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Question 370
A service owner requests integration tests for an order API. The test suite runs only locally and nobody knows its CI status. Which action is the most appropriate response to this situation?
- Reset or isolate the test data before each scenario.
- Assert the rollback or compensation behavior across service boundaries.
- Use approved test doubles or a sanctioned sandbox endpoint.
- Integrate the tests into the supported CI workflow and observe results.
Explanation
Correct Answer
D:Repeatable automation makes integration failures visible to reviewers.
Incorrect Answers
A:Test isolation prevents order-dependent failures. This addresses a different situation: The test starts with leftover records from earlier runs.
B:Integration correctness includes transactional failure handling. This addresses a different situation: A failed payment should not leave an order in a paid state.
C:External production dependencies can make test suites slow, costly, and unsafe. This addresses a different situation: A generated test relies on a paid external API endpoint during CI.
Question 371
A maintainer is refactoring a large legacy service with Copilot. A method is over 400 lines but its externally observed behavior must stay unchanged. Which response best addresses the stated risk or requirement?
- Trace asynchronous and indirect callers before deletion.
- Add state-isolation tests and remove the unintended side effect.
- Benchmark representative workload sizes before accepting the refactor.
- Extract cohesive helpers while preserving verified input/output behavior.
Explanation
Correct Answer
D:Refactoring aims to improve structure without changing specified semantics.
Incorrect Answers
A:Call graphs may include runtime paths not visible from a local function. This addresses a different situation: The model removes a supposedly unused branch invoked by a background worker.
B:Refactoring should not introduce new shared-state coupling. This addresses a different situation: An extracted helper now mutates a shared global object unexpectedly.
C:Structural cleanliness does not guarantee preserved performance. This addresses a different situation: Tests pass on short strings but performance regresses on large payloads.
Question 372
A maintainer is refactoring a large legacy service with Copilot. The AI rewrites public exceptions into different error types. What is the most defensible next step under responsible development practices?
- Preserve the documented exception contract or explicitly approve the breaking change.
- Benchmark representative workload sizes before accepting the refactor.
- Trace asynchronous and indirect callers before deletion.
- Extract cohesive helpers while preserving verified input/output behavior.
Explanation
Correct Answer
A:Error behavior can be a public API compatibility requirement.
Incorrect Answers
B:Structural cleanliness does not guarantee preserved performance. This addresses a different situation: Tests pass on short strings but performance regresses on large payloads.
C:Call graphs may include runtime paths not visible from a local function. This addresses a different situation: The model removes a supposedly unused branch invoked by a background worker.
D:Refactoring aims to improve structure without changing specified semantics. This addresses a different situation: A method is over 400 lines but its externally observed behavior must stay unchanged.
Question 373
A maintainer is refactoring a large legacy service with Copilot. An extracted helper now mutates a shared global object unexpectedly. Which recommendation directly resolves this issue?
- Extract cohesive helpers while preserving verified input/output behavior.
- Preserve the documented exception contract or explicitly approve the breaking change.
- Add state-isolation tests and remove the unintended side effect.
- Benchmark representative workload sizes before accepting the refactor.
Explanation
Correct Answer
C:Refactoring should not introduce new shared-state coupling.
Incorrect Answers
A:Refactoring aims to improve structure without changing specified semantics. This addresses a different situation: A method is over 400 lines but its externally observed behavior must stay unchanged.
B:Error behavior can be a public API compatibility requirement. This addresses a different situation: The AI rewrites public exceptions into different error types.
D:Structural cleanliness does not guarantee preserved performance. This addresses a different situation: Tests pass on short strings but performance regresses on large payloads.
Question 374
A maintainer is refactoring a large legacy service with Copilot. The model removes a supposedly unused branch invoked by a background worker. Which action is the most appropriate response to this situation?
- Preserve the documented exception contract or explicitly approve the breaking change.
- Extract cohesive helpers while preserving verified input/output behavior.
- Add state-isolation tests and remove the unintended side effect.
- Trace asynchronous and indirect callers before deletion.
Explanation
Correct Answer
D:Call graphs may include runtime paths not visible from a local function.
Incorrect Answers
A:Error behavior can be a public API compatibility requirement. This addresses a different situation: The AI rewrites public exceptions into different error types.
B:Refactoring aims to improve structure without changing specified semantics. This addresses a different situation: A method is over 400 lines but its externally observed behavior must stay unchanged.
C:Refactoring should not introduce new shared-state coupling. This addresses a different situation: An extracted helper now mutates a shared global object unexpectedly.
Question 375
A maintainer is refactoring a large legacy service with Copilot. Tests pass on short strings but performance regresses on large payloads. What should the developer do before accepting the proposed result?
