Question 90
An immediate process decision is needed for the following concern: A restored server passes a boot test but its business transactions fail integrity checks. What response coordination or restriction step should take priority?
- Compare application transactions against known-good reconciliation results
- Keep the server in a restricted validation segment until data integrity passes
- Escalate the case for scoped investigation under the critical-asset rule
- Reconcile data, test dependent services and obtain application-owner acceptance
Explanation
Correct Answer
B:Controlled access prevents unreliable service from affecting production users; this protective or assignment decision directly addresses what recovery validation must include while response governance is still active.
Incorrect Answers
A:Boot success does not prove that business data and dependent workflows remain correct; the goal is immediate response coordination for what recovery validation must include. Investigation alone does not control current conditions.
C:Preserving an active investigation prevents premature closure of a high-impact event; the relevant condition for that step is what triage must establish before closure, which is not shown for what recovery validation must include.
D:Recovery completes only when usable and trusted business functionality returns; when judging what recovery validation must include, corrective follow-through follows initial protection; this is instead procedural correction.
Question 91
Response staff seek a controlled first step after this problem: A team treats an ISO/IEC 27035 guideline as proof that its incident response controls were implemented. Which immediate assignment, safeguard or coordination decision is justified?
- Close documented gaps with exercised procedures and retained results
- Flag the reference for governance correction without abandoning active response procedures
- Commission a control effectiveness review rather than declaring compliance
- Inspect playbook tests, incident records and assigned responsibilities
Explanation
Correct Answer
C:Independent evaluation reveals untested steps before they are relied upon; the immediate coordination decision concerns the gap between guidance adoption and operational evidence; it keeps the response process under explicit control.
Incorrect Answers
A:Corrective evidence supports defensible claims about operational readiness; the requirement concerns the gap between guidance adoption and operational evidence, so corrective follow-through follows initial protection.
B:A citation update must not interrupt evidence preservation during a live incident; this serves whether cited incident-response guidance is current, whereas the requested result is immediate response coordination involving the gap between guidance adoption and operational evidence.
D:Actual execution records demonstrate implementation where a citation to guidance alone does not; the case needs immediate response coordination addressing the gap between guidance adoption and operational evidence; investigation alone does not control current conditions.
Question 92
An improvement plan must address recurrence after this case: Night-shift responders repeatedly miss handoffs for unresolved lateral-movement cases. What should the owner add to the normal control review to reduce recurrence?
- Compare shift-change tickets against active incident action logs
- Mandate a minimum handoff checklist and acknowledged ownership transfer
- Use containment time, detection lag, evidence quality and recurrence together
- Create an ordered outstanding-actions list with deadlines and evidence links
- Use a formal shift handoff with a current incident commander
Explanation
Correct Answer
B:Standardized continuity reduces delays during overnight escalation; it makes the lesson about the missing continuity of incident response part of normal operations.
Incorrect Answers
A:Unassigned tasks and incomplete status fields show where ownership information was lost; for the missing continuity of incident response, an investigation is not recurrence prevention; readiness improvement remains necessary.
C:Balanced metrics discourage speed at the expense of correctness; the other incident centers on whether speed metrics reward poor incident decisions, not this readiness improvement question about the missing continuity of incident response.
D:A verified handoff enables the incoming team to act without recreating the timeline; case recovery is not future-risk control in the decision about the missing continuity of incident response.
E:Explicit transfer retains command responsibility while the investigation continues; the case needs readiness improvement addressing the missing continuity of incident response; one-time protection is not durable prevention.
Question 93
The response coordinator tests a weakness described in these records: A responder removes one malicious executable but leaves its service configuration and remote credentials active. What case-specific check would establish how this response procedure failed?
- Review closed case records for corrective actions and unresolved causal factors
- Disable malicious services and revoke affected secrets during controlled containment
- Track root-cause remediation as a required closure dependency
- Examine service configuration, scheduled starts and account-use records
Explanation
Correct Answer
D:Persistence and stolen credentials can sustain access after one file is deleted; that check tests whether eradication removed the attack's persistence without assuming that a policy citation alone proves operational compliance.
Incorrect Answers
A:A complete lessons-learned record should identify why controls failed or succeeded; this serves what post-incident learning is missing, whereas the requested result is process validation involving whether eradication removed the attack's persistence.
