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CompTIA SecurityX CAS-005 Practice Test 13

Question 120

An insurance company trains a model on customer files and assumes the model cannot reveal memorized personal data because users see only generated text. Which follow-up uncertainty should be recorded in the risk register?

  1. Previously published model checkpoints may retain sensitive representations after a dataset is removed.
  2. The model could still give an inaccurate answer about policy without revealing memorized records.
  3. An internal user with authorized access might share an output in error.
  4. Reidentification could occur by combining several seemingly harmless outputs.

Explanation

Correct Answer

A:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: Previously published model checkpoints may retain sensitive representations after a dataset is removed. This needs monitoring or a separate follow-up after implementing Apply data minimization, access controls, privacy testing for memorization and extraction, and retention governance before deployment.

Incorrect Answers

B:

General correctness matters, but the specifically remaining privacy issue is sensitive representations in already published checkpoints.

C:

Human disclosure can occur, but it does not remove embedded memorized data from previously distributed model snapshots.

D:

Inference attacks deserve separate controls, while the keyed limitation is persistent private representations in released model versions.

Question 121

An enterprise copies a public LLM-generated hardening script directly into production because the output looks technically sophisticated. Which security action is the most defensible next step for this situation?

  1. Deploy generated hardening code directly because it passes syntax checks
  2. Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.
  3. Run a broad IAM-modifying script on production before testing rollback
  4. Approve all model-generated changes without human source review

Explanation

Correct Answer

B:

The case shows: An enterprise copies a public LLM-generated hardening script directly into production because the output looks technically sophisticated. The preferred intervention—Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes—directly corrects that deficiency. The security reason is that plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

A:

Selecting 'Deploy generated hardening code directly because it passes syntax checks' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. The more defensible control is Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

C:

Selecting 'Run a broad IAM-modifying script on production before testing rollback' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. The more defensible control is Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

D:

Selecting 'Approve all model-generated changes without human source review' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. The more defensible control is Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

Question 122

An enterprise copies a public LLM-generated hardening script directly into production because the output looks technically sophisticated. Which explanation best identifies the security failure implied by these facts?

  1. A syntactically valid policy cannot grant unintended permissions
  2. Automation provenance is unnecessary when code is created inside the enterprise
  3. Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence.
  4. Fluent AI explanations establish that a shell command is safe

Explanation

Correct Answer

C:

The observed facts point to the causal security principle: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. This is why the proportionate implementation response is require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes. The other answers either invent additional facts or mistake documentation or an adjacent safeguard for the actual cause.

Incorrect Answers

A:

The statement 'A syntactically valid policy cannot grant unintended permissions' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. This distinction determines why require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

B:

The statement 'Automation provenance is unnecessary when code is created inside the enterprise' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. This distinction determines why require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

D:

The statement 'Fluent AI explanations establish that a shell command is safe' 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: Plausible generated code can contain insecure defaults or hallucinated commands, and fluent wording is not reliability evidence. This distinction determines why require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

Question 123

An enterprise copies a public LLM-generated hardening script directly into production because the output looks technically sophisticated. What result would demonstrate that the principal risk has been addressed?

  1. The pipeline cannot distinguish approved from newly invented commands
  2. A controlled CI pipeline rejects an unsafe generated firewall rule and records human approval before rollout.
  3. A generated wildcard rule passes the release gate unchecked
  4. A malformed rollback leaves protected resources unreachable

Explanation

Correct Answer

B:

The decisive acceptance evidence is: A controlled CI pipeline rejects an unsafe generated firewall rule and records human approval before rollout. It demonstrates that the intervention—Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes—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 'The pipeline cannot distinguish approved from newly invented commands' would not prove that the proposed security fix succeeded. This documents missing evidence or an incomplete test, not a verified outcome that establishes the control has operated effectively. To accept the remediation, the test must demonstrate: A controlled CI pipeline rejects an unsafe generated firewall rule and records human approval before rollout. That measures the actual result of require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

C:

Observing 'A generated wildcard rule passes the release gate unchecked' 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 CI pipeline rejects an unsafe generated firewall rule and records human approval before rollout. That measures the actual result of require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

D:

Observing 'A malformed rollback leaves protected resources unreachable' 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 CI pipeline rejects an unsafe generated firewall rule and records human approval before rollout. That measures the actual result of require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

Question 124

An enterprise copies a public LLM-generated hardening script directly into production because the output looks technically sophisticated. Which continuing exposure should not be dismissed by the response team?

