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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 14

Question 130

An engineer needs to find the available CLI slash commands without memorizing them. Which acceptance evidence should the team verify?

  1. The CLI installs without runtime version errors and starts successfully.
  2. A fresh shell resolves the copilot command after installation.
  3. The desired previous prompt appears before submission.
  4. The command list is displayed for the current CLI version.

Explanation

Correct Answer

D:

This outcome directly checks the intended behavior: The command list is displayed for the current CLI version. The requested action was: Open the CLI help using /help in the interactive session.

Incorrect Answers

A:

“The CLI installs without runtime version errors and starts successfully.” does not demonstrate the result required here: The command list is displayed for the current CLI version.

B:

“A fresh shell resolves the copilot command after installation.” does not demonstrate the result required here: The command list is displayed for the current CLI version.

C:

“The desired previous prompt appears before submission.” does not demonstrate the result required here: The command list is displayed for the current CLI version.

Question 131

A model suggests disabling audit logging to reduce application latency. Select the most appropriate next action for the team.

  1. Sanitize identifiers and use approved private context channels.
  2. Remove the credential, rotate any exposed value, and use approved secret storage.
  3. Reject unsafe shortcuts and benchmark an approved performance alternative.
  4. Check the original license and preserve applicable notices.

Explanation

Correct Answer

C:

Performance gains do not justify violating security or compliance controls. Acceptance evidence: Latency improves while audit events remain complete and queryable.

Incorrect Answers

A:

Confidential customer information should not be disclosed for convenience. That recommendation is relevant to a different task: A developer copies a customer database row into a public issue to ask Copilot for help. In this case the main need is: A model suggests disabling audit logging to reduce application latency.

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 model suggests disabling audit logging to reduce application latency.

D:

AI summarization can remove legally significant constraints. That recommendation is relevant to a different task: A summary of a license notice omits attribution obligations for derived code. In this case the main need is: A model suggests disabling audit logging to reduce application latency.

Question 132

A project lead describes the following situation: A prompt includes a huge log dump, and the essential error is ignored. What should the developer do first?

  1. Review the feature's documented unsupported modes and indirect context caveats.
  2. Treat a match reference as provenance evidence requiring licensing review.
  3. Trim and summarize noisy context to preserve the decisive evidence.
  4. Recognize that local code comments can be included in prompt context.

Explanation

Correct Answer

C:

Context windows and relevance weighting are limited resources. Acceptance evidence: The focused request identifies the true failing stack frame.

Incorrect Answers

A:

Exclusion coverage varies by client and integration. That recommendation is relevant to a different task: A security lead believes a content-exclusion policy guarantees all tools never encounter the excluded data. In this case the main need is: A prompt includes a huge log dump, and the essential error is ignored.

B:

Detection does not authorize copying or eliminate compliance obligations. That recommendation is relevant to a different task: A team is concerned that a matching-code reference is equivalent to license clearance. In this case the main need is: A prompt includes a huge log dump, and the essential error is ignored.

D:

Comments and adjacent tokens influence completion predictions. That recommendation is relevant to a different task: A user wants to know why an inline suggestion depends on a nearby comment. In this case the main need is: A prompt includes a huge log dump, and the essential error is ignored.

Question 133

After addressing this GitHub Copilot situation, what result most directly demonstrates that the requirement is met? A draft API handler exposes a password embedded in a copied configuration example.

  1. Review evidence confirms approved primitives and tests cover misuse and invalid inputs.
  2. Disaggregated tests identify unfair outcomes and the approved fix meets documented fairness goals.
  3. Secret scans pass and the replacement handler gets credentials through its authorized runtime.
  4. The issue and prompt context contain redacted synthetic data, not real customer records.

Explanation

Correct Answer

C:

This outcome directly checks the intended behavior: Secret scans pass and the replacement handler gets credentials through its authorized runtime. The requested action was: Remove the credential, rotate any exposed value, and use approved secret storage.

Incorrect Answers

A:

“Review evidence confirms approved primitives and tests cover misuse and invalid inputs.” does not demonstrate the result required here: Secret scans pass and the replacement handler gets credentials through its authorized runtime.

