Explanation:
One of the major benefits of object-oriented design and development is the ability to reuse modules. The other options do not normally benefit from the object-oriented technique.

Explanation:
During requirements definition, the project team will be working with the users to define their precise objectives and functional needs. At this time, the users should be working with the team to consider and document hot the system functionality can be tested ensure it meets their stated needs. The feasibility study is too early for such detailed user involvement, and the implementation planning and postimplementation review phases are too late. An IS auditor should know at what point user testing should be planned to ensure it is most effective and efficient.

Explanation:
The bottom-up approach to software testing begins with the testing of atomic units, such as programs and modules, and works upward until a complete system testing has taken place. The advantages of using a bottom-up approach to software testing are the fact that there is no need for stubs or drivers and errors in critical modules are found earlier. The other choices in this question all refer to advantages of a top-down approach, which follows the opposite path, either in depth-first or breadth-first search order.

Explanation:
Decision trees use questionnaires to lead a user through a series of choices until a conclusion is reached. Rules refer to the expression of declarative knowledge through the use of if-then relationships. Semantic nets consist of a graph in which nodes represent physical or conceptual objects and the arcs describe the relationship between the nodes. Semantic nets resemble a dataflow diagram and make use of an inheritance mechanism to prevent duplication of data.

Explanation:
The purpose of parallel testing is to ensure that the implementation of a new system will meet user requirements. Parallel testing may show that the old system is, in fact, better than the new system, but this is not the primary reason. Unit and system are completed before parallel testing. Program interfaces with files are tested for errors during system testing.

Explanation:
Unless the data are sanitized, there is a risk of disclosing sensitive data.

Explanation:
Test data will be representative of live processing; however, it is unlikely that all transaction types or error conditions will be tested in this way.

Explanation:
DSS emphasizes flexibility in the decision making approach of users. It is aimed at solving less structured problems, combines the use of models and analytic techniques with traditional data access and retrieval functions, and supports semi structured decision making tasks.

Explanation:
Parameters that are not set correctly would be the greatest concern when implementing an application software package. The other choices, though important, are a concern of the provider, not the organization that is implementing the software itself.