  1. New model versions can change generated behavior even when the user prompt is unchanged.
  2. A generated hardening rule might be overly restrictive and disrupt an approved workflow.
  3. A code dependency could later receive an exploitable security advisory.
  4. A human reviewer could overlook an unsafe wildcard in an otherwise approved change.

Explanation

Correct Answer

A:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: New model versions can change generated behavior even when the user prompt is unchanged. This needs monitoring or a separate follow-up after implementing Require code review, provenance, dependency checks, sandbox testing, and privileged execution approval for AI-generated changes.

Incorrect Answers

B:

Availability errors are caught by staged testing; the key longer-term uncertainty is changed model output after a model version update.

C:

Supply-chain maintenance is important, but this is not the same as nondeterministic code generation changing between versions.

D:

Review quality is a separate defense limitation, while the keyed risk follows model-version drift independent of prompt text.

Question 125

A helpdesk receives a convincing voice recording purporting to be the CFO requesting an urgent change to bank payment details. What is the best risk-informed control decision for this specific scenario?

  1. Approve the payment change because the voice sounds like the CFO
  2. Call back using a new number supplied inside the suspicious recording
  3. Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.
  4. Accept one employee's confirmation without independent payment-account controls

Explanation

Correct Answer

C:

The case shows: A helpdesk receives a convincing voice recording purporting to be the CFO requesting an urgent change to bank payment details. The preferred intervention—Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof—directly corrects that deficiency. The security reason is that realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

A:

Selecting 'Approve the payment change because the voice sounds like the CFO' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. The more defensible control is Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

B:

Selecting 'Call back using a new number supplied inside the suspicious recording' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. The more defensible control is Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

D:

Selecting 'Accept one employee's confirmation without independent payment-account controls' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. The more defensible control is Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

Question 126

A helpdesk receives a convincing voice recording purporting to be the CFO requesting an urgent change to bank payment details. Which statement correctly distinguishes the observed control weakness?

  1. Deepfake technology cannot support interactive conversations
  2. An attacker-supplied callback number is a trusted verification path
  3. Voice likeness is stronger identity proof than controlled dual authorization
  4. Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels.

Explanation

Correct Answer

D:

The observed facts point to the causal security principle: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. This is why the proportionate implementation response is use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof. The other answers either invent additional facts or mistake documentation or an adjacent safeguard for the actual cause.

Incorrect Answers

A:

The statement 'Deepfake technology cannot support interactive conversations' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. This distinction determines why use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

B:

The statement 'An attacker-supplied callback number is a trusted verification path' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. This distinction determines why use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

C:

The statement 'Voice likeness is stronger identity proof than controlled dual authorization' 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: Realistic AI-generated audio can spoof a person's identity and defeat informal approval channels. This distinction determines why use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

Question 127

A helpdesk receives a convincing voice recording purporting to be the CFO requesting an urgent change to bank payment details. Which finding is the strongest acceptance evidence for the recommended control?

  1. A forged voice succeeds in changing the payment bank account
  2. The second approver merely repeats details provided by the caller
  3. The approval record has no out-of-band identity verification
  4. A simulated deepfake request fails payment-change authorization until out-of-band identity and second approval are recorded.

