System testing:

Question

System testing:

BlackTom AI · Accepted Answer

System testing evaluates the complete, integrated system to verify that all components operate together correctly and meet the specified requirements.

Relevant knowledge points and concepts:
- Unit testing: verifies individual programs or modules in isolation.
- Integration testing: checks interactions and interfaces between combined modules.
- System testing: exercises the fully integrated system to validate end-to-end behavior and that modules function together in the intended environment.
- Acceptance testing: formal validation by users or stakeholders to certify readiness for production.
- Test planning/preparation: activity that organizes and defines the tests to be performed (not the testing itself).

Step-by-step reasoning:
1. Consider each answer option and map it to standard testing terminology.
2. "Includes all the preparations for the series of tests to be performed on the system." — corresponds to test planning, not system testing. Eliminate.
3. "Provides the final certification that the system is ready to be used in a production setting." — describes acceptance testing (user/operational acceptance), not system testing. Eliminate.
4. "Tests the information requirements of the system." — this is requirements validation or specific data/requirements testing, often part of validation/acceptance activities; not the general definition of system testing. Eliminate.
5. "Tests each program in the system separately." — precisely the definition of unit testing. Eliminate.
6. "Tests the functioning of the system as a whole in order to determine if discrete modules will function together as planned." — this matches system testing: it is performed after integration and focuses on the fully integrated system to ensure modules interact correctly and the overall system meets requirements.

Why the correct answer is correct:
System testing is performed on the complete, integrated software to validate behavior as a whole. Although integration testing focuses on interfaces, system testing verifies end-to-end operation and that the discrete modules collectively produce the intended functionality—so the provided option accurately describes system testing’s purpose.

Why the other options are incorrect:
- Test preparation = test planning, not system testing.
- Final certification = acceptance testing.
- Testing information requirements = requirements validation/acceptance, narrower in scope.
- Testing each program separately = unit testing.

Conclusion: The correct answer is "tests the functioning of the system as a whole in order to determine if discrete modules will function together as planned." This matches the provided answer.

System testing: 单项选择题

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