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Microsoft GH-300 Practice Test 34

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.

Question 331

A long Copilot conversation begins referring to an outdated function signature. What should the user do?

  1. Restate the controlling decision and link or attach its source.
  2. Explicitly correct the assumption and anchor the new version in the current manifest.
  3. Provide the latest authoritative signature and identify superseded context.
  4. Keep an authoritative task brief with the resolved answers and references.

Explanation

Correct Answer

C:

Old chat history can conflict with current implementation.

Incorrect Answers

A:

Ambiguous conversational references are not reliable context. Old chat history can conflict with current implementation.

B:

Context correction is more reliable than assuming the model forgets. old chat history can conflict with current implementation.

D:

Durable requirements reduce dependence on long ephemeral histories. old chat history can conflict with current implementation.

Question 332

A team moves work into a new session. What should be carried forward?

  1. Provide the latest authoritative signature and identify superseded context.
  2. Supply a concise checkpoint listing decisions, files, constraints, and remaining tests.
  3. Restate the controlling decision and link or attach its source.
  4. Explicitly correct the assumption and anchor the new version in the current manifest.

Explanation

Correct Answer

B:

Explicit state transfer prevents recreating completed changes.

Incorrect Answers

A:

Old chat history can conflict with current implementation. What should be carried forward. Explicit state transfer prevents recreating completed changes.

C:

Ambiguous conversational references are not reliable context. Explicit state transfer prevents recreating completed changes.

D:

Context correction is more reliable than assuming the model forgets. explicit state transfer prevents recreating completed changes.

Question 333

An agent repeatedly asks questions already resolved earlier. What should the user preserve?

  1. Keep an authoritative task brief with the resolved answers and references.
  2. Explicitly correct the assumption and anchor the new version in the current manifest.
  3. Provide the latest authoritative signature and identify superseded context.
  4. Supply a concise checkpoint listing decisions, files, constraints, and remaining tests.

Explanation

Correct Answer

A:

Durable requirements reduce dependence on long ephemeral histories.

Incorrect Answers

B:

Context correction is more reliable than assuming the model forgets. durable requirements reduce dependence on long ephemeral histories.

C:

Old chat history can conflict with current implementation. What should the user preserve. Durable requirements reduce dependence on long ephemeral histories.

D:

Explicit state transfer prevents recreating completed changes. durable requirements reduce dependence on long ephemeral histories.

Question 334

A prompt says "as we agreed" but the assistant lacks the earlier thread. What is safer?

  1. Provide the latest authoritative signature and identify superseded context.
  2. Supply a concise checkpoint listing decisions, files, constraints, and remaining tests.
  3. Keep an authoritative task brief with the resolved answers and references.
  4. Restate the controlling decision and link or attach its source.

Explanation

Correct Answer

D:

Ambiguous conversational references are not reliable context.

Incorrect Answers

A:

Old chat history can conflict with current implementation. What is safer. Ambiguous conversational references are not reliable context.

B:

Explicit state transfer prevents recreating completed changes. ambiguous conversational references are not reliable context.

C:

Durable requirements reduce dependence on long ephemeral histories. Ambiguous conversational references are not reliable context.

Question 335

A prior chat contains a wrong assumption about a library version. What should a revision do?

  1. Supply a concise checkpoint listing decisions, files, constraints, and remaining tests.
  2. Explicitly correct the assumption and anchor the new version in the current manifest.
  3. Keep an authoritative task brief with the resolved answers and references.
  4. Restate the controlling decision and link or attach its source.

Explanation

Correct Answer

B:

Context correction is more reliable than assuming the model forgets.

Incorrect Answers

A:

Explicit state transfer prevents recreating completed changes. context correction is more reliable than assuming the model forgets.

C:

Durable requirements reduce dependence on long ephemeral histories. Context correction is more reliable than assuming the model forgets.

D:

Ambiguous conversational references are not reliable context. context correction is more reliable than assuming the model forgets.