- Add state-isolation tests and remove the unintended side effect.
- Preserve the documented exception contract or explicitly approve the breaking change.
- Benchmark representative workload sizes before accepting the refactor.
- Trace asynchronous and indirect callers before deletion.
Explanation
Correct Answer
C:Structural cleanliness does not guarantee preserved performance.
Incorrect Answers
A:Refactoring should not introduce new shared-state coupling. This addresses a different situation: An extracted helper now mutates a shared global object unexpectedly.
B:Error behavior can be a public API compatibility requirement. This addresses a different situation: The AI rewrites public exceptions into different error types.
D:Call graphs may include runtime paths not visible from a local function. This addresses a different situation: The model removes a supposedly unused branch invoked by a background worker.
Question 376
A developer uses Copilot to document a public SDK. A generated docstring omits a function's raised exceptions. What is the most defensible next step under responsible development practices?
- Execute documentation snippets against the supported release.
- Verify and document meaningful error conditions from implementation and tests.
- Remove environment-specific or sensitive internal paths before publication.
- Update references using current source and release notes.
Explanation
Correct Answer
B:Complete API documentation covers failure contracts as well as arguments.
Incorrect Answers
A:Runnable examples are stronger evidence than plausible prose. This addresses a different situation: A README example cannot run because it imports the wrong package.
C:Documentation should not expose confidential infrastructure. This addresses a different situation: A private internal path appears in generated public documentation.
D:Docs should reflect the active implementation version. This addresses a different situation: The documentation uses an outdated endpoint name after a migration.
Question 377
A developer uses Copilot to document a public SDK. The assistant invents an optional parameter that does not exist. Which recommendation directly resolves this issue?
- Update references using current source and release notes.
- Verify and document meaningful error conditions from implementation and tests.
- Remove environment-specific or sensitive internal paths before publication.
- Check the function signature and remove unsupported parameters.
Explanation
Correct Answer
D:Documentation must match the actual public surface.
Incorrect Answers
A:Docs should reflect the active implementation version. This addresses a different situation: The documentation uses an outdated endpoint name after a migration.
B:Complete API documentation covers failure contracts as well as arguments. This addresses a different situation: A generated docstring omits a function's raised exceptions.
C:Documentation should not expose confidential infrastructure. This addresses a different situation: A private internal path appears in generated public documentation.
Question 378
A developer uses Copilot to document a public SDK. A README example cannot run because it imports the wrong package. Which action is the most appropriate response to this situation?
- Execute documentation snippets against the supported release.
- Remove environment-specific or sensitive internal paths before publication.
- Verify and document meaningful error conditions from implementation and tests.
- Check the function signature and remove unsupported parameters.
Explanation
Correct Answer
A:Runnable examples are stronger evidence than plausible prose.
Incorrect Answers
B:Documentation should not expose confidential infrastructure. This addresses a different situation: A private internal path appears in generated public documentation.
C:Complete API documentation covers failure contracts as well as arguments. This addresses a different situation: A generated docstring omits a function's raised exceptions.
D:Documentation must match the actual public surface. This addresses a different situation: The assistant invents an optional parameter that does not exist.
Question 379
A developer uses Copilot to document a public SDK. The documentation uses an outdated endpoint name after a migration. What should the developer do before accepting the proposed result?
- Update references using current source and release notes.
- Check the function signature and remove unsupported parameters.
- Verify and document meaningful error conditions from implementation and tests.
- Execute documentation snippets against the supported release.
Explanation
Correct Answer
A:Docs should reflect the active implementation version.
Incorrect Answers
B:Documentation must match the actual public surface. This addresses a different situation: The assistant invents an optional parameter that does not exist.
C:Complete API documentation covers failure contracts as well as arguments. This addresses a different situation: A generated docstring omits a function's raised exceptions.
D:Runnable examples are stronger evidence than plausible prose. This addresses a different situation: A README example cannot run because it imports the wrong package.
Question 380
A developer uses Copilot to document a public SDK. A private internal path appears in generated public documentation. Which response best addresses the stated risk or requirement?
- Update references using current source and release notes.
- Remove environment-specific or sensitive internal paths before publication.
- Execute documentation snippets against the supported release.
- Check the function signature and remove unsupported parameters.
Explanation
Correct Answer
B:Documentation should not expose confidential infrastructure.
Incorrect Answers
A:Docs should reflect the active implementation version. This addresses a different situation: The documentation uses an outdated endpoint name after a migration.
C:Runnable examples are stronger evidence than plausible prose. This addresses a different situation: A README example cannot run because it imports the wrong package.
D:Documentation must match the actual public surface. This addresses a different situation: The assistant invents an optional parameter that does not exist.
GitHub Copilot (GH-300) Practice Tests
