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Microsoft AZ-400 Practice Test 21

Question 200

A team uses an unpinned Git submodule branch as a dependency, causing the tested release to retrieve different code later. Choose THREE measures that implement and verify an effective Azure DevOps response to this specific situation. (Choose THREE.)

  1. Declare cross-repository shared code via versioned packages successful solely from a green pipeline status and skip checking its actual control outcome.
  2. Apply dependency update automation and retain provenance of shared component versions.
  3. Bypass review and testing for cross-repository shared code via versioned packages whenever the release deadline is urgent, applying the change to production immediately.
  4. Dismiss the known risk for cross-repository shared code via versioned packages and keep no evidence or accountable owner after deployment.
  5. Publish reusable components under immutable versions and define explicit cross-repository dependency ownership.
  6. Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes.

Explanation

Correct Answers

B:

Apply dependency update automation and retain provenance of shared component versions. A library change can unexpectedly break production consumers or leave older copies vulnerable.

E:

Publish reusable components under immutable versions and define explicit cross-repository dependency ownership. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes. A library change can unexpectedly break production consumers or leave older copies vulnerable.

F:

Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

Incorrect Answers

A:

Declare cross-repository shared code via versioned packages successful solely from a green pipeline status and skip checking its actual control outcome. It conflicts with the stated operating condition: Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

C:

Bypass review and testing for cross-repository shared code via versioned packages whenever the release deadline is urgent, applying the change to production immediately. It conflicts with the stated operating condition: Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

D:

Dismiss the known risk for cross-repository shared code via versioned packages and keep no evidence or accountable owner after deployment. It conflicts with the stated operating condition: Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

Question 201

An external documentation contractor receives repository administrator permission to modify one Markdown file. Which solution should be prioritized to resolve the stated failure?

  1. Publish reusable components under immutable versions and define explicit cross-repository dependency ownership.
  2. Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs.
  3. Grant scoped repository roles and time-limited external collaborator privileges based on business need.
  4. Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.

Explanation

Correct Answer

C:

Grant scoped repository roles and time-limited external collaborator privileges based on business need. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

A:

Publish reusable components under immutable versions and define explicit cross-repository dependency ownership.

B:

Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs. That applies to sparse checkout and scalar for very large monorepositories, not least-privilege github organization collaborator permissions.

D:

Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management. That applies to git lfs for oversized binary assets in version history, not least-privilege github organization collaborator permissions.

Question 202

An external documentation contractor receives repository administrator permission to modify one Markdown file. Which evidence would BEST demonstrate that the fix operates as intended?

  1. Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes.
  2. Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.
  3. Review effective permissions and audit membership changes for a sample of third-party identities.
  4. Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts.

Explanation

Correct Answer

C:

Review effective permissions and audit membership changes for a sample of third-party identities. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.

Incorrect Answers

A:

Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes. That applies to cross-repository shared code via versioned packages, not least-privilege github organization collaborator permissions.

B:

Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use. That applies to git lfs for oversized binary assets in version history, not least-privilege github organization collaborator permissions.

D:

Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts. That applies to sparse checkout and scalar for very large monorepositories, not least-privilege github organization collaborator permissions.

Question 203

An external documentation contractor receives repository administrator permission to modify one Markdown file. Which DevOps implementation principle BEST explains the issue?

  1. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.
  2. Removing a secret from current source does not invalidate leaked credentials or guarantee prior copies disappeared.
  3. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.
  4. A human-friendly release tag is not sufficient evidence when its target may be changed without control.

Explanation

Correct Answer

A:

Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

B:

Removing a secret from current source does not invalidate leaked credentials or guarantee prior copies disappeared.

C:

Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes. That applies to cross-repository shared code via versioned packages, not controlling principle for least-privilege github organization collaborator permissions.

D:

A human-friendly release tag is not sufficient evidence when its target may be changed without control.

Question 204

An external documentation contractor receives repository administrator permission to modify one Markdown file. What preventive practice should be maintained after the fix?

  1. Reassess checkout filters when shared libraries and project boundaries change.
  2. Enforce file-size policies and maintain LFS availability and retention for required revisions.
  3. Perform periodic collaborator recertification and remove access when contracts and assignments end.
  4. Enforce secret scanning, tight credential scopes, and training on safe Git history rewriting procedures.

Explanation

Correct Answer

C:

Perform periodic collaborator recertification and remove access when contracts and assignments end. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

A:

Reassess checkout filters when shared libraries and project boundaries change. This helps sustain a control for sparse checkout and scalar for very large monorepositories; it does not directly stop recurrence of least-privilege github organization collaborator permissions described in this case.

B:

Enforce file-size policies and maintain LFS availability and retention for required revisions.

D:

Enforce secret scanning, tight credential scopes, and training on safe Git history rewriting procedures. This helps sustain a control for removing committed secrets from git and rotating credentials; it does not directly stop recurrence of least-privilege github organization collaborator permissions described in this case.

Question 205

An external documentation contractor receives repository administrator permission to modify one Markdown file. What outcome most clearly explains the business impact?

  1. Production can run different code than the reviewed release despite using the same version label.
  2. Repository growth can break build environments or make historical releases impossible to reconstruct.
  3. Recreating lost work manually can omit required changes or introduce an unreviewed release artifact.
  4. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Explanation

Correct Answer

D:

An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code. This is the directly relevant business or security consequence of least-privilege github organization collaborator permissions. Root cause: Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.