Question 336

A developer asks Copilot only to produce code for a financial calculation. What additional instruction improves correctness?

  1. Request query-plan evidence and a before-after benchmark method.
  2. Reproduce the interleaving and explain which synchronization guarantee the fix adds.
  3. Identify trust boundaries, attacker-controlled inputs, and negative security cases.
  4. Request edge-case tests and independent numerical verification of the formula.

Explanation

Correct Answer

D:

Financial formulas can appear plausible while producing wrong values.

Incorrect Answers

A:

Design assertions need reproducible evidence. financial formulas can appear plausible while producing wrong values.

B:

Race analysis must account for execution order and shared state. What additional instruction improves correctness. Financial formulas can appear plausible while producing wrong values.

C:

Explicit threat assumptions expose missing controls. Financial formulas can appear plausible while producing wrong values.

Question 337

A generated search algorithm is difficult to understand. What request improves reviewability?

  1. Request edge-case tests and independent numerical verification of the formula.
  2. Request query-plan evidence and a before-after benchmark method.
  3. Reproduce the interleaving and explain which synchronization guarantee the fix adds.
  4. Ask for a concise invariant, complexity assessment, and representative tests.

Explanation

Correct Answer

D:

Reviewable reasoning aids validation without treating the explanation as proof.

Incorrect Answers

A:

Financial formulas can appear plausible while producing wrong values. reviewable reasoning aids validation without treating the explanation as proof.

B:

Design assertions need reproducible evidence. reviewable reasoning aids validation without treating the explanation as proof.

C:

Race analysis must account for execution order and shared state. What request improves reviewability. Reviewable reasoning aids validation without treating the explanation as proof.

Question 338

A security-sensitive patch lacks a threat model. What should be requested?

  1. Request edge-case tests and independent numerical verification of the formula.
  2. Reproduce the interleaving and explain which synchronization guarantee the fix adds.
  3. Identify trust boundaries, attacker-controlled inputs, and negative security cases.
  4. Ask for a concise invariant, complexity assessment, and representative tests.

Explanation

Correct Answer

C:

Explicit threat assumptions expose missing controls.

Incorrect Answers

A:

Financial formulas can appear plausible while producing wrong values. explicit threat assumptions expose missing controls.

B:

Race analysis must account for execution order and shared state. What should be requested. Explicit threat assumptions expose missing controls.

D:

Reviewable reasoning aids validation without treating the explanation as proof. Explicit threat assumptions expose missing controls.

Question 339

A database change is proposed without any operational measurement. What should the author ask for?

  1. Request query-plan evidence and a before-after benchmark method.
  2. Request edge-case tests and independent numerical verification of the formula.
  3. Ask for a concise invariant, complexity assessment, and representative tests.
  4. Identify trust boundaries, attacker-controlled inputs, and negative security cases.

Explanation

Correct Answer

A:

Design assertions need reproducible evidence.

Incorrect Answers

B:

Financial formulas can appear plausible while producing wrong values. design assertions need reproducible evidence.

C:

Reviewable reasoning aids validation without treating the explanation as proof. Design assertions need reproducible evidence.

D:

Explicit threat assumptions expose missing controls. design assertions need reproducible evidence.

Question 340

Copilot proposes a complicated concurrency optimization without tests and claims a runtime improvement. Which TWO requests improve reviewability? (Select TWO.)

  1. Ignore the project latency budget and memory limits.
  2. Treat the prose explanation as a formal proof of race freedom.
  3. Ask for the synchronization invariant and concurrency failure cases.
  4. Request reproducible benchmarks under a representative workload.
  5. Avoid running any tests because the suggested code is concise.

Explanation

Correct Answers

C:

Race safety requires explicit shared-state reasoning.

D:

Performance changes need measured outcomes.

Incorrect Answers

A:

Resource constraints determine operational suitability.

B:

LLM explanations are not formal correctness evidence.

E:

Brevity is not evidence of correctness.

GitHub Copilot (GH-300) Practice Tests