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Microsoft AZ-400 Practice Test 19

Question 180

A research app stores many changing model artifacts in the main Git history and CI workers exhaust disk on every clone. Choose TWO measures that implement and verify an effective Azure DevOps response to this specific situation. (Choose TWO.)

  1. Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.
  2. Declare git lfs for oversized binary assets in version history successful solely from a green pipeline status and skip checking its actual control outcome.
  3. Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.
  4. Dismiss the known risk for git lfs for oversized binary assets in version history and keep no evidence or accountable owner after deployment.
  5. Bypass review and testing for git lfs for oversized binary assets in version history whenever the release deadline is urgent, applying the change to production immediately.

Explanation

Correct Answers

A:

Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management. Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy. Repository growth can break build environments or make historical releases impossible to reconstruct.

C:

Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use. Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

Incorrect Answers

B:

Declare git lfs for oversized binary assets in version history successful solely from a green pipeline status and skip checking its actual control outcome. It conflicts with the stated operating condition: Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

D:

Dismiss the known risk for git lfs for oversized binary assets in version history and keep no evidence or accountable owner after deployment. It conflicts with the stated operating condition: Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

E:

Bypass review and testing for git lfs for oversized binary assets in version history whenever the release deadline is urgent, applying the change to production immediately. It conflicts with the stated operating condition: Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

Question 181

A monorepo contains hundreds of services yet a small patch job clones the full source tree and times out daily. Which implementation BEST addresses the operational issue?

  1. Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs.
  2. Protect critical release tags and pin deployment records to immutable commit IDs and associated artifact digests.
  3. Use reflog or known commit identifiers to recover the intended change, then reapply normal PR and validation rules.
  4. Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.

Explanation

Correct Answer

A:

Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs. Large repositories benefit from selective history and working trees only when dependency boundaries are known. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

B:

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 sparse checkout and scalar for very large monorepositories.

C:

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 sparse checkout and scalar for very large monorepositories.

D:

Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.

Question 182

A monorepo contains hundreds of services yet a small patch job clones the full source tree and times out daily. How should the team validate the intended result?

  1. Review effective permissions and audit membership changes for a sample of third-party identities.
  2. Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts.
  3. Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.
  4. Confirm credential revocation, search reachable refs and forks, and verify no operational workflow still depends on the leaked key.

Explanation

Correct Answer

B:

Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts. Large repositories benefit from selective history and working trees only when dependency boundaries are known.

Incorrect Answers

A:

Review effective permissions and audit membership changes for a sample of third-party identities. That applies to least-privilege github organization collaborator permissions, not sparse checkout and scalar for very large monorepositories.

C:

Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.

D:

Confirm credential revocation, search reachable refs and forks, and verify no operational workflow still depends on the leaked key.

Question 183

A monorepo contains hundreds of services yet a small patch job clones the full source tree and times out daily. Which design distinction is MOST relevant in these conditions?

  1. Large repositories benefit from selective history and working trees only when dependency boundaries are known.
  2. Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation.
  3. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.
  4. Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

Explanation

Correct Answer

A:

Large repositories benefit from selective history and working trees only when dependency boundaries are known. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

B:

Repository access is a sensitive software supply-chain boundary, not simply a convenience for team participation. That applies to least-privilege github organization collaborator permissions, not controlling principle for sparse checkout and scalar for very large monorepositories.

C:

Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

D:

Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

Question 184

A monorepo contains hundreds of services yet a small patch job clones the full source tree and times out daily. Which ongoing guardrail would BEST prevent this problem from recurring?

  1. Document recovery actions and validate branch history and repository permissions before a restored commit is merged.
  2. Enforce secret scanning, tight credential scopes, and training on safe Git history rewriting procedures.
  3. Apply dependency update automation and retain provenance of shared component versions.
  4. Reassess checkout filters when shared libraries and project boundaries change.

Explanation

Correct Answer

D:

Reassess checkout filters when shared libraries and project boundaries change. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

A:

Document recovery actions and validate branch history and repository permissions before a restored commit is merged. This helps sustain a control for recover deleted commits using git reflog safely; it does not directly stop recurrence of sparse checkout and scalar for very large monorepositories described in this case.

B:

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 sparse checkout and scalar for very large monorepositories described in this case.

C:

Apply dependency update automation and retain provenance of shared component versions.

Question 185

A monorepo contains hundreds of services yet a small patch job clones the full source tree and times out daily. Which risk is directly created by the described failure?

  1. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.
  2. Repository growth can break build environments or make historical releases impossible to reconstruct.
  3. A leaked credential can remain exploitable after superficial cleanup of the latest branch contents.
  4. Recreating lost work manually can omit required changes or introduce an unreviewed release artifact.

Explanation

Correct Answer

A:

Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds. This is the directly relevant business or security consequence of sparse checkout and scalar for very large monorepositories. Root cause: Large repositories benefit from selective history and working trees only when dependency boundaries are known.

Incorrect Answers

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 sparse checkout and scalar for very large monorepositories and has a different direct consequence.

