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Exam Code: GH-300

Exam Name GitHub Copilot

Certification Provider: Microsoft

Corresponding Certification: GitHub Copilot

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GitHub Copilot (GH-300) Practice Tests

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Microsoft GH-300 Practice Test 38

Question 370

A generated asynchronous call path ignores cancellation and leaves resources open. Which acceptance evidence should the team verify?

  1. Cancelling a request closes handles and stops unwanted work.
  2. Wrong-issuer and wrong-audience tokens are rejected in tests.
  3. Invalid dates are rejected and valid leap-day inputs pass.
  4. The patched endpoint preserves documented status and body semantics.

Explanation

Correct Answer

A:

This outcome directly checks the intended behavior: Cancelling a request closes handles and stops unwanted work. The requested action was: Add cancellation handling and resource cleanup tests.

Incorrect Answers

B:

“Wrong-issuer and wrong-audience tokens are rejected in tests.” does not demonstrate the result required here: Cancelling a request closes handles and stops unwanted work.

C:

“Invalid dates are rejected and valid leap-day inputs pass.” does not demonstrate the result required here: Cancelling a request closes handles and stops unwanted work.

D:

“The patched endpoint preserves documented status and body semantics.” does not demonstrate the result required here: Cancelling a request closes handles and stops unwanted work.

Question 371

A model produces unsupported assumptions after seeing an ambiguous bug description. Select the most appropriate next action for the team.

  1. Provide the real signature and request a constrained revision.
  2. Attach the failing regression fixture and ask for the minimal repair.
  3. Ask it to distinguish confirmed observations from hypotheses.
  4. Iterate through planning, sandbox execution, observed errors, and final review.

Explanation

Correct Answer

C:

Reasoning quality improves when evidence and inference are separated. Acceptance evidence: The answer labels uncertainty and requests only missing proof.

Incorrect Answers

A:

Iterative prompting can correct assumptions with grounded evidence. That recommendation is relevant to a different task: A first Copilot response misinterprets the return type for a library function. In this case the main need is: A model produces unsupported assumptions after seeing an ambiguous bug description.

B:

Specific feedback permits targeted iteration. That recommendation is relevant to a different task: A developer refines an earlier Copilot patch that broke a subtle edge case. In this case the main need is: A model produces unsupported assumptions after seeing an ambiguous bug description.

D:

Prompting is a feedback loop with real evidence rather than one-shot assurance. That recommendation is relevant to a different task: A developer wants a reliable generated migration script for a complex schema. In this case the main need is: A model produces unsupported assumptions after seeing an ambiguous bug description.

Question 372

For this GitHub Copilot case, which implementation decision is best supported? A developer copies a customer database row into a public issue to ask Copilot for help.

  1. Sanitize identifiers and use approved private context channels.
  2. Remove the credential, rotate any exposed value, and use approved secret storage.
  3. Replace sensitive values with fictional fixtures and minimize prompt context.
  4. Require migration review, backup plan, and deployment authorization.

Explanation

Correct Answer

A:

Confidential customer information should not be disclosed for convenience. Acceptance evidence: The issue and prompt context contain redacted synthetic data, not real customer records.

Incorrect Answers

B:

Generated code can inadvertently expose credentials copied from context. That recommendation is relevant to a different task: A draft API handler exposes a password embedded in a copied configuration example. In this case the main need is: A developer copies a customer database row into a public issue to ask Copilot for help.

C:

Test data can leak private information if copied indiscriminately. That recommendation is relevant to a different task: A generated unit-test example includes real email addresses from an internal issue. In this case the main need is: A developer copies a customer database row into a public issue to ask Copilot for help.

D:

Generated migration scripts can alter data irreversibly. That recommendation is relevant to a different task: A junior engineer asks Copilot to make a production database schema change instantly. In this case the main need is: A developer copies a customer database row into a public issue to ask Copilot for help.

Question 373

For this GitHub Copilot case, which implementation decision is best supported? An organization assigns Copilot seats through an identity-management workflow and must reconcile them.

  1. Use supported seat/subscription administration APIs with scoped permissions.
  2. Review and reconcile seat assignments through the approved administration experience.
  3. Use opt-in and feature-policy controls where supported.
  4. Configure model availability in the enterprise or organization policy controls.

Explanation

Correct Answer

A:

The Copilot REST endpoints can support managed license administration. Acceptance evidence: Seat inventory matches expected users without granting unrelated repository access.