B:Blocking execution and access paths reduces the chance of immediate re-entry; the requirement concerns whether eradication removed the attack's persistence, so immediate protection does not substantiate findings.
C:Technical closure should include all enabling weaknesses, not just file removal; the goal is process validation for whether eradication removed the attack's persistence. Prevention is not incident verification.
Question 94
A documented handling problem requires corrective follow-through: A SOAR workflow deletes suspect cloud instances as soon as a high-severity alert appears, destroying short-lived evidence. What corrective record or operational change resolves this process weakness?
- Repair the workflow callback and re-run an idempotent status check
- Use preproduction simulation and privileged-action guardrails for playbooks
- Rebuild the workflow with snapshots, approvals and tested rollback
- Disable automatic termination until approved forensic capture succeeds
Explanation
Correct Answer
C:Sequenced response preserves investigation value before cleanup; the affected handling process should be validated against whether destructive automation has preservation safeguards after the change.
Incorrect Answers
A:Idempotency avoids multiple side effects when a status update is retried; it is meant to address why orchestration status differs from control state, not procedural correction for whether destructive automation has preservation safeguards.
B:Validation limits damage from poorly scoped automated response; for whether destructive automation has preservation safeguards, future hardening is not current-state recovery; procedural correction remains necessary.
D:A safety gate protects evidence while still allowing non-destructive isolation; the goal is procedural correction for whether destructive automation has preservation safeguards. Temporary protection does not complete correction.
Question 95
A tabletop exercise is being updated using the following real-world failure: A response plan cites NIST SP 800-61 Revision 2 as the latest guidance in a 2026 audit. Which improvement should be tracked through the next control-assurance cycle?
- Link each guidance requirement to an accountable control and test frequency
- Schedule periodic review of external standard references and change notices
- Check the publication revision and supersession notice in NIST CSRC
- Update the plan's references and map its workflow to CSF 2.0 functions
Explanation
Correct Answer
B:Document owners can update playbooks when authoritative guidance changes; the control owner can test whether this reduces repeat conditions affecting whether cited incident-response guidance is current.
Incorrect Answers
A:Traceability makes standards mappings measurable; the relevant condition for that step is the gap between guidance adoption and operational evidence, which is not shown for whether cited incident-response guidance is current.
C:NIST finalized Revision 3 in April 2025, replacing the 2012 guide; the requirement concerns whether cited incident-response guidance is current, so an investigation is not recurrence prevention.
D:Revision 3 is a CSF 2.0 community profile rather than a mere renumbering of the old phase list; the goal is readiness improvement for whether cited incident-response guidance is current. Case recovery is not future-risk control.
Question 96
An improvement plan must address recurrence after this case: A service provider receives an alert but its contract lacks clear escalation and evidence-retention responsibilities. What should the owner add to the normal control review to reduce recurrence?
- Compare contract clauses, contact trees and tested vendor response procedures
- Record shared responsibilities and preserve both parties' case artifacts
- Treat infrastructure changes as triggers for playbook maintenance
- Include notification SLAs, evidence access and rehearsal requirements in agreements
Explanation
Correct Answer
D:Specific obligations reduce dependency ambiguity during incidents; it makes the lesson about whether third-party handoffs are executable part of normal operations.
Incorrect Answers
A:Missing duties can delay notification, collection and containment across boundaries; for whether third-party handoffs are executable, an investigation is not recurrence prevention; readiness improvement remains necessary.
B:A unified timeline supports investigation despite separate infrastructures; the requirement concerns whether third-party handoffs are executable, so case recovery is not future-risk control.
C:Change-driven review prevents stale emergency instructions; it is meant to address whether playbooks match current architecture, not readiness improvement for whether third-party handoffs are executable.
Question 97
The owner is reconciling responder actions with the approved plan after: An alert involving payment-card data was categorized low because only one host was affected. Which corrective action restores reliable ownership, communication or decision flow?
- Reassess scope and record the corrected severity and response deadlines
- Include data sensitivity and regulatory triggers in triage scoring
- Escalate under the high-impact data-exposure criteria
- Introduce quality checks and track repeat compromise after closure
Explanation
Correct Answer
A:An impact-driven case update fixes the prioritization error before closure; the affected handling process should be validated against whether incident priority reflects business impact after the change.
