data flow anomaly does not imply that program execution will produce incorrect results.
8 M

3 (a) Describe the circumstances under which you would apply white box testing, black box testing, or both the techniques to evaluate COTs components.
10 M
3 (b) Why should integration testing be performed? What types of error can this testing will reveal? What is the difference between Unit testing and Integration testing?
10 M

4 (a) What are zero day attacks? Discuss it's significance with respect to security testing.
6 M
4 (b) For each of the following situation justify whether it is hazard or mishap :-
(i) Water in the swimming pool becomes electrified.
(ii) A car stops abruptly.
(iii) A long distance telephone company suffers an outage.
(iv) A nuclear weapons is destroyed in an unplanned manner.
(v) A room fills with carbon di-oxide.
10 M
4 (c) Explain clearly the difference between Load testing and Stress testing.
4 M

5 (a) What are the advantages and disadvantages of random testing?
6 M
5 (b) What is test oracle? What are the differences between a parametric oracle and statistical oracle?
8 M
5 (c) Discuss the similarity between decision table and category partition based testing methodology.
6 M

6 (a) What are the essential items a system test plan should include?
10 M
6 (b) What are the components of test automation infrastructure?
10 M

Write short notes on (any four) :-
7 (a) Metrics for monitoring test execution
5 M
7 (b) Difference between UAT and BAT
5 M
7 (c) Importance of DOS attack in Acceptance Testing
5 M
7 (d) Five different views of Software quality.
5 M
7 (e) McCall's quality factors and quality critical.
5 M



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