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Isaca CISM Practice Test 65

Question 640

A business is preparing for ransomware and must choose between its latest backups and verified clean recovery points. After deployment, what ongoing oversight most directly keeps the requirement effective?

  1. Review recovery dependency maps after cloud architecture and provider changes
  2. Review backup immutability and restore success after new storage and threat changes
  3. Reassess recovery placement after cloud-region and legal changes
  4. Update notification playbooks after new contracts, insurers, or legal changes

Explanation

Correct Answer

B:

Ransomware defense depends on reliable copies.

Incorrect Answers

A:

Dependencies evolve faster than annual plans. It may help maintain testing multi-service disaster dependencies, whereas the stated continuing risk concerns planning clean restoration after destructive compromise.

C:

Recovery compliance can change with geography. It may help maintain recognizing nontechnical recovery constraints, whereas the stated continuing risk concerns planning clean restoration after destructive compromise.

D:

Obligations evolve across agreements and regions. It may help maintain coordinating overlapping reporting obligations, whereas the stated continuing risk concerns planning clean restoration after destructive compromise.

Question 641

A large enterprise has an incident classification table but no process for handling uncertain severity as new facts emerge. Which management approach best satisfies the primary requirement?

  1. Assign incident classification and declaration authority with backup escalation paths
  2. Define the incident triage, classification, and escalation process with legal notification triggers
  3. Permit documented reclassification with renewed escalation as impact evidence changes
  4. Create a centralized incident record of facts, evidence, decisions, and chronology

Explanation

Correct Answer

C:

Initial severity is provisional and should not freeze response authority.

Incorrect Answers

A:

Timely incident declaration requires a clearly accountable decision-maker. However, it does not make the decision needed for updating incident severity during investigation in this scenario.

B:

Consistent interpretation reduces late reporting. However, it does not make the decision needed for updating incident severity during investigation in this scenario.

D:

An incident record supports coordination, legal duties, and lessons learned. However, it does not make the decision needed for updating incident severity during investigation in this scenario.

Question 642

A large enterprise has an incident classification table but no process for handling uncertain severity as new facts emerge. Which concrete action would best operationalize the needed approach?

  1. Define triggers for reassessment, event logging, and notification of the incident command team
  2. Document severity triggers, responsible roles, alternates, and approval channels in the response plan
  3. Coordinate credential revocation, token invalidation, activity capture, and provider notification
  4. Define cross-plan activation triggers, dependencies, and recovery ownership with business teams

Explanation

Correct Answer

A:

Updated decisions need clear channels.

Incorrect Answers

B:

Explicit authority reduces delays during crises. That could support establishing crisis decision authority, but it does not implement the requested updating incident severity during investigation.

C:

Actions should limit continued access and preserve traceability. That could support preserving forensic evidence during supplier identity compromise, but it does not implement the requested updating incident severity during investigation.

D:

A shared framework clarifies handoffs. That could support aligning incident response with recovery and continuity, but it does not implement the requested updating incident severity during investigation.

Question 643

A large enterprise has an incident classification table but no process for handling uncertain severity as new facts emerge. Which evidence best demonstrates the intended business and security outcome?

  1. Simulate loss of the normal support portal and confirm provider engagement within the agreed escalation time
  2. Run a hunt-to-incident simulation and confirm the proper commander approves containment
  3. Deploy a controlled misconfiguration and confirm the new guardrail detects or blocks it
  4. Simulate a low-severity alert escalating into verified data exfiltration and confirm the new response tier activates

Explanation

Correct Answer

D:

The exercise tests severity changes under uncertainty.

Incorrect Answers

A:

A degraded-mode test proves resilience. This provides evidence for maintaining critical supplier emergency escalation, not proof of updating incident severity during investigation.

B:

The exercise validates the authorization boundary. This provides evidence for separating investigation from authorized response, not proof of updating incident severity during investigation.

C:

A realistic regression case validates improvement. This provides evidence for using root cause to choose lasting corrective action, not proof of updating incident severity during investigation.

Question 644

A large enterprise has an incident classification table but no process for handling uncertain severity as new facts emerge. Which recurring management review most directly addresses future drift?

  1. Update notification playbooks after new contracts, insurers, or legal changes
  2. Review untested business dependencies and update continuity plans after each drill
  3. Review false activations and missed escalations to recalibrate criteria
  4. Review late escalations and update thresholds when classification mistakes recur

Explanation

Correct Answer

D:

Learning from missed signs improves triage.

Incorrect Answers

A:

Obligations evolve across agreements and regions. It may help maintain coordinating overlapping reporting obligations, whereas the stated continuing risk concerns updating incident severity during investigation.

B:

Operational reality changes beyond IT diagrams. It may help maintain testing end-to-end business continuity outcomes, whereas the stated continuing risk concerns updating incident severity during investigation.

C:

The thresholds should respond to evidence. It may help maintain selecting proportional incident response activation thresholds, whereas the stated continuing risk concerns updating incident severity during investigation.

Question 645

An organization wants to use external incident response retainers but has never tested the contract's activation process. Which decision should the information security manager prioritize?

