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Microsoft GH-300 Practice Test 33

Question 320

A team is converting a legacy service while needing continuous availability. What task structure helps?

  1. Specify the exact failing branch and instruct preservation of unrelated code.
  2. Resolve the competing requirements with the owner before generating code.
  3. Plan incremental migration steps with rollback and validation at each cutover.
  4. Separate the issues and prioritize the security-critical API failure.

Explanation

Correct Answer

C:

Breaking changes into verifiable stages reduces deployment risk.

Incorrect Answers

A:

Focused edits reduce unintended behavior changes. What task structure helps. Breaking changes into verifiable stages reduces deployment risk.

B:

An assistant cannot infer which contradictory contract has authority. breaking changes into verifiable stages reduces deployment risk.

D:

Unrelated causes require different context and acceptance tests. Breaking changes into verifiable stages reduces deployment risk.

Question 321

A data parser must reject malformed timestamps but Copilot accepts all strings. What should be included?

  1. Supply positive and negative timestamp examples with expected errors.
  2. Supply an example where deleted rows are excluded and state the soft-delete predicate.
  3. Show representative Unicode input and the expected normalized output.
  4. Show an empty-input test that must fail with the specified error.

Explanation

Correct Answer

A:

Negative examples clarify what is forbidden, not only what succeeds.

Incorrect Answers

B:

A concrete excluded case exposes missing business filtering. What should be included. Negative examples clarify what is forbidden, not only what succeeds.

C:

Internationalization examples prevent ASCII-only assumptions. negative examples clarify what is forbidden, not only what succeeds.

D:

Counterexamples make boundary behavior explicit. negative examples clarify what is forbidden, not only what succeeds.

Question 322

An API response requires null rather than omission for a field. What prompt addition clarifies this?

  1. Supply positive and negative timestamp examples with expected errors.
  2. Show representative Unicode input and the expected normalized output.
  3. Give an exact example showing the required nullable property present.
  4. Supply an example where deleted rows are excluded and state the soft-delete predicate.

Explanation

Correct Answer

C:

Schema examples remove ambiguity in serialization expectations.

Incorrect Answers

A:

Negative examples clarify what is forbidden, not only what succeeds. Schema examples remove ambiguity in serialization expectations.

B:

Internationalization examples prevent ASCII-only assumptions. schema examples remove ambiguity in serialization expectations.

D:

A concrete excluded case exposes missing business filtering. What prompt addition clarifies this. Schema examples remove ambiguity in serialization expectations.

Question 323

Copilot writes tests that always approve empty input. What counterexample helps?

  1. Show an empty-input test that must fail with the specified error.
  2. Supply positive and negative timestamp examples with expected errors.
  3. Give an exact example showing the required nullable property present.
  4. Show representative Unicode input and the expected normalized output.

Explanation

Correct Answer

A:

Counterexamples make boundary behavior explicit.

Incorrect Answers

B:

Negative examples clarify what is forbidden, not only what succeeds. Counterexamples make boundary behavior explicit.

C:

Schema examples remove ambiguity in serialization expectations. counterexamples make boundary behavior explicit.

D:

Internationalization examples prevent ASCII-only assumptions. counterexamples make boundary behavior explicit.

Question 324

A developer asks for a SQL filter but the result includes deleted records. What should be emphasized?

  1. Show an empty-input test that must fail with the specified error.
  2. Supply an example where deleted rows are excluded and state the soft-delete predicate.
  3. Supply positive and negative timestamp examples with expected errors.
  4. Give an exact example showing the required nullable property present.

Explanation

Correct Answer

B:

A concrete excluded case exposes missing business filtering.

Incorrect Answers

A:

Counterexamples make boundary behavior explicit. What should be emphasized. A concrete excluded case exposes missing business filtering.

C:

Negative examples clarify what is forbidden, not only what succeeds. A concrete excluded case exposes missing business filtering.

D:

Schema examples remove ambiguity in serialization expectations. a concrete excluded case exposes missing business filtering.

Question 325

A parser generated from examples accepts invalid dates and mishandles accented characters. Which TWO examples improve the prompt? (Select TWO.)

  1. Provide Unicode examples with expected normalization and character preservation.
  2. Include only a single simple ASCII success input.
  3. Copy real customer passwords into test fixtures.
  4. Remove all example outputs so the assistant must infer formatting.
  5. Add invalid timestamp cases with the exact expected error behavior.

