Question at position 20 What is a key advantage of the V-Model in testing?It focuses only on GUI testingIt eliminates the need for documentationIt supports only waterfall methodsIt aligns testing activities with corresponding development stagesClear my selection

Question

BlackTom AI · Accepted Answer

The V‑Model maps each development phase directly to a corresponding testing phase, so a primary advantage is that testing activities are planned and aligned with development stages.

1. Relevant knowledge points and concepts
- The V‑Model is a software development lifecycle model emphasizing verification and validation.  
- Each development activity on the left side (requirements, system design, architecture, module design) has a matching test activity on the right side (acceptance, system, integration, unit testing).  
- Benefits include early test planning, traceability between requirements and tests, and clearer defect detection responsibilities.

2. Step-by-step reasoning
- Requirements definition ↔ Acceptance testing: Acceptance tests are derived from requirements so acceptance criteria are defined early.  
- System design ↔ System testing: The system test plan is created when system design is finalized.  
- Architectural/integration design ↔ Integration testing: Interfaces and interactions are validated by integration tests designed alongside architecture.  
- Module/design details ↔ Unit testing: Unit tests are developed in tandem with module design.  
Because each test level corresponds directly to a development level, tests can be specified and prepared early, and coverage of requirements is traceable.

3. Intermediate steps (traceability and planning)
- Identify requirement → write acceptance test cases.  
- Identify system components → prepare system and integration test scenarios.  
- For each module → create unit tests.  
These concrete mappings are the operational steps that support the V‑Model advantage.

4. Why the correct answer is correct
Because the V‑Model explicitly aligns testing activities with corresponding development stages, it facilitates early test design, requirements-to-test traceability, and structured verification/validation, which is the key advantage highlighted.

5. Why other options are incorrect
- "It focuses only on GUI testing": False — V‑Model covers all test levels (unit to acceptance), not just GUI.  
- "It eliminates the need for documentation": False — V‑Model typically requires thorough documentation because of its structured nature.  
- "It supports only waterfall methods": Misleading — the V‑Model is a variant of waterfall-style sequential development, but stating this as an advantage is incorrect; it’s a characteristic, not a benefit.

6. Conclusion
The correct answer is: It aligns testing activities with corresponding development stages, which matches the provided answer.

Question at position 20 What is a key advantage of the V-Model in testing?It focuses only on GUI testingIt eliminates the need for documentationIt supports only waterfall methodsIt aligns testing activities with corresponding development stagesClear my selectionSingle choice

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