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CompTIA CS0-003 Practice Test 96

Question 950

A police request asks for an entire employee mailbox unrelated to the suspected intrusion scope. What is the MOST appropriate analyst action based on the evidence?

  1. Restrict allegations and seek authorized legal guidance on attribution.
  2. Seek legal review and apply appropriate request scope and preservation.
  3. Provide verified integrity and chain-of-custody documentation before reliance.
  4. Coordinate release through legal and authorized law-enforcement liaison.

Explanation

Correct Answer

B:

External requests should not automatically override privacy and proportionality controls. Evaluate law-enforcement mailbox request scope.

Incorrect Answers

A:

Premature accusations risk unjustified harm and evidentiary distortion. It could help prevent premature incident suspect disclosure, but it would not evaluate law-enforcement mailbox request scope.

C:

Evidence integrity underpins future investigative and legal use. It would validate forensic transfer to investigator, but it would not evaluate law-enforcement mailbox request scope.

D:

Evidence disclosure needs lawful authority and chain-of-custody control. It could help route incident evidence to law enforcement properly, but it would not evaluate law-enforcement mailbox request scope.

Question 951

A case stays open for legal review a month after verified technical eradication. Which next step is MOST defensible for the security team?

  1. Normalize workload by complexity and relevant operational scope.
  2. Measure completed containment from appropriate start, not API submission.
  3. Track technical eradication and legal case closure as separate milestones.
  4. Flag the metric as limited and assess better event-onset evidence.

Explanation

Correct Answer

C:

Operational response time should not be conflated with administrative lifecycle. Distinguish technical eradication from case close.

Incorrect Answers

A:

Raw counts can penalize analysts handling complex incidents. That is relevant to incident response metric definitions, not to distinguish technical eradication from case close.

B:

Asynchronous action initiation is not achieved response outcome. It would report true automation containment completion time, but it would not distinguish technical eradication from case close.

D:

Detection-time metrics cannot be precise without a consistent true start. That is relevant to incident response metric definitions, not to distinguish technical eradication from case close.

Question 952

A public incident summary contains a precise attacker origin country based on VPN exit nodes. Which action BEST aligns with sound security operations?

  1. Separate confirmed infections from devices under investigation and state criteria.
  2. Publish a time-stamped revision with sources and prior-estimate explanation.
  3. Translate detection status into risk, recovery and resource choices in plain language.
  4. Remove unsupported location attribution and describe confirmed infrastructure only.

Explanation

Correct Answer

D:

VPN and cloud egress geography are poor indicators of the person's location. Avoid false attacker geography claim.

Incorrect Answers

A:

Indicator matches alone cannot establish full endpoint compromise. It would differentiate confirmed infections and suspected devices, but it would not avoid false attacker geography claim.

B:

Incident impact numbers often mature as accounting evidence becomes available. It could help revise executive incident loss estimate transparently, but it would not avoid false attacker geography claim.

C:

Senior decision makers need actionable context over tool terminology. That is relevant to evidence confidence in executive communication, not to avoid false attacker geography claim.

Question 953

A cross-company postmortem includes private customer identifiers in a slide deck intended for suppliers. Which response BEST addresses the security problem described?

  1. Redact or aggregate sensitive details for the approved external audience.
  2. Assess systemic process and control factors in a blameless evidence-led review.
  3. Coordinate updated legal retention rules and evidence-handling controls.
  4. Set owner, deadline, success measure and follow-up test for each action.

Explanation

Correct Answer

A:

Useful lessons can be shared without exposing affected individuals. Sanitize external postincident lessons report.

Incorrect Answers

B:

Individualized blame obscures defects that can cause repeat incidents. That is relevant to incident postmortem communication maturity, not to sanitize external postincident lessons report.

C:

Postincident governance findings can outlast initial technical closure. It would address new evidence retention obligation after incident, but it would not sanitize external postincident lessons report.

D:

Improvements require accountable execution and verification. It could help make postmortem recommendations measurable, but it would not sanitize external postincident lessons report.

Question 954

A managed provider and customer both assume the other will notify users after a breach. Which investigative or response action BEST fits the evidence?

  1. Establish a shared authorized event chronology with source attribution.
  2. Clarify contractual notification responsibility and obtain legal approval for actual notices.
  3. Distinguish provider infrastructure security from customer identity compromise.
  4. Share scoped relevant logs with approved confidentiality and access controls.

Explanation

Correct Answer

B:

Shared-response ambiguity can cause deadline failures. Resolve vendor-customer notification ownership.

Incorrect Answers

A:

Coordinated timeline reconciles cross-provider evidence while preserving provenance. That is relevant to response communication with external vendors, not to resolve vendor-customer notification ownership.

C:

Shared responsibility can yield tenant incidents without provider breach. It could help classify cloud provider versus tenant incident, but it would not resolve vendor-customer notification ownership.

D:

Third-party assistance does not justify unrestricted evidence disclosure. That is relevant to response communication with external vendors, not to resolve vendor-customer notification ownership.

Question 955

An executive compares alert counts between teams with different asset and logging coverage. What is the MOST appropriate analyst action based on the evidence?

  1. Record authorized exercise context without deleting the detection evidence.
  2. Compare source duplicates, true-positive yield and new telemetry coverage.
  3. Normalize volume by monitored population and source fidelity before comparison.
  4. Measure false negatives and true-positive yield against known incidents.