Incorrect Answers

B:

License removal and resource access revocation are separate concerns. That recommendation is relevant to a different task: A GitHub admin must confirm that a terminated contractor no longer consumes an organizational Copilot seat. In this case the main need is: An organization assigns Copilot seats through an identity-management workflow and must reconcile them.

C:

Preview adoption is a governed choice and feature behavior may change. That recommendation is relevant to a different task: An organization wants to give only approved developers access to new preview Copilot features. In this case the main need is: An organization assigns Copilot seats through an identity-management workflow and must reconcile them.

D:

Administrators can constrain supported model choices separately from general access. That recommendation is relevant to a different task: An enterprise needs to limit which AI models employees can select in Copilot. In this case the main need is: An organization assigns Copilot seats through an identity-management workflow and must reconcile them.

Question 374

A project lead describes the following situation: An organization wants to give only approved developers access to new preview Copilot features. What should the developer do first?

  1. Use opt-in and feature-policy controls where supported.
  2. Set the relevant organizational Copilot feature policy to the permitted state.
  3. Configure model availability in the enterprise or organization policy controls.
  4. Configure supported MCP policy and server approvals at the appropriate governance layer.

Explanation

Correct Answer

A:

Preview adoption is a governed choice and feature behavior may change. Acceptance evidence: Preview capabilities appear only for the intended test group.

Incorrect Answers

B:

Central policies control eligible feature availability across accounts and surfaces. That recommendation is relevant to a different task: A company wants to disable agent mode for some Copilot users while retaining chat access. In this case the main need is: An organization wants to give only approved developers access to new preview Copilot features.

C:

Administrators can constrain supported model choices separately from general access. That recommendation is relevant to a different task: An enterprise needs to limit which AI models employees can select in Copilot. In this case the main need is: An organization wants to give only approved developers access to new preview Copilot features.

D:

Tool access should reflect enterprise authorization decisions. That recommendation is relevant to a different task: A security group needs central controls for third-party MCP use in an enterprise. In this case the main need is: An organization wants to give only approved developers access to new preview Copilot features.

Question 375

An AI-generated parser accepts an invalid date such as February 30. Following the chosen solution, what evidence best proves that it worked?

  1. Wrong-issuer and wrong-audience tokens are rejected in tests.
  2. Invalid dates are rejected and valid leap-day inputs pass.
  3. A deliberately wrong implementation fails the corrected tests.
  4. The staging rollout and recovery procedure complete successfully.

Explanation

Correct Answer

B:

This outcome directly checks the intended behavior: Invalid dates are rejected and valid leap-day inputs pass. The requested action was: Add calendar-aware validation tests and error handling.

Incorrect Answers

A:

“Wrong-issuer and wrong-audience tokens are rejected in tests.” does not demonstrate the result required here: Invalid dates are rejected and valid leap-day inputs pass.

C:

“A deliberately wrong implementation fails the corrected tests.” does not demonstrate the result required here: Invalid dates are rejected and valid leap-day inputs pass.

D:

“The staging rollout and recovery procedure complete successfully.” does not demonstrate the result required here: Invalid dates are rejected and valid leap-day inputs pass.

Question 376

A platform team wants to isolate private data from unapproved Copilot integrations. Which acceptance evidence should the team verify?

  1. A user lacking repository access cannot use its file context.
  2. The MCP credentials themselves cannot read the protected path.
  3. Sensitive files remain protected by filesystem and agent tool restrictions.
  4. An unapproved integration fails to retrieve protected repository data.

Explanation

Correct Answer

D:

This outcome directly checks the intended behavior: An unapproved integration fails to retrieve protected repository data. The requested action was: Disable unauthorized tools and provide least-privilege connectors.

Incorrect Answers

A:

“A user lacking repository access cannot use its file context.” does not demonstrate the result required here: An unapproved integration fails to retrieve protected repository data.

B:

“The MCP credentials themselves cannot read the protected path.” does not demonstrate the result required here: An unapproved integration fails to retrieve protected repository data.

C:

“Sensitive files remain protected by filesystem and agent tool restrictions.” does not demonstrate the result required here: An unapproved integration fails to retrieve protected repository data.

Question 377

A project lead describes the following situation: A library package update fixes one known CVE but introduces vulnerable transitive dependencies. What should the developer do first?

  1. Remove and rotate the secret and run secret-scanning checks.
  2. Run dependency scanning and test the resolved graph.
  3. Ask Copilot for fuzzing seeds and size-bound tests.
  4. Use Copilot to propose a mock-based contract test, then verify the real integration.

Explanation

Correct Answer

B:

Security risk includes transitive package versions. Acceptance evidence: The scan verifies the entire resolved dependency set.

