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CompTIA SecurityX CAS-005 Practice Test 21

Question 200

A supply-chain review uses a vendor marketing certificate and ignores a build-system component announced end-of-life next quarter. Which test or observation would provide the clearest evidence that the correction worked?

  1. The release inventory flags impending EOL components and demonstrates a tested upgrade path before support ends.
  2. No replacement milestone has an accountable owner
  3. A vendor audit certificate is valid while patch supply is discontinued
  4. The build manifest still includes the unsupported component after its deadline

Explanation

Correct Answer

A:

The decisive acceptance evidence is: The release inventory flags impending EOL components and demonstrates a tested upgrade path before support ends. It demonstrates that the intervention—Map critical components, support windows and replacement milestones into the secure lifecycle and vendor evidence review—works in the scenario, rather than showing only a report, nominal configuration, or absence of alerts. An adverse test result would require remediation, not signoff.

Incorrect Answers

B:

Observing 'No replacement milestone has an accountable owner' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: The release inventory flags impending EOL components and demonstrates a tested upgrade path before support ends. That measures the actual result of map critical components, support windows and replacement milestones into the secure lifecycle and vendor evidence review.

C:

Observing 'A vendor audit certificate is valid while patch supply is discontinued' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: The release inventory flags impending EOL components and demonstrates a tested upgrade path before support ends. That measures the actual result of map critical components, support windows and replacement milestones into the secure lifecycle and vendor evidence review.

D:

Observing 'The build manifest still includes the unsupported component after its deadline' would not prove that the proposed security fix succeeded. This is a counterexample to successful enforcement: a prohibited action still succeeds or an expected boundary remains untested. To accept the remediation, the test must demonstrate: The release inventory flags impending EOL components and demonstrates a tested upgrade path before support ends. That measures the actual result of map critical components, support windows and replacement milestones into the secure lifecycle and vendor evidence review.

Question 201

A supply-chain review uses a vendor marketing certificate and ignores a build-system component announced end-of-life next quarter. Which residual security concern should remain explicitly tracked after remediation?

  1. A supported dependency could introduce a regression during its next patch.
  2. An unannounced upstream component abandonment can still shorten expected support coverage.
  3. Component manifests may omit transitive packages that a release build downloads dynamically.
  4. A replacement component could require a new security approval from procurement.

Explanation

Correct Answer

B:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: An unannounced upstream component abandonment can still shorten expected support coverage. This needs monitoring or a separate follow-up after implementing Map critical components, support windows and replacement milestones into the secure lifecycle and vendor evidence review.

Incorrect Answers

A:

Regression tests matter; the recorded residual is loss of upstream maintenance without an announcement.

C:

Inventory completeness is relevant yet distinct from a vendor abandoning an otherwise known dependency unexpectedly.

D:

Approval timing affects delivery; it does not describe the unexpected withdrawal of upstream support.

Question 202

An API team stores long-lived release tokens inside repository variables copied into forked pull-request jobs. Which response should the senior security engineer prioritize?

  1. Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.
  2. Use a single permanent deployment secret for all branches
  3. Expose production tokens to untrusted forked pull requests to keep CI fast
  4. Review release tags but leave attacker-controlled jobs able to print secrets

Explanation

Correct Answer

A:

The case shows: An API team stores long-lived release tokens inside repository variables copied into forked pull-request jobs. The preferred intervention—Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions—directly corrects that deficiency. The security reason is that untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

B:

Selecting 'Use a single permanent deployment secret for all branches' would not be the best response to this case. It may affect an adjacent security task, but it does not supply the complete boundary-specific intervention demanded by these facts. The actual gap is: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. The more defensible control is Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

C:

Selecting 'Expose production tokens to untrusted forked pull requests to keep CI fast' would not be the best response to this case. It may affect an adjacent security task, but it does not supply the complete boundary-specific intervention demanded by these facts. The actual gap is: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. The more defensible control is Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

D:

Selecting 'Review release tags but leave attacker-controlled jobs able to print secrets' would not be the best response to this case. This focuses on only a portion of the workflow or leaves the decisive control or evidence gap in place. The actual gap is: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. The more defensible control is Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

Question 203

An API team stores long-lived release tokens inside repository variables copied into forked pull-request jobs. Which explanation best identifies the security failure implied by these facts?

  1. Repository workflow variables are private to the build even if forked code executes
  2. A long-lived shared token gives stronger attribution than workload identity
  3. Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result.
  4. A successful CI check proves no secrets were leaked

Explanation

Correct Answer

C:

The observed facts point to the causal security principle: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. This is why the proportionate implementation response is restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions. The other answers either invent additional facts or mistake documentation or an adjacent safeguard for the actual cause.

