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Certified Information Systems Security Professional CISSP Practice Test 42

Question 410

An analyst closes the banner-based finding after verifying a backported vendor patch. What future risk should be managed?

  1. New exposure paths, configuration changes or vendor revisions may invalidate the exception and require reassessment.
  2. Every future alert with the same CVE must be ignored on all device models.
  3. The original scanner score is legal proof that exploitation occurred.
  4. A confirmed false positive must never be recorded in the exception register.

Explanation

Correct Answer

A:

A point-in-time false positive decision is contingent on specific facts and controls.

Incorrect Answers

B:

Patch status and exposure vary across versions, instances and configurations.

C:

Severity metadata does not establish observed compromise.

D:

Traceable findings and justified decisions aid future reevaluation.

Question 411

Which report evidence BEST supports a defensible false-positive closure?

  1. A note that 'everyone knows this finding is wrong'.
  2. A screenshot showing a low overall scanner score.
  3. Document the scanner signature, affected component, vendor backport evidence, running configuration and validation result.
  4. The purchase date of the affected appliance.

Explanation

Correct Answer

C:

This ties the decision to the actual vulnerable behavior and implementation state.

Incorrect Answers

A:

Unattributed consensus does not support reproducible assessment.

B:

Aggregate scoring says little about whether this specific finding is valid.

D:

Age alone cannot establish installed code or exploit conditions.

Question 412

A red team finds a way to obtain restricted data but only reports the number of phishing emails sent. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Measure red-team success by the number of phishing emails dispatched rather than attack objectives reached.
  2. Report only the number of discovered domains and never attempt authorized objective-based detection evaluation.
  3. Copy restricted customer records as proof of exploitation beyond the approved data-handling scope.
  4. Assess attack objectives and demonstrated business impact rather than activity volume alone.

Explanation

Correct Answer

D:

Adversary simulation should test whether defenses prevent or detect meaningful attack paths. A realistic red exercise requires safe handling of any sensitive data encountered.

Incorrect Answers

A:

Activity volume does not establish whether important business defenses were bypassed.

B:

Reconnaissance counts cannot demonstrate meaningful impact or defense effectiveness.

C:

A realistic exercise still must respect safety and sensitive evidence limits.

Question 413

The organization implemented the response to this scenario: A red team finds a way to obtain restricted data but only reports the number of phishing emails sent. The approved response was: Assess attack objectives and demonstrated business impact rather than activity volume alone. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Sending more simulated phishing messages guarantees the red team achieved a higher business-risk impact.
  2. Finding one initial foothold automatically proves every downstream target can be compromised.
  3. An adversary exercise may retain real protected data without constraints if the outcome is technically interesting.
  4. A realistic red exercise requires safe handling of any sensitive data encountered.

Explanation

Correct Answer

D:

Adversary simulation should test whether defenses prevent or detect meaningful attack paths. The report traces initial access to a tested objective, detections, and authorized impact limits.

Incorrect Answers

A:

Attempts and demonstrated objectives are separate outcome measures.

B:

An attack path requires bounded evidence at each relevant step.

C:

Legal authorization and data minimization still apply during simulation.

Question 414

Management implemented a response after this event: A red team finds a way to obtain restricted data but only reports the number of phishing emails sent. The response was: Assess attack objectives and demonstrated business impact rather than activity volume alone. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. The report lists 20,000 attack messages but no detection gaps or business objective outcomes.
  2. The report traces initial access to a tested objective, detections, and authorized impact limits.
  3. The team shows a screenshot of a phished account without authorized evidence of the planned protected data objective.
  4. Analysts declare success after collecting unrestricted personal records contrary to engagement conditions.

Explanation

Correct Answer

B:

The report traces initial access to a tested objective, detections, and authorized impact limits. Adversary simulation should test whether defenses prevent or detect meaningful attack paths.

Incorrect Answers

A:

Volume alone provides no demonstrable security-control assessment.

C:

Initial access is not proof of the defined attack target.

D:

Uncontrolled evidence handling undermines an otherwise useful test.

Question 415

A red team and blue team repeat the same attack without exchanging detection gaps afterward. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Keep offensive and defensive teams siloed, repeating the same attack without discussing detection failures.
  2. Publish the red team’s payload privately but never update or validate defensive alert logic.
  3. Declare the blue team effective because it attended a tabletop discussion without replaying the missed technique.
  4. Run collaborative purple-team feedback to improve detections and then retest control outcomes.

Explanation

Correct Answer

D:

Exercises provide higher value when offensive findings inform defensive improvements. An improved detection rule may still miss variants and needs adversarial regression.

Incorrect Answers

A:

An exercise without feedback cannot drive correction and retesting.

B:

Sharing artifacts alone does not improve the defender’s detection outcome.