B:

“Disaggregated tests identify unfair outcomes and the approved fix meets documented fairness goals.” does not demonstrate the result required here: Secret scans pass and the replacement handler gets credentials through its authorized runtime.

D:

“The issue and prompt context contain redacted synthetic data, not real customer records.” does not demonstrate the result required here: Secret scans pass and the replacement handler gets credentials through its authorized runtime.

Question 134

A team completed the change for this case: A payment calculation uses floating-point arithmetic and fails on rounding cases. What observation best demonstrates the intended outcome?

  1. A revoked access rule takes effect within the required period.
  2. An injection fixture is treated as data and cannot change query structure.
  3. The token is revoked and the repository scan reports no usable secret.
  4. Cent-level outputs match the independently calculated fixture values.

Explanation

Correct Answer

D:

This outcome directly checks the intended behavior: Cent-level outputs match the independently calculated fixture values. The requested action was: Generate decimal precision tests with expected financial rounding.

Incorrect Answers

A:

“A revoked access rule takes effect within the required period.” does not demonstrate the result required here: Cent-level outputs match the independently calculated fixture values.

B:

“An injection fixture is treated as data and cannot change query structure.” does not demonstrate the result required here: Cent-level outputs match the independently calculated fixture values.

C:

“The token is revoked and the repository scan reports no usable secret.” does not demonstrate the result required here: Cent-level outputs match the independently calculated fixture values.

Question 135

After addressing this GitHub Copilot situation, what result most directly demonstrates that the requirement is met? A generated completion is displayed in the editor but should not alter source until accepted.

  1. The answer updates only after actual current repository evidence is provided.
  2. The focused request identifies the true failing stack frame.
  3. A build against installed package versions exposes the unsupported method.
  4. The Git diff stays unchanged when the suggestion is dismissed.

Explanation

Correct Answer

D:

This outcome directly checks the intended behavior: The Git diff stays unchanged when the suggestion is dismissed. The requested action was: Keep generated output separate from committed code until user action.

Incorrect Answers

A:

“The answer updates only after actual current repository evidence is provided.” does not demonstrate the result required here: The Git diff stays unchanged when the suggestion is dismissed.

B:

“The focused request identifies the true failing stack frame.” does not demonstrate the result required here: The Git diff stays unchanged when the suggestion is dismissed.

C:

“A build against installed package versions exposes the unsupported method.” does not demonstrate the result required here: The Git diff stays unchanged when the suggestion is dismissed.

Question 136

A team wants consistent naming and test conventions during repository-local coding assistance. Following the chosen solution, what evidence best proves that it worked?

  1. The agent produces a scoped diff and test output for review.
  2. The answer names the correct issue status and ADR design decision.
  3. Generated changes conform to the specified names and test layout.
  4. The visible diff matches the requested changes and required checks complete.

Explanation

Correct Answer

C:

This outcome directly checks the intended behavior: Generated changes conform to the specified names and test layout. The requested action was: Add reviewed repository custom instructions in the supported instructions file.

Incorrect Answers

A:

“The agent produces a scoped diff and test output for review.” does not demonstrate the result required here: Generated changes conform to the specified names and test layout.

B:

“The answer names the correct issue status and ADR design decision.” does not demonstrate the result required here: Generated changes conform to the specified names and test layout.

D:

“The visible diff matches the requested changes and required checks complete.” does not demonstrate the result required here: Generated changes conform to the specified names and test layout.

Question 137

After addressing this GitHub Copilot situation, what result most directly demonstrates that the requirement is met? A generated autocomplete suggestion contains a deprecated API method.

  1. The accepted revision builds against the installed supported API.
  2. Only explicitly accepted completion text is inserted.
  3. The supported replacement command works without downgrading security controls.
  4. The diff identifies exactly which tests and source files were modified.

Explanation

Correct Answer

A:

This outcome directly checks the intended behavior: The accepted revision builds against the installed supported API. The requested action was: Reject the proposal and provide current project API references.

Incorrect Answers

B:

“Only explicitly accepted completion text is inserted.” does not demonstrate the result required here: The accepted revision builds against the installed supported API.