Incorrect Answers

A:

Production can run different code than the reviewed release despite using the same version label. That risk is relevant to protected release tags and verifiable version references, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

B:

Repository growth can break build environments or make historical releases impossible to reconstruct. That risk is relevant to git lfs for oversized binary assets in version history, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

C:

Recreating lost work manually can omit required changes or introduce an unreviewed release artifact. That risk is relevant to recover deleted commits using git reflog safely, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

Question 206

A former vendor maintains active write access to private code repositories because access reviews omit outside collaborators. Which implementation BEST addresses the operational issue?

  1. Use reflog or known commit identifiers to recover the intended change, then reapply normal PR and validation rules.
  2. Grant scoped repository roles and time-limited external collaborator privileges based on business need.
  3. Protect critical release tags and pin deployment records to immutable commit IDs and associated artifact digests.
  4. Publish reusable components under immutable versions and define explicit cross-repository dependency ownership.

Explanation

Correct Answer

B:

Grant scoped repository roles and time-limited external collaborator privileges based on business need. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

A:

Use reflog or known commit identifiers to recover the intended change, then reapply normal PR and validation rules. That applies to recover deleted commits using git reflog safely, not least-privilege github organization collaborator permissions.

C:

Protect critical release tags and pin deployment records to immutable commit IDs and associated artifact digests. That applies to protected release tags and verifiable version references, not least-privilege github organization collaborator permissions.

D:

Publish reusable components under immutable versions and define explicit cross-repository dependency ownership.

Question 207

A former vendor maintains active write access to private code repositories because access reviews omit outside collaborators. How should the team validate the intended result?

  1. Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes.
  2. Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts.
  3. Review effective permissions and audit membership changes for a sample of third-party identities.
  4. Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.

Explanation

Correct Answer

C:

Review effective permissions and audit membership changes for a sample of third-party identities. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.

Incorrect Answers

A:

Rebuild a prior release using package lock or submodule commit pins and compare retrieved component hashes. That applies to cross-repository shared code via versioned packages, not least-privilege github organization collaborator permissions.

B:

Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts. That applies to sparse checkout and scalar for very large monorepositories, not least-privilege github organization collaborator permissions.

D:

Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use. That applies to git lfs for oversized binary assets in version history, not least-privilege github organization collaborator permissions.

Question 208

A former vendor maintains active write access to private code repositories because access reviews omit outside collaborators. Which DevOps implementation principle BEST explains the issue?

  1. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.
  2. Removing a secret from current source does not invalidate leaked credentials or guarantee prior copies disappeared.
  3. A human-friendly release tag is not sufficient evidence when its target may be changed without control.
  4. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

Explanation

Correct Answer

A:

Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

B:

Removing a secret from current source does not invalidate leaked credentials or guarantee prior copies disappeared.

C:

A human-friendly release tag is not sufficient evidence when its target may be changed without control.

D:

Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes. That applies to cross-repository shared code via versioned packages, not controlling principle for least-privilege github organization collaborator permissions.

Question 209

A former vendor maintains active write access to private code repositories because access reviews omit outside collaborators. What preventive practice should be maintained after the fix?

  1. Perform periodic collaborator recertification and remove access when contracts and assignments end.
  2. Enforce file-size policies and maintain LFS availability and retention for required revisions.
  3. Reassess checkout filters when shared libraries and project boundaries change.
  4. Apply dependency update automation and retain provenance of shared component versions.

Explanation

Correct Answer

A:

Perform periodic collaborator recertification and remove access when contracts and assignments end. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Incorrect Answers

B:

Enforce file-size policies and maintain LFS availability and retention for required revisions.

C:

Reassess checkout filters when shared libraries and project boundaries change. This helps sustain a control for sparse checkout and scalar for very large monorepositories; it does not directly stop recurrence of least-privilege github organization collaborator permissions described in this case.

D:

Apply dependency update automation and retain provenance of shared component versions. This helps sustain a control for cross-repository shared code via versioned packages; it does not directly stop recurrence of least-privilege github organization collaborator permissions described in this case.

Question 210

A former vendor maintains active write access to private code repositories because access reviews omit outside collaborators. What outcome most clearly explains the business impact?

  1. Recreating lost work manually can omit required changes or introduce an unreviewed release artifact.
  2. A library change can unexpectedly break production consumers or leave older copies vulnerable.
  3. Production can run different code than the reviewed release despite using the same version label.
  4. An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code.

Explanation

Correct Answer

D:

An unnecessary collaborator privilege can enable unauthorized source changes or exfiltrate proprietary code. This is the directly relevant business or security consequence of least-privilege github organization collaborator permissions. Root cause: Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.

Incorrect Answers

A:

Recreating lost work manually can omit required changes or introduce an unreviewed release artifact. That risk is relevant to recover deleted commits using git reflog safely, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

B:

A library change can unexpectedly break production consumers or leave older copies vulnerable. That risk is relevant to cross-repository shared code via versioned packages, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

C:

Production can run different code than the reviewed release despite using the same version label. That risk is relevant to protected release tags and verifiable version references, but the specific unresolved condition here concerns least-privilege github organization collaborator permissions and has a different direct consequence.

Designing and Implementing Microsoft DevOps Solutions (AZ-400) Practice Tests

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