Incorrect Answers

A:

The statement 'Repository workflow variables are private to the build even if forked code executes' does not explain the observed exposure. It ascribes the exposure to a different or unsupported cause instead of the failing trust, lifecycle, data, or inspection boundary identified in the facts. The evidence instead supports: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. This distinction determines why restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

B:

The statement 'A long-lived shared token gives stronger attribution than workload identity' does not explain the observed exposure. It ascribes the exposure to a different or unsupported cause instead of the failing trust, lifecycle, data, or inspection boundary identified in the facts. The evidence instead supports: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. This distinction determines why restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

D:

The statement 'A successful CI check proves no secrets were leaked' does not explain the observed exposure. It incorrectly treats a proxy, credential, or partial control as interchangeable with the missing evidence or authorization check. The evidence instead supports: Untrusted fork code can exfiltrate inherited secrets before a deployment approval process sees the result. This distinction determines why restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

Question 204

An API team stores long-lived release tokens inside repository variables copied into forked pull-request jobs. What result would demonstrate that the principal risk has been addressed?

  1. A token used by one project can deploy another
  2. A fork job reads the deployment token
  3. A malicious test pull request cannot read deploy credentials and approved builds use attributable ephemeral tokens.
  4. An untrusted pull request emits valid cloud API calls with production credentials

Explanation

Correct Answer

C:

The decisive acceptance evidence is: A malicious test pull request cannot read deploy credentials and approved builds use attributable ephemeral tokens. It demonstrates that the intervention—Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions—works in the scenario, rather than showing only a report, nominal configuration, or absence of alerts. An adverse test result would require remediation, not signoff.

Incorrect Answers

A:

Observing 'A token used by one project can deploy another' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A malicious test pull request cannot read deploy credentials and approved builds use attributable ephemeral tokens. That measures the actual result of restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

B:

Observing 'A fork job reads the deployment token' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A malicious test pull request cannot read deploy credentials and approved builds use attributable ephemeral tokens. That measures the actual result of restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

D:

Observing 'An untrusted pull request emits valid cloud API calls with production credentials' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A malicious test pull request cannot read deploy credentials and approved builds use attributable ephemeral tokens. That measures the actual result of restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

Question 205

An API team stores long-lived release tokens inside repository variables copied into forked pull-request jobs. Even if the primary action succeeds, which specific risk may remain?

  1. A protected deployment stage could still use more cloud permissions than its release job requires.
  2. A token-expiry setting may prematurely interrupt a legitimate long-running CI build.
  3. A release pipeline could trust an outdated branch-protection rule during a repository migration.
  4. A compromised approved build runner may still misuse short-lived credentials during its valid window.

Explanation

Correct Answer

D:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: A compromised approved build runner may still misuse short-lived credentials during its valid window. This needs monitoring or a separate follow-up after implementing Restrict token exposure to trusted protected stages, issue short-lived scoped workload identities, and audit CI job permissions.

Incorrect Answers

A:

Excess privileges warrant review, but the specific residual is compromise of an otherwise approved runner while its temporary credentials remain valid.

B:

Short sessions require handling; this is availability friction, not unauthorized activity from an infected trusted runner.

C:

Rule drift can weaken approvals, but the keyed scenario assumes the runner itself is compromised despite an approved workflow.

Question 206

A large insurer labels a database encrypted but allows data exports over unapproved file-sharing routes without classification or data discovery. Which response should the senior security engineer prioritize?

  1. Keep all export paths open because source data are encrypted at rest
  2. Require a signed annual user pledge instead of inspecting external transfers
  3. Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.
  4. Add a classification label but never enforce outbound policy

Explanation

Correct Answer

C:

The case shows: A large insurer labels a database encrypted but allows data exports over unapproved file-sharing routes without classification or data discovery. The preferred intervention—Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations—directly corrects that deficiency. The security reason is that encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

A:

Selecting 'Keep all export paths open because source data are encrypted at rest' would not be the best response to this case. It may affect an adjacent security task, but it does not supply the complete boundary-specific intervention demanded by these facts. The actual gap is: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. The more defensible control is Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

B:

Selecting 'Require a signed annual user pledge instead of inspecting external transfers' would not be the best response to this case. This focuses on only a portion of the workflow or leaves the decisive control or evidence gap in place. The actual gap is: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. The more defensible control is Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

D:

Selecting 'Add a classification label but never enforce outbound policy' would not be the best response to this case. This focuses on only a portion of the workflow or leaves the decisive control or evidence gap in place. The actual gap is: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. The more defensible control is Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

Question 207

A large insurer labels a database encrypted but allows data exports over unapproved file-sharing routes without classification or data discovery. Which statement correctly distinguishes the observed control weakness?

  1. At-rest encryption authorizes arbitrary data export
  2. Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows.
  3. A sensitive label alone prevents every unapproved upload
  4. Approved user identity guarantees that destination accounts are sanctioned

Explanation

Correct Answer

B:

The observed facts point to the causal security principle: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. This is why the proportionate implementation response is implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations. The other answers either invent additional facts or mistake documentation or an adjacent safeguard for the actual cause.