Explanation

Correct Answer

C:

Different observation scope makes raw counts misleading. Normalize SOC alert volume across teams.

Incorrect Answers

A:

Legitimate test alerts can demonstrate successful control coverage. It would classify red-team detection in SOC metrics, but it would not normalize SOC alert volume across teams.

B:

More alerts can reflect ingestion change rather than attacker activity. It could help interpret alert growth after SIEM integration, but it would not normalize SOC alert volume across teams.

D:

Low volume alone may indicate harmful detection suppression. It would verify detection quality after alert suppression, but it would not normalize SOC alert volume across teams.

Question 956

A SOC sees 500 denied requests against one web server but no backend execution. Which next step is MOST defensible for the security team?

  1. Report availability impact and data loss as separate dimensions.
  2. Report confirmed accessed records and separately state attempted enumeration.
  3. Evaluate host and tenant dependencies before limiting scope to one VM.
  4. Report attempted attack volume without claiming 500 compromised accounts.

Explanation

Correct Answer

D:

Request counts are not equivalent to successful compromise counts. Distinguish attack attempts from affected users.

Incorrect Answers

A:

Downtime does not necessarily imply permanent data loss. It could help separate outage duration from data-loss scope, but it would not distinguish attack attempts from affected users.

B:

Evidence-specific counts prevent exaggerated victim estimates. That is relevant to incident impact and scope classification, not to distinguish attack attempts from affected users.

C:

Shared infrastructure can broaden the potential blast radius. It would assess virtualization incident scope, but it would not distinguish attack attempts from affected users.

Question 957

A responder prepares to delete logs after the incident is contained despite an active legal hold. Which action BEST aligns with sound security operations?

  1. Preserve scoped evidence under legal guidance before any disposition.
  2. Engage legal and privacy decision owners to assess applicable deadlines and evidence.
  3. Describe the visibility limit and use bounded estimates only when evidence supports them.
  4. Provide verified data classes, impacted populations and incident chronology through approved counsel.

Explanation

Correct Answer

A:

Litigation or preservation duties can continue beyond technical containment. Prevent deletion of legally held incident logs.

Incorrect Answers

B:

Regulatory reporting requires jurisdiction-specific authorized judgment. It would activate legal breach notification assessment, but it would not prevent deletion of legally held incident logs.

C:

Missing telemetry prevents definitive no-access conclusions. It could help communicate unknown breach scope honestly, but it would not prevent deletion of legally held incident logs.

D:

Regulators need protected information impact, not just technical artifacts. That is relevant to regulatory and legal incident reporting, not to prevent deletion of legally held incident logs.

Question 958

A forensic timeline lists a log event that appears before the affected host booted. Which response BEST addresses the security problem described?

  1. Add verified artifact identifiers, affected system and collection context.
  2. Reconcile time zones, drift and source event identity before publishing.
  3. Qualify the statement as attempts pending successful access or execution evidence.
  4. Move to controlled evidence storage with custodian metadata and restricted access.

Explanation

Correct Answer

B:

Incorrect time normalization can produce impossible event sequences. Repair inconsistent incident chronology.

Incorrect Answers

A:

Reproducible technical evidence supports later validation. It would strengthen malware artifact incident report, but it would not repair inconsistent incident chronology.

C:

Failed authentication alone does not demonstrate lateral compromise. That is relevant to technical incident report evidence, not to repair inconsistent incident chronology.

D:

Reports should reference preserved artifacts with reliable provenance. It would preserve screenshot evidence traceability, but it would not repair inconsistent incident chronology.

Question 959

A response lead considers naming a suspect employee in public communications before a complete investigation. Which investigative or response action BEST fits the evidence?

  1. Provide verified integrity and chain-of-custody documentation before reliance.
  2. Seek legal review and apply appropriate request scope and preservation.
  3. Restrict allegations and seek authorized legal guidance on attribution.
  4. Coordinate release through legal and authorized law-enforcement liaison.

Explanation

Correct Answer

C:

Premature accusations risk unjustified harm and evidentiary distortion. Prevent premature incident suspect disclosure.

Incorrect Answers

A:

Evidence integrity underpins future investigative and legal use. It could help validate forensic transfer to investigator, but it would not prevent premature incident suspect disclosure.

B:

External requests should not automatically override privacy and proportionality controls. That is relevant to law enforcement and evidence disclosures, not to prevent premature incident suspect disclosure.

D:

Evidence disclosure needs lawful authority and chain-of-custody control. It could help route incident evidence to law enforcement properly, but it would not prevent premature incident suspect disclosure.

Question 960

A malware case stays open for 30 days after eradication while waiting on documentation. What is the MOST appropriate analyst action based on the evidence?

  1. Report response or containment time separately from administrative close time.
  2. Define MTTD from evidenced activity onset to confirmed detection and note coverage limits.
  3. Disclose population, severity distribution and exclusions for comparable metrics.
  4. Separate mean time to remediate from overall case administrative duration.

Explanation

Correct Answer

D:

Remediation effectiveness should not be hidden by paperwork timing. Report technical remediation time separately.

Incorrect Answers

A:

Different milestones answer different operational performance questions. That is relevant to detection and response timing kpis, not to report technical remediation time separately.

B:

Start-point consistency is necessary for meaningful detection time. It would calculate meaningful MTTD with event onset, but it would not report technical remediation time separately.

C:

Selection bias can distort performance trends. It could help prevent cherry-picked incident response KPI, but it would not report technical remediation time separately.


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