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Microsoft GH-300 Practice Test 48

Question 470

Copilot reports a match to public code that has since been moved, and no reference appears for another suspicious snippet. Which TWO principles should guide review? (Select TWO.)

  1. Assume the public index includes every private enterprise repository.
  2. Assume a missing reference makes all output public domain.
  3. Perform independent provenance review even when no match indicator appears.
  4. Consider public-index refresh delays when interpreting moved or deleted matches.
  5. Delete reference logs to remove code licensing obligations.

Explanation

Correct Answers

C:

Absence of a detected match is not proof of originality.

D:

References may lag changes to public repositories.

Incorrect Answers

A:

Public-code matching does not index all inaccessible private code.

B:

Matching coverage and license rights are different concepts.

E:

Concealing provenance does not resolve compliance risk.

Question 471

An exclusion rule intended for `config/private.yaml` fails to block context in a supported editor. What should be checked?

  1. Verify the rule path, repository identifier, and client-specific enforcement support.
  2. Apply separate tool and file access controls because those modes lack the same exclusion support.
  3. Restrict filesystem access and avoid relying on exclusion for symlink protection.
  4. Restrict the MCP source index and server-side permission checks.

Explanation

Correct Answer

A:

An incorrect path or unsupported surface can explain leakage.

Incorrect Answers

B:

Current GitHub documentation distinguishes support by mode. An incorrect path or unsupported surface can explain leakage.

C:

Symlink exclusions are a documented limitation. an incorrect path or unsupported surface can explain leakage.

D:

GitHub editor exclusions cannot reliably police all third-party tools. an incorrect path or unsupported surface can explain leakage.

Question 472

A content exclusion is saved but a user reports it did not apply immediately. What should admins inspect?

  1. Verify the rule path, repository identifier, and client-specific enforcement support.
  2. Test the rule and confirm client refresh or propagation as documented.
  3. Restrict the MCP source index and server-side permission checks.
  4. Apply separate tool and file access controls because those modes lack the same exclusion support.

Explanation

Correct Answer

B:

Policy availability to the client can lag administrative edits.

Incorrect Answers

A:

An incorrect path or unsupported surface can explain leakage. What should admins inspect. Policy availability to the client can lag administrative edits.

C:

GitHub editor exclusions cannot reliably police all third-party tools. policy availability to the client can lag administrative edits.

D:

Current GitHub documentation distinguishes support by mode. Policy availability to the client can lag administrative edits.

Question 473

A confidential file is reachable through a symlink despite being excluded by path. What should be done?

  1. Restrict filesystem access and avoid relying on exclusion for symlink protection.
  2. Verify the rule path, repository identifier, and client-specific enforcement support.
  3. Test the rule and confirm client refresh or propagation as documented.
  4. Restrict the MCP source index and server-side permission checks.

Explanation

Correct Answer

A:

Symlink exclusions are a documented limitation.

Incorrect Answers

B:

An incorrect path or unsupported surface can explain leakage. What should be done. Symlink exclusions are a documented limitation.

C:

Policy availability to the client can lag administrative edits. symlink exclusions are a documented limitation.

D:

GitHub editor exclusions cannot reliably police all third-party tools. symlink exclusions are a documented limitation.

Question 474

A team expects exclusions in Edit and Agent modes of VS Code to work identically to inline suggestions. What should it do?

  1. Verify the rule path, repository identifier, and client-specific enforcement support.
  2. Test the rule and confirm client refresh or propagation as documented.
  3. Restrict filesystem access and avoid relying on exclusion for symlink protection.
  4. Apply separate tool and file access controls because those modes lack the same exclusion support.

Explanation

Correct Answer

D:

Current GitHub documentation distinguishes support by mode.

Incorrect Answers

A:

An incorrect path or unsupported surface can explain leakage. What should it do. Current GitHub documentation distinguishes support by mode.

B:

Policy availability to the client can lag administrative edits. current GitHub documentation distinguishes support by mode.

C:

Symlink exclusions are a documented limitation. Current GitHub documentation distinguishes support by mode.

Question 475

A custom MCP index returns excluded data to an agent. Where should the fix be implemented?

  1. Restrict filesystem access and avoid relying on exclusion for symlink protection.
  2. Apply separate tool and file access controls because those modes lack the same exclusion support.
  3. Test the rule and confirm client refresh or propagation as documented.
  4. Restrict the MCP source index and server-side permission checks.

Explanation

Correct Answer

D:

GitHub editor exclusions cannot reliably police all third-party tools.