C:

“The supported replacement command works without downgrading security controls.” does not demonstrate the result required here: The accepted revision builds against the installed supported API.

D:

“The diff identifies exactly which tests and source files were modified.” does not demonstrate the result required here: The accepted revision builds against the installed supported API.

Question 138

A project lead describes the following situation: An engineer wants a function generated from a specification but has no sample calls. What should the developer do first?

  1. Include the error, relevant call path and environment in context.
  2. Include public API invariants and tests in the prompt.
  3. Include representative input and output examples in the prompt.
  4. Supply permitted and rejected examples plus anchoring requirements.

Explanation

Correct Answer

C:

Few-shot examples help constrain desired behavior and formatting. Acceptance evidence: The generated function matches both provided examples and edge tests.

Incorrect Answers

A:

Effective prompts provide the evidence needed to diagnose the specific issue. That recommendation is relevant to a different task: A developer asks Copilot to explain a stack trace with no failing code attached. In this case the main need is: An engineer wants a function generated from a specification but has no sample calls.

B:

Explicit negative constraints prevent unintended interface changes. That recommendation is relevant to a different task: A function must remain backward compatible but the initial prompt omits compatibility rules. In this case the main need is: An engineer wants a function generated from a specification but has no sample calls.

D:

Regex design depends on boundary details not implied by a short label. That recommendation is relevant to a different task: A user asks Copilot for a regular expression without examples of allowed strings. In this case the main need is: An engineer wants a function generated from a specification but has no sample calls.

Question 139

A project lead describes the following situation: A developer requests a high-level refactor but the agent wants to run an untrusted migration script. What should the developer do first?

  1. Choose Copilot agent mode with reviewed tool permissions and changes.
  2. Request a grounded code review pointing to lines and tests.
  3. Request a plan using a supported planning interaction before agent execution.
  4. Decline that tool command and request a plan that avoids destructive execution.

Explanation

Correct Answer

D:

Task delegation does not override command approval or environment safety. Acceptance evidence: The agent completes a non-destructive analysis without running the script.

Incorrect Answers

A:

Agent mode can execute multi-step workspace tasks subject to approvals. That recommendation is relevant to a different task: A developer needs an agent to change multiple files and run tests under supervision. In this case the main need is: A developer requests a high-level refactor but the agent wants to run an untrusted migration script.

B:

Actionable review feedback needs context and reproducibility. That recommendation is relevant to a different task: A reviewer receives an AI-suggested fix with no exact file location. In this case the main need is: A developer requests a high-level refactor but the agent wants to run an untrusted migration script.

C:

Planning separates intended steps from authorized modifications. That recommendation is relevant to a different task: An engineer wants a short implementation plan before granting permission to edit code. In this case the main need is: A developer requests a high-level refactor but the agent wants to run an untrusted migration script.

Question 140

A developer asks whether changing the model selected for Copilot changes every policy. Which recommendation best addresses the stated constraint?

  1. Clarify the distinction between learned knowledge and fresh authorized retrieval.
  2. Separate model availability policy from data-handling and repository permissions.
  3. Use privacy-approved diagnostic metadata rather than full sensitive payloads.
  4. Clarify that client and retrieval mechanisms select context under permissions and limits.

Explanation

Correct Answer

B:

Model selection and organizational access controls are distinct layers. Acceptance evidence: The selected model changes while security and access restrictions remain enforced.

Incorrect Answers

A:

Foundation model training does not ensure live knowledge of repository state. That recommendation is relevant to a different task: An engineer says Copilot's model must possess current repository status even without access to it. In this case the main need is: A developer asks whether changing the model selected for Copilot changes every policy.

C:

Prompt and response flows must respect confidentiality and data controls. That recommendation is relevant to a different task: A service pipeline needs to correlate a Copilot prompt with a model response while avoiding secret logging. In this case the main need is: A developer asks whether changing the model selected for Copilot changes every policy.

D:

Copilot context is bounded by tool, repository access, and model window. That recommendation is relevant to a different task: An administrator believes the model itself reads the entire private repository automatically on every request. In this case the main need is: A developer asks whether changing the model selected for Copilot changes every policy.