Question No. 1: Briefly answer the following short questions. Each answer should not exceed 5-6 lines. [Marks: 3 X 5 = 15] Part I: Software Requirement Specification (SRS) is a work product of Requirement Engineering. While developing SRS document of any system, we have to specify Product Perspective. What do we specify in the Product Perspective section of SRS, describe it briefly? Part II: The relative costs to find and repair an error or defect increase dramatically as we go from prevention to detection to internal failure to external failure costs. Explain why, with the help of graph. Part III: Differentiate between Driver and Stub with help of appropriate example and diagram? Part IV: Software testing usually performed either by Developer or Independent Tester. What is difference between their approaches of testing? Part V: In order to formally test the functionalities of a system, test-cases are designed, you are required to design a test-case to test the functionality of addition function of a calculator.