C:

A leaked credential can remain exploitable after superficial cleanup of the latest branch contents. That risk is relevant to removing committed secrets from git and rotating credentials, but the specific unresolved condition here concerns sparse checkout and scalar for very large monorepositories and has a different direct consequence.

D:

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 sparse checkout and scalar for very large monorepositories and has a different direct consequence.

Question 186

A large enterprise uses a shared Git repository but developer machines spend hours loading unrelated history and working trees. Which solution should be prioritized to resolve the stated failure?

  1. Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.
  2. Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs.
  3. Protect critical release tags and pin deployment records to immutable commit IDs and associated artifact digests.
  4. Use reflog or known commit identifiers to recover the intended change, then reapply normal PR and validation rules.

Explanation

Correct Answer

B:

Apply supported partial-clone, sparse-checkout, or Scalar patterns tailored to service boundaries and CI workload needs. Large repositories benefit from selective history and working trees only when dependency boundaries are known. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

A:

Use Git LFS or appropriate artifact storage for large binaries while retaining versioned pointer and permission management.

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 sparse checkout and scalar for very large monorepositories.

D:

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 sparse checkout and scalar for very large monorepositories.

Question 187

A large enterprise uses a shared Git repository but developer machines spend hours loading unrelated history and working trees. Which evidence would BEST demonstrate that the fix operates as intended?

  1. Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.
  2. Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts.
  3. Confirm credential revocation, search reachable refs and forks, and verify no operational workflow still depends on the leaked key.
  4. Locate the original commit hash, compare its diff with the issue, and rerun required tests after recovery.

Explanation

Correct Answer

B:

Measure checkout duration and verify a narrowed checkout still fetches all dependencies and required build scripts. Large repositories benefit from selective history and working trees only when dependency boundaries are known.

Incorrect Answers

A:

Clone a test repository with and without LFS access and verify large-object retrieval, revisions, and CI runner storage use.

C:

Confirm credential revocation, search reachable refs and forks, and verify no operational workflow still depends on the leaked key.

D:

Locate the original commit hash, compare its diff with the issue, and rerun required tests after recovery. That applies to recover deleted commits using git reflog safely, not sparse checkout and scalar for very large monorepositories.

Question 188

A large enterprise uses a shared Git repository but developer machines spend hours loading unrelated history and working trees. Which design distinction is MOST relevant in these conditions?

  1. Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.
  2. Large repositories benefit from selective history and working trees only when dependency boundaries are known.
  3. Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.
  4. Git recovery can recover commit objects, but recovering content does not grant approval to deploy it.

Explanation

Correct Answer

B:

Large repositories benefit from selective history and working trees only when dependency boundaries are known. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

A:

Git's ordinary object graph is inefficient for frequently revised large binaries and requires an explicit asset strategy.

C:

Cross-repository reuse needs stable dependency identities to prevent unreviewed cross-team changes.

D:

Git recovery can recover commit objects, but recovering content does not grant approval to deploy it. That applies to recover deleted commits using git reflog safely, not controlling principle for sparse checkout and scalar for very large monorepositories.

Question 189

A large enterprise uses a shared Git repository but developer machines spend hours loading unrelated history and working trees. Which ongoing guardrail would BEST prevent this problem from recurring?

  1. Restrict tag deletion and modification and monitor unauthorized release reference changes.
  2. Apply dependency update automation and retain provenance of shared component versions.
  3. Enforce file-size policies and maintain LFS availability and retention for required revisions.
  4. Reassess checkout filters when shared libraries and project boundaries change.

Explanation

Correct Answer

D:

Reassess checkout filters when shared libraries and project boundaries change. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.

Incorrect Answers

A:

Restrict tag deletion and modification and monitor unauthorized release reference changes. This helps sustain a control for protected release tags and verifiable version references; it does not directly stop recurrence of sparse checkout and scalar for very large monorepositories described in this case.

B:

Apply dependency update automation and retain provenance of shared component versions.

C:

Enforce file-size policies and maintain LFS availability and retention for required revisions. This helps sustain a control for git lfs for oversized binary assets in version history; it does not directly stop recurrence of sparse checkout and scalar for very large monorepositories described in this case.

Question 190

A large enterprise uses a shared Git repository but developer machines spend hours loading unrelated history and working trees. Which risk is directly created by the described failure?

  1. Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds.
  2. Repository growth can break build environments or make historical releases impossible to reconstruct.
  3. A library change can unexpectedly break production consumers or leave older copies vulnerable.
  4. Recreating lost work manually can omit required changes or introduce an unreviewed release artifact.

Explanation

Correct Answer

A:

Overly broad clones waste time while overly narrow clones silently omit files essential to dependable builds. This is the directly relevant business or security consequence of sparse checkout and scalar for very large monorepositories. Root cause: Large repositories benefit from selective history and working trees only when dependency boundaries are known.

Incorrect Answers

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 sparse checkout and scalar for very large monorepositories and has a different direct consequence.

C:

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 sparse checkout and scalar for very large monorepositories and has a different direct consequence.

D:

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 sparse checkout and scalar for very large monorepositories and has a different direct consequence.

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

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