Explanation

Correct Answer

D:

The decisive acceptance evidence is: A simulated deepfake request fails payment-change authorization until out-of-band identity and second approval are recorded. It demonstrates that the intervention—Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof—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 forged voice succeeds in changing the payment bank account' 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: A simulated deepfake request fails payment-change authorization until out-of-band identity and second approval are recorded. That measures the actual result of use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

B:

Observing 'The second approver merely repeats details provided by the caller' 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 simulated deepfake request fails payment-change authorization until out-of-band identity and second approval are recorded. That measures the actual result of use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

C:

Observing 'The approval record has no out-of-band identity verification' would not prove that the proposed security fix succeeded. This documents missing evidence or an incomplete test, not a verified outcome that establishes the control has operated effectively. To accept the remediation, the test must demonstrate: A simulated deepfake request fails payment-change authorization until out-of-band identity and second approval are recorded. That measures the actual result of use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

Question 128

A helpdesk receives a convincing voice recording purporting to be the CFO requesting an urgent change to bank payment details. What is the most directly relevant limitation of the immediate fix?

  1. A legitimate CFO may be unavailable for the predefined callback at the deadline.
  2. An employee might mistake an urgent real request for a generated recording.
  3. Compromised callback directories could undermine verification if not independently protected.
  4. The second approver might have a conflict of interest in the requested payment.

Explanation

Correct Answer

C:

The remedy cannot eliminate every downstream risk. The directly relevant remaining issue is: Compromised callback directories could undermine verification if not independently protected. This needs monitoring or a separate follow-up after implementing Use an independently established callback and dual-control verification, rather than treating voice similarity as identity proof.

Incorrect Answers

A:

Delay is a business continuity challenge, not the keyed scenario of malicious edits to a trusted callback directory.

B:

False positives may cause friction, but verification trust still depends on protecting the independent contact source.

D:

Approval independence matters, yet compromised callback records directly defeat the identity-verification channel.

Question 129

An internal AI chatbot exposes sensitive engineering designs to a third-party model endpoint without employees realizing their prompts are retained. What is the best risk-informed control decision for this specific scenario?

  1. Hide model-use disclosure while retaining uncontrolled third-party prompt storage
  2. Permit sensitive prompts so long as the connection uses TLS
  3. Classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.
  4. Scan only attached files, not prompts or model outputs, for secrets

Explanation

Correct Answer

C:

The case shows: An internal AI chatbot exposes sensitive engineering designs to a third-party model endpoint without employees realizing their prompts are retained. The preferred intervention—Classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy—directly corrects that deficiency. The security reason is that an AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. It is scoped to an enforceable control decision, unlike a policy label or unrelated improvement.

Incorrect Answers

A:

Selecting 'Hide model-use disclosure while retaining uncontrolled third-party prompt storage' 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. The more defensible control is Classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

B:

Selecting 'Permit sensitive prompts so long as the connection uses TLS' 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. The more defensible control is Classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

D:

Selecting 'Scan only attached files, not prompts or model outputs, for 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. The more defensible control is Classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

Question 130

An internal AI chatbot exposes sensitive engineering designs to a third-party model endpoint without employees realizing their prompts are retained. Which technical inference is supported by the described behavior?

  1. An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries.
  2. A third-party retention policy cannot affect client confidential information
  3. TLS makes the external model provider an authorized data processor
  4. Only downloadable files can disclose sensitive data to AI services

Explanation

Correct Answer

A:

The observed facts point to the causal security principle: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. This is why the proportionate implementation response is classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy. The other answers either invent additional facts or mistake documentation or an adjacent safeguard for the actual cause.

Incorrect Answers

B:

The statement 'A third-party retention policy cannot affect client confidential information' 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. This distinction determines why classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

C:

The statement 'TLS makes the external model provider an authorized data processor' 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. This distinction determines why classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

D:

The statement 'Only downloadable files can disclose sensitive data to AI services' 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: An AI service's input and retention arrangements can transfer confidential data beyond approved organizational boundaries. This distinction determines why classify and minimize prompt content, block prohibited external sharing with DLP, and publish enforceable model-usage policy.

CompTIA SecurityX (CAS-005) Practice Tests

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