Explanation

Correct Answers

A:

Internationalized cases prevent accidental ASCII-only assumptions.

E:

Negative examples define the boundary between valid and rejected input.

Incorrect Answers

B:

A narrow happy path cannot constrain boundary behavior.

C:

Sensitive values are unnecessary for parsing tests.

D:

Missing expected results increases ambiguity.

Question 326

Copilot's first answer fails a real unit test. What is the best follow-up?

  1. Add the failing boundary case and require tests for both old and new behavior.
  2. Include the failed command, target path, and permission constraints without secrets.
  3. Include the exact failing assertion and request a minimal correction.
  4. Reassert the frozen public interface and tests that must remain passing.

Explanation

Correct Answer

C:

Feedback anchored in execution is more informative than "try again."

Incorrect Answers

A:

Iteration must guard against regression. Feedback anchored in execution is more informative than "try again.".

B:

Environmental errors require context different from algorithm bugs. What is the best follow-up. Feedback anchored in execution is more informative than "try again.".

D:

Refinement should preserve unmodified acceptance criteria. feedback anchored in execution is more informative than "try again.".

Question 327

A generated CSS layout overflows at 390px. What should the next prompt contain?

  1. Supply the viewport measurement and affected element instead of asking for general polish.
  2. Add the failing boundary case and require tests for both old and new behavior.
  3. Include the exact failing assertion and request a minimal correction.
  4. Reassert the frozen public interface and tests that must remain passing.

Explanation

Correct Answer

A:

Concrete rendering evidence enables targeted responsive fixes.

Incorrect Answers

B:

Iteration must guard against regression. Concrete rendering evidence enables targeted responsive fixes.

C:

Feedback anchored in execution is more informative than "try again.". concrete rendering evidence enables targeted responsive fixes.

D:

Refinement should preserve unmodified acceptance criteria. concrete rendering evidence enables targeted responsive fixes.

Question 328

A Copilot-generated local repository maintenance script returns EACCES while writing to a protected working-tree path. The developer wants a safer follow-up prompt. What diagnostic details should be supplied?

  1. Add the failing boundary case and require tests for both old and new behavior.
  2. Supply the viewport measurement and affected element instead of asking for general polish.
  3. Include the failed command, target path, and permission constraints without secrets.
  4. Include the exact failing assertion and request a minimal correction.

Explanation

Correct Answer

C:

Environmental errors require context different from algorithm bugs.

Incorrect Answers

A:

Iteration must guard against regression. Environmental errors require context different from algorithm bugs.

B:

Concrete rendering evidence enables targeted responsive fixes. How should the next request be phrased. Environmental errors require context different from algorithm bugs.

D:

Feedback anchored in execution is more informative than "try again.". environmental errors require context different from algorithm bugs.

Question 329

A model changes a public type unexpectedly after feedback. What should the user restate?

  1. Supply the viewport measurement and affected element instead of asking for general polish.
  2. Include the failed command, target path, and permission constraints without secrets.
  3. Include the exact failing assertion and request a minimal correction.
  4. Reassert the frozen public interface and tests that must remain passing.

Explanation

Correct Answer

D:

Refinement should preserve unmodified acceptance criteria.

Incorrect Answers

A:

Concrete rendering evidence enables targeted responsive fixes. What should the user restate. Refinement should preserve unmodified acceptance criteria.

B:

Environmental errors require context different from algorithm bugs. refinement should preserve unmodified acceptance criteria.

C:

Feedback anchored in execution is more informative than "try again.". refinement should preserve unmodified acceptance criteria.

Question 330

A generated request handler now works for one input but breaks a documented boundary. What should happen next?

  1. Supply the viewport measurement and affected element instead of asking for general polish.
  2. Include the failed command, target path, and permission constraints without secrets.
  3. Add the failing boundary case and require tests for both old and new behavior.
  4. Reassert the frozen public interface and tests that must remain passing.

Explanation

Correct Answer

C:

Iteration must guard against regression.

Incorrect Answers

A:

Concrete rendering evidence enables targeted responsive fixes. What should happen next. Iteration must guard against regression.

B:

Environmental errors require context different from algorithm bugs. iteration must guard against regression.

D:

Refinement should preserve unmodified acceptance criteria. Iteration must guard against regression.

GitHub Copilot (GH-300) Practice Tests