Incorrect Answers

A:

Symlink exclusions are a documented limitation. GitHub editor exclusions cannot reliably police all third-party tools.

B:

Current GitHub documentation distinguishes support by mode. gitHub editor exclusions cannot reliably police all third-party tools.

C:

Policy availability to the client can lag administrative edits. gitHub editor exclusions cannot reliably police all third-party tools.

Question 476

A suggested dependency appears well named but might be typosquatted. What should the developer review?

  1. Encode or sanitize untrusted content and test script-injection payloads.
  2. Use dedicated secret scanning and code-review controls independently of public-code matching.
  3. Apply the framework's supported CSRF defenses and add negative tests.
  4. Verify package origin, signatures, and registry reputation before install.

Explanation

Correct Answer

D:

Matching-public-code filtering is not a supply-chain security scanner.

Incorrect Answers

A:

A plausible generated UI can still introduce cross-site scripting. matching-public-code filtering is not a supply-chain security scanner.

B:

Code similarity checks and credential detection address different risks. What should the developer review. Matching-public-code filtering is not a supply-chain security scanner.

C:

Prompt assistance does not replace web security design review. Matching-public-code filtering is not a supply-chain security scanner.

Question 477

Copilot emits a regex that backtracks catastrophically on attacker input. What validation is needed?

  1. Verify package origin, signatures, and registry reputation before install.
  2. Encode or sanitize untrusted content and test script-injection payloads.
  3. Use dedicated secret scanning and code-review controls independently of public-code matching.
  4. Stress-test worst-case inputs and choose a bounded-time pattern.

Explanation

Correct Answer

D:

Generated syntax can be valid yet vulnerable to denial of service.

Incorrect Answers

A:

Matching-public-code filtering is not a supply-chain security scanner. generated syntax can be valid yet vulnerable to denial of service.

B:

A plausible generated UI can still introduce cross-site scripting. generated syntax can be valid yet vulnerable to denial of service.

C:

Code similarity checks and credential detection address different risks. What validation is needed. Generated syntax can be valid yet vulnerable to denial of service.

Question 478

An AI-generated endpoint lacks CSRF protection for cookie-authenticated state changes. What should be required?

  1. Verify package origin, signatures, and registry reputation before install.
  2. Use dedicated secret scanning and code-review controls independently of public-code matching.
  3. Apply the framework's supported CSRF defenses and add negative tests.
  4. Stress-test worst-case inputs and choose a bounded-time pattern.

Explanation

Correct Answer

C:

Prompt assistance does not replace web security design review.

Incorrect Answers

A:

Matching-public-code filtering is not a supply-chain security scanner. prompt assistance does not replace web security design review.

B:

Code similarity checks and credential detection address different risks. What should be required. Prompt assistance does not replace web security design review.

D:

Generated syntax can be valid yet vulnerable to denial of service. Prompt assistance does not replace web security design review.

Question 479

A patch uses unchecked HTML insertion for user input. What should a reviewer request?

  1. Apply the framework's supported CSRF defenses and add negative tests.
  2. Stress-test worst-case inputs and choose a bounded-time pattern.
  3. Encode or sanitize untrusted content and test script-injection payloads.
  4. Verify package origin, signatures, and registry reputation before install.

Explanation

Correct Answer

C:

A plausible generated UI can still introduce cross-site scripting.

Incorrect Answers

A:

Prompt assistance does not replace web security design review. a plausible generated UI can still introduce cross-site scripting.

B:

Generated syntax can be valid yet vulnerable to denial of service. A plausible generated UI can still introduce cross-site scripting.

D:

Matching-public-code filtering is not a supply-chain security scanner. a plausible generated UI can still introduce cross-site scripting.

Question 480

A team assumes enabling public-code filtering also detects secrets automatically. What distinction matters?

  1. Stress-test worst-case inputs and choose a bounded-time pattern.
  2. Apply the framework's supported CSRF defenses and add negative tests.
  3. Use dedicated secret scanning and code-review controls independently of public-code matching.
  4. Encode or sanitize untrusted content and test script-injection payloads.

Explanation

Correct Answer

C:

Code similarity checks and credential detection address different risks.

Incorrect Answers

A:

Generated syntax can be valid yet vulnerable to denial of service. Code similarity checks and credential detection address different risks.

B:

Prompt assistance does not replace web security design review. code similarity checks and credential detection address different risks.

D:

A plausible generated UI can still introduce cross-site scripting. What distinction matters. Code similarity checks and credential detection address different risks.

GitHub Copilot (GH-300) Practice Tests