Incorrect Answers

A:

Credentials in commits can remain accessible in history. That recommendation is relevant to a different task: A pull request adds an AWS access token into a configuration example. In this case the main need is: A library package update fixes one known CVE but introduces vulnerable transitive dependencies.

C:

Adversarial inputs can reveal parser edge cases. That recommendation is relevant to a different task: A file parser should withstand malformed and oversized input without crashing. In this case the main need is: A library package update fixes one known CVE but introduces vulnerable transitive dependencies.

D:

Mocking supports focused tests but cannot replace genuine compatibility checks. That recommendation is relevant to a different task: A new client library update breaks one integration test at a service boundary. In this case the main need is: A library package update fixes one known CVE but introduces vulnerable transitive dependencies.

Question 378

A team completed the change for this case: A Java repository needs instructions only for files inside a specific source directory. What observation best demonstrates the intended outcome?

  1. Answers reference the intended space documents and reflect updated GitHub sources.
  2. A source-file task uses the scoped rule while unrelated files do not inherit it.
  3. The agent produces a scoped diff and test output for review.
  4. Two invocations use the same rule set and produce tailored tests for their targets.

Explanation

Correct Answer

B:

This outcome directly checks the intended behavior: A source-file task uses the scoped rule while unrelated files do not inherit it. The requested action was: Use an appropriate path-specific instructions file for that directory.

Incorrect Answers

A:

“Answers reference the intended space documents and reflect updated GitHub sources.” does not demonstrate the result required here: A source-file task uses the scoped rule while unrelated files do not inherit it.

C:

“The agent produces a scoped diff and test output for review.” does not demonstrate the result required here: A source-file task uses the scoped rule while unrelated files do not inherit it.

D:

“Two invocations use the same rule set and produce tailored tests for their targets.” does not demonstrate the result required here: A source-file task uses the scoped rule while unrelated files do not inherit it.

Question 379

For this GitHub Copilot case, which implementation decision is best supported? A user wants Copilot to produce small code completions, not autonomously modify the workspace.

  1. Dismiss the inline suggestion without accepting it.
  2. Use agent mode with necessary tools and deliberate command approvals.
  3. Choose inline suggestions instead of agent-mode editing.
  4. Use inline suggestions in a supported Copilot-enabled IDE.

Explanation

Correct Answer

C:

Interaction modes offer different levels of initiative. Acceptance evidence: Only explicitly accepted completion text is inserted.

Incorrect Answers

A:

Generated completion is optional and should not be inserted automatically. That recommendation is relevant to a different task: A developer sees a pale suggestion but wants to keep existing code unchanged. In this case the main need is: A user wants Copilot to produce small code completions, not autonomously modify the workspace.

B:

Agent mode can plan, edit, run tools, and iterate, subject to policy. That recommendation is relevant to a different task: A bug needs iterative edits and terminal tests across project files. In this case the main need is: A user wants Copilot to produce small code completions, not autonomously modify the workspace.

D:

Inline completion predicts code near the cursor without a chat conversation. That recommendation is relevant to a different task: An editor user wants Copilot to complete a short Python expression while they type. In this case the main need is: A user wants Copilot to produce small code completions, not autonomously modify the workspace.

Question 380

A developer expects GitHub Copilot CLI to honor IDE content exclusions identically. Select the most appropriate next action for the team.

  1. Consult the current tool support matrix and constrain CLI permissions separately.
  2. Route the change to a repository or organization admin with the required authority.
  3. Open the supported code reference information in the IDE or GitHub interface.
  4. Check client installation and local extension enablement separately.

Explanation

Correct Answer

A:

CLI and IDE surfaces differ in documented exclusion support. Acceptance evidence: The CLI cannot read protected paths under explicit filesystem controls.

Incorrect Answers

B:

Copilot security settings require appropriate governance permissions. That recommendation is relevant to a different task: A user requests changes to repository policy but their GitHub role lacks administrative rights. In this case the main need is: A developer expects GitHub Copilot CLI to honor IDE content exclusions identically.

C:

Public-code references can identify matching repository and license data. That recommendation is relevant to a different task: A user receives a suggestion matching public code and wants to inspect the referenced license. In this case the main need is: A developer expects GitHub Copilot CLI to honor IDE content exclusions identically.

D:

Feature availability varies across browser and IDE environments. That recommendation is relevant to a different task: A developer's editor extension is disabled but chat still works on GitHub.com. In this case the main need is: A developer expects GitHub Copilot CLI to honor IDE content exclusions identically.