Question No: 1 Short Questions Marks (11*2=22] a. Is Unit Testing possible or even desirable in all circumstances? Provide examples to justify your answer. b. Define the following types of system testing i Stress Testing ii. Recovery Testing c. Some people argue that developers should not be involved in testing their own code but that all testing should be the responsibility of a separate team Give arguments for and against testing by the developers themselves. d Using your own words, describe the difference between verification and validation. Do both make use of test- case design methods and testing strategies? e. Who should perform the validation testthe software developer or the software user? Justify your answer. f Identify at least three reasons in favour of why functional independence is the key factor for a good software design g. Outline the fact finding or elicitation techniques? h. What is balanced DFD? i. Differentiate among basic COCOMO model, intermediate COCOMO model and complete COCOMO model. j. Explain, in the context of the models you have produced, what is meant by saying: "A good specification should be correct, consistent and complete". k Requirement engineering mainly deals with the definition phase of the system. Discuss the importance of Requirement Engineering