Incorrect Answers
B:Impact criteria prevent host-count-only severity mistakes; future hardening is not current-state recovery in the decision about whether incident priority reflects business impact.
C:Severity-based routing brings in the correct legal and technical decision makers early; the case needs procedural correction addressing whether incident priority reflects business impact; temporary protection does not complete correction.
D:Outcome measures reveal cases prematurely marked resolved; it is meant to address whether speed metrics reward poor incident decisions, not procedural correction for whether incident priority reflects business impact.
Question 98
An immediate process decision is needed for the following concern: Two analysts independently investigate the same suspicious endpoint and each issues conflicting containment instructions. What response coordination or restriction step should take priority?
- Assign a single incident commander and freeze contradictory changes
- Reconcile both timelines and publish one approved response plan
- Use a formal shift handoff with a current incident commander
- Audit ticket ownership changes and responder action timestamps
Explanation
Correct Answer
A:Central coordination prevents simultaneous actions from damaging the investigation; this protective or assignment decision directly addresses how incident ownership and assignments broke down while response governance is still active.
Incorrect Answers
B:A consolidated record restores situational awareness and defines next responsibilities; corrective follow-through follows initial protection in the decision about how incident ownership and assignments broke down.
C:Explicit transfer retains command responsibility while the investigation continues; that method could help with the missing continuity of incident response; the immediate response coordination decision here involves how incident ownership and assignments broke down.
D:The case history reveals parallel work and the absence of an authoritative incident owner; when judging how incident ownership and assignments broke down, investigation alone does not control current conditions; this is instead process validation.
Question 99
After technical restoration, responders document the weakness exposed by: A payroll server shows a new administrator login immediately before confidential reports appeared on an unknown share. Which long-term control would reduce exposure to this specific pattern?
- Tune detection exceptions to scanner identity and approved maintenance windows
- Suspend the suspect privileged session while preserving its session identifiers
- Revalidate privileged grants and remove unauthorized share access
- Correlate privileged sign-in records with file-share audit events
- Alert on abnormal privileged logins followed by bulk file-share access
Explanation
Correct Answer
E:A behavioral correlation catches the combined access pattern rather than either event alone; it closes a repeatable gap revealed by whether a security event involved unauthorized access without removing useful monitoring.
Incorrect Answers
A:A narrowly scoped suppression reduces noise without hiding scans from unapproved hosts; that method could help with whether an alert is a confirmed incident; the readiness improvement decision here involves whether a security event involved unauthorized access.
B:Revoking the active access path limits further disclosure without discarding the account activity already logged; the case needs readiness improvement addressing whether a security event involved unauthorized access; one-time protection is not durable prevention.
C:Eliminating the access path addresses the control failure before sensitive workflows resume; when judging whether a security event involved unauthorized access, case recovery is not future-risk control; this is instead procedural correction.
D:The joined timeline can connect an identity, access to protected files, and the suspicious destination; for whether a security event involved unauthorized access, an investigation is not recurrence prevention; readiness improvement remains necessary.
Question 100
The organization needs to repair the response procedure after: A SIEM identifies a phishing indicator but responders copy it manually between five security products. Which corrective action restores reliable ownership, communication or decision flow?
- Trigger an approved indicator-distribution playbook from the correlated alert
- Verify each downstream control acknowledged and applied the block
- Use tested SOAR integrations with access-scoped service identities
- Repair the workflow callback and re-run an idempotent status check
Explanation
Correct Answer
B:Execution evidence distinguishes a submitted workflow from actual protection; the affected handling process should be validated against where manual coordination delays indicator response after the change.
Incorrect Answers
A:Automated propagation shortens the delay while maintaining change records; the goal is procedural correction for where manual coordination delays indicator response. Temporary protection does not complete correction.
C:Controlled integrations reduce transcription errors without granting unnecessary privileges; the case needs procedural correction addressing where manual coordination delays indicator response; future hardening is not current-state recovery.
D:Idempotency avoids multiple side effects when a status update is retried; this serves why orchestration status differs from control state, whereas the requested result is procedural correction involving where manual coordination delays indicator response.