15.High cohesion of classes____. a.increases system complexity b.makes such classes difficult to maintain c.helps to group functionality logically d.makes testing harder 16.Which of the following statements does not represent a valid type of software maintenance? a.Corrective b.Executive c.Perfective d.Adaptive 17.The <<includes>> relationship represents the situation of one use case being used by another one. It is similar to the ____relationship. a.<<extends>> b.<<invokes>> c.<<aggregates>> d.None of the above. 18.What is an important activity in the support phase of a SDLC? a.System maintenance. b.User acceptance testing.c.System installation.d.Documentation of functionality. 19.A good requirements specification report typically includes information on ____. a.scope of system analysis b.all functional and non-functional requirements c.high-level system architectured.a test plan
20.Which one of the following statements bestrepresents a key activity of software systems post- implementation review? a.Identify what went wrongb.How well original requirements were met c.Comparing expected and actual benefits d.All of the above
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