Incorrect Answers

A:

The statement 'At-rest encryption authorizes arbitrary data export' does not explain the observed exposure. It ascribes the exposure to a different or unsupported cause instead of the failing trust, lifecycle, data, or inspection boundary identified in the facts. The evidence instead supports: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. This distinction determines why implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

C:

The statement 'A sensitive label alone prevents every unapproved upload' does not explain the observed exposure. The absolute conclusion claims a guarantee that the scenario and the technical trust boundary do not support. The evidence instead supports: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. This distinction determines why implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

D:

The statement 'Approved user identity guarantees that destination accounts are sanctioned' does not explain the observed exposure. The absolute conclusion claims a guarantee that the scenario and the technical trust boundary do not support. The evidence instead supports: Encryption at rest does not govern data leaving the system through authorized but unsafe export workflows. This distinction determines why implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

Question 208

A large insurer labels a database encrypted but allows data exports over unapproved file-sharing routes without classification or data discovery. How should the organization validate the intended security outcome?

  1. A tagged record leaves through an unapproved sharing link
  2. A transfer is permitted even when its destination tenant is personal
  3. DLP tests succeed only on one file extension
  4. A controlled classified-record export is blocked or justified by policy while permitted business data flows succeed.

Explanation

Correct Answer

D:

The decisive acceptance evidence is: A controlled classified-record export is blocked or justified by policy while permitted business data flows succeed. It demonstrates that the intervention—Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations—works in the scenario, rather than showing only a report, nominal configuration, or absence of alerts. An adverse test result would require remediation, not signoff.

Incorrect Answers

A:

Observing 'A tagged record leaves through an unapproved sharing link' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A controlled classified-record export is blocked or justified by policy while permitted business data flows succeed. That measures the actual result of implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

B:

Observing 'A transfer is permitted even when its destination tenant is personal' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A controlled classified-record export is blocked or justified by policy while permitted business data flows succeed. That measures the actual result of implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

C:

Observing 'DLP tests succeed only on one file extension' would not prove that the proposed security fix succeeded. This is a proxy metric or adverse observation; it does not test both the intended security boundary and the permitted business function. To accept the remediation, the test must demonstrate: A controlled classified-record export is blocked or justified by policy while permitted business data flows succeed. That measures the actual result of implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

Question 209

A large insurer labels a database encrypted but allows data exports over unapproved file-sharing routes without classification or data discovery. Which continuing exposure should not be dismissed by the response team?

  1. An authorized employee could incorrectly classify a confidential document as public.
  2. New file formats or encoded payloads can evade classifiers not tested against those transformations.
  3. A file transfer could be encrypted end to end, obscuring content from a network-only sensor.
  4. A sanctioned file-sharing tenant may be granted broader access than the individual user's contract permits.

Explanation

Correct Answer

B:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: New file formats or encoded payloads can evade classifiers not tested against those transformations. This needs monitoring or a separate follow-up after implementing Implement classification-driven discovery and DLP across endpoints and transfer paths, and enforce allowed destinations.

Incorrect Answers

A:

Classification errors require safeguards, but the intended remaining evasion uses encoded or novel formats outside tested DLP recognizers.

C:

Visibility is a legitimate concern; however the specific continuing issue concerns classifier coverage for transformations and encodings.

D:

Tenant authorization should be checked; that is a separate access-policy gap rather than a file-format evasion.

Question 210

A hybrid organization sends firewall alerts to a central SIEM but omits authentication events from cloud identity services, creating a blind spot during token theft. Which implementation decision addresses the primary problem without overreaching?

  1. Place identity and control-plane telemetry beside network evidence with synchronized timestamps and retention requirements.
  2. Rely solely on endpoint antivirus when cloud tokens are stolen
  3. Treat a successful network TLS session as sufficient attribution
  4. Add more firewall packet alerts without enabling cloud identity auditing

Explanation

Correct Answer

A:

The case shows: A hybrid organization sends firewall alerts to a central SIEM but omits authentication events from cloud identity services, creating a blind spot during token theft. The preferred intervention—Place identity and control-plane telemetry beside network evidence with synchronized timestamps and retention requirements—directly corrects that deficiency. The security reason is that network inspection does not reveal all attacks using valid federated tokens or administrative cloud APIs. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

B:

Selecting 'Rely solely on endpoint antivirus when cloud tokens are stolen' would not be the best response to this case. This treats a label, assertion, metric, or inherited trust as sufficient evidence, rather than enforcing the missing control at the security boundary. The actual gap is: Network inspection does not reveal all attacks using valid federated tokens or administrative cloud APIs. The more defensible control is Place identity and control-plane telemetry beside network evidence with synchronized timestamps and retention requirements.

C:

Selecting 'Treat a successful network TLS session as sufficient attribution' would not be the best response to this case. It may affect an adjacent security task, but it does not supply the complete boundary-specific intervention demanded by these facts. The actual gap is: Network inspection does not reveal all attacks using valid federated tokens or administrative cloud APIs. The more defensible control is Place identity and control-plane telemetry beside network evidence with synchronized timestamps and retention requirements.

D:

Selecting 'Add more firewall packet alerts without enabling cloud identity auditing' would not be the best response to this case. This focuses on only a portion of the workflow or leaves the decisive control or evidence gap in place. The actual gap is: Network inspection does not reveal all attacks using valid federated tokens or administrative cloud APIs. The more defensible control is Place identity and control-plane telemetry beside network evidence with synchronized timestamps and retention requirements.

CompTIA SecurityX (CAS-005) Practice Tests

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