C:

Attendance cannot establish operational detection or prevention improvement.

Question 416

The organization implemented the response to this scenario: A red team and blue team repeat the same attack without exchanging detection gaps afterward. The approved response was: Run collaborative purple-team feedback to improve detections and then retest control outcomes. Which statement MOST accurately identifies a remaining risk or constraint?

  1. An improved detection rule may still miss variants and needs adversarial regression.
  2. One successfully detected replay means every variant of the technique will always be detected.
  3. A purple team needs no red-team authorization because members work for the same organization.
  4. A new detection rule is proven effective solely by its publication in the rule repository.

Explanation

Correct Answer

A:

Exercises provide higher value when offensive findings inform defensive improvements. A repeat injection is detected or blocked with measured response improvements.

Incorrect Answers

B:

Adversaries can change encodings, behavior and timing, requiring regression coverage.

C:

Collaborative testing still requires approved scope and safety rules.

D:

Implementation and real alert behavior require exercise-based confirmation.

Question 417

Management implemented a response after this event: A red team and blue team repeat the same attack without exchanging detection gaps afterward. The response was: Run collaborative purple-team feedback to improve detections and then retest control outcomes. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. A repeat injection is detected or blocked with measured response improvements.
  2. The team posts a new signature but never reruns the attack and no corresponding alert is observed.
  3. Both teams agree on an improvement memo while the repeated technique still goes undetected.
  4. A replay triggers an alert only when a developer manually injects an artificial event rather than the real relevant telemetry.

Explanation

Correct Answer

A:

A repeat injection is detected or blocked with measured response improvements. Exercises provide higher value when offensive findings inform defensive improvements.

Incorrect Answers

B:

Rule publication does not demonstrate a closed detection gap.

C:

Meeting agreement is not measurable defensive effectiveness.

D:

Synthetic rule triggering alone may not demonstrate operational coverage.

Question 418

A team only tests deployed HTTP behavior and misses unsafe file-handling code in unused branches. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Use only deployed HTTP black-box testing to assess code paths that cannot be reached during a test run.
  2. Rely exclusively on a static analyzer and assume all exploitable runtime conditions are therefore covered.
  3. Combine source-focused security review or SAST with runtime tests aligned to threat models.
  4. Eliminate security testing for unexecuted code, assuming it can never become reachable in a later release.

Explanation

Correct Answer

C:

Static and dynamic testing reveal different classes of defects and coverage gaps. Static hits may be false positives; runtime tests can miss unreachable paths.

Incorrect Answers

A:

DAST misses source-only or dormant code defects without complementary review.

B:

Static tests cannot simulate every deployed authorization or configuration behavior.

D:

Future features can expose dormant unsafe paths; source-level assurance still matters.

Question 419

The organization implemented the response to this scenario: A team only tests deployed HTTP behavior and misses unsafe file-handling code in unused branches. The approved response was: Combine source-focused security review or SAST with runtime tests aligned to threat models. Which statement MOST accurately identifies a remaining risk or constraint?

  1. SAST guarantees every reported issue can be exploited in the currently deployed service.
  2. Static hits may be false positives; runtime tests can miss unreachable paths.
  3. DAST automatically analyzes every unexecuted branch and dependency even without triggering them.
  4. Passing both SAST and DAST eliminates the need for threat-model-informed test selection.

Explanation

Correct Answer

B:

Static and dynamic testing reveal different classes of defects and coverage gaps. A source-only vulnerability is found and an exploitable runtime path is confirmed separately.

Incorrect Answers

A:

Static findings may lack reachability or represent false positives.

C:

Dynamic tests exercise observed runtime behavior, not all source paths.

D:

Tool coverage remains incomplete and should track architecture and attack context.

Question 420

Management implemented a response after this event: A team only tests deployed HTTP behavior and misses unsafe file-handling code in unused branches. The response was: Combine source-focused security review or SAST with runtime tests aligned to threat models. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. DAST reports no vulnerabilities while a direct source review reveals unchecked unsafe file operations.
  2. SAST flags many patterns but no representative runtime abuse case is verified or triaged.
  3. The pipeline records both tool names without showing which source-only and live paths were exercised.
  4. A source-only vulnerability is found and an exploitable runtime path is confirmed separately.

Explanation

Correct Answer

D:

A source-only vulnerability is found and an exploitable runtime path is confirmed separately. Static and dynamic testing reveal different classes of defects and coverage gaps.

Incorrect Answers

A:

Runtime-only success does not prove unexecuted code is safe.

B:

Static hits alone do not establish exploitable operational outcomes.

C:

A checklist of tools is not tested coverage evidence.

Certified Information Systems Security Professional (CISSP) Practice Tests

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