To answer this question, you need to understand the concept of impact analysis. Impact analysis is the process of identifying the potential effects or consequences of a change in a system. It helps in determining the areas or components that may be affected by the change and allows for better decision making.
Let's go through each option to understand why it is correct or incorrect:
Option A) How much regression testing should be done - This option is correct because impact analysis helps in assessing the impact of a change on the system and its components. It helps in determining which parts of the system need regression testing to ensure that the changes have not introduced any unintended side effects.
Option B) Exit Criteria - This option is incorrect. Exit criteria are predefined conditions or requirements that must be met before a testing phase can be considered complete. While impact analysis may inform the exit criteria, it is not directly related to deciding exit criteria.
Option C) How many more test cases need to be written - This option is incorrect. Impact analysis helps in identifying the areas affected by a change, but it does not directly determine the number of test cases that need to be written. Test case creation is based on the requirements and functionality of the system, not just the impact of a change.
Option D) Different Tools to perform Regression Testing - This option is incorrect. Impact analysis focuses on assessing the impact of changes on the system, not on the tools used for regression testing.
The correct answer is A) How much regression testing should be done. This option is correct because impact analysis helps in determining the extent of regression testing needed to ensure that the changes have not introduced any unintended side effects.