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What is the most effective means to provide assurance that a counter-off-the shelf (COTS) application will remain operational?
Changes are made and tested in the production environment.
The application was created with a high level of user involvement.
Users who request changes develop the test cases.
Changes are reviewed by the analysts who designed the application, prior to being applied.
A. Modifications that are executed and tested in the production environment pose a greater risk of unauthorized modifications. B. If the changes are reviewed by the authors of the application there are less likely to be unwanted errors or side effects caused by improper or incomplete modifications. The analysts have a better understanding of the application they developed. C. User-developed test cases may not sufficiently cover the possibility of introducing unwanted effects in functional areas that are not directly involved in the change. D. While user involvement is important during system development and acceptance testing, it does not ensure system availability after the system has gone into production.
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