  1. Design continuity exercises around critical business transactions and their dependencies
  2. Include third-party response activation in incident readiness exercises and ownership controls
  3. Use approved recovery criteria that include integrity, confidentiality, and RTO commitments
  4. Use objective-driven exercises with realistic ambiguity and independent observation

Explanation

Correct Answer

B:

A signed contract is not assurance that help will arrive promptly.

Incorrect Answers

A:

A restored server does not prove that an end-to-end process works. However, it does not make the decision needed for making retainer services operational during a crisis in this scenario.

C:

Rapid restoration is not success if records are corrupted or compromised. However, it does not make the decision needed for making retainer services operational during a crisis in this scenario.

D:

Predetermined prompts hide gaps in actual incident judgment. However, it does not make the decision needed for making retainer services operational during a crisis in this scenario.

Question 646

An organization wants to use external incident response retainers but has never tested the contract's activation process. During implementation, which action most directly executes the necessary response?

  1. Define activation contacts, emergency authorization, evidence sharing, and access boundaries
  2. Define cross-plan activation triggers, dependencies, and recovery ownership with business teams
  3. Document evidence thresholds, owner handoffs, and severity review procedures
  4. Map outage criteria and recovery-plan activation steps to accountable executives

Explanation

Correct Answer

A:

Readiness needs workable details.

Incorrect Answers

B:

A shared framework clarifies handoffs. That could support aligning incident response with recovery and continuity, but it does not implement the requested making retainer services operational during a crisis.

C:

The procedure should guide responders from uncertain signals to decisions. That could support establishing reliable detection-to-declaration workflow, but it does not implement the requested making retainer services operational during a crisis.

D:

Clear authority avoids premature or delayed disaster declaration. That could support distinguishing operational incidents from disaster activation, but it does not implement the requested making retainer services operational during a crisis.

Question 647

An organization wants to use external incident response retainers but has never tested the contract's activation process. What would provide the strongest practical verification of this requirement?

  1. Activate the retainer in an authorized simulation and measure arrival and onboarding time
  2. Run a hunt-to-incident simulation and confirm the proper commander approves containment
  3. Attempt authorized replay of the previous unauthorized login and confirm it is denied
  4. Run a simulation and confirm regional actions follow one incident strategy without duplicate disruption

Explanation

Correct Answer

A:

An end-to-end test validates service access.

Incorrect Answers

B:

The exercise validates the authorization boundary. This provides evidence for separating investigation from authorized response, not proof of making retainer services operational during a crisis.

C:

A targeted test validates removal of persistence. This provides evidence for requiring eradication before full recovery acceptance, not proof of making retainer services operational during a crisis.

D:

A coordinated test validates unity of command. This provides evidence for establishing unified incident command, not proof of making retainer services operational during a crisis.

Question 648

An organization wants to use external incident response retainers but has never tested the contract's activation process. Which follow-up is most relevant as the environment changes?

  1. Revisit playbook relevance when threat intelligence and platform changes emerge
  2. Review backup immutability and restore success after new storage and threat changes
  3. Review mapping accuracy and response speed after incidents or data-system changes
  4. Review retainer scope and contacts before renewal or significant business changes

Explanation

Correct Answer

D:

Vendor readiness can degrade.

Incorrect Answers

A:

Readiness requires current techniques. It may help maintain updating playbooks through incident intelligence, whereas the stated continuing risk concerns making retainer services operational during a crisis.

B:

Ransomware defense depends on reliable copies. It may help maintain planning clean restoration after destructive compromise, whereas the stated continuing risk concerns making retainer services operational during a crisis.

C:

Data inventory quality drives notification readiness. It may help maintain preparing a credible breach notification fact base, whereas the stated continuing risk concerns making retainer services operational during a crisis.

Question 649

A company has a business continuity plan but lacks an agreed method for declaring a cyber disaster versus a localized outage. Which management decision most directly addresses the stated business need?

  1. Establish disaster declaration authority based on business impact, dependency failures, and tolerances
  2. Integrate incident response, business continuity, and disaster recovery decision points
  3. Appoint one accountable incident commander with delegated regional execution authority
  4. Develop a business-continuity fallback for dispatch processes based on BIA priorities

Explanation

Correct Answer

A:

Labels should reflect service consequences rather than technical complexity alone.

Incorrect Answers

B:

Containment and restoration can conflict if plans are not coordinated. However, it does not make the decision needed for distinguishing operational incidents from disaster activation in this scenario.

C:

Parallel command can create harmful conflicting actions. However, it does not make the decision needed for distinguishing operational incidents from disaster activation in this scenario.

D:

Service resilience requires alternate ways to perform essential operations. However, it does not make the decision needed for distinguishing operational incidents from disaster activation in this scenario.

Question 650

A company has a business continuity plan but lacks an agreed method for declaring a cyber disaster versus a localized outage. Which implementation step best translates the requirement into an operating control?

  1. Apply engineering-approved segmentation and manual control steps with documented authority
  2. Assign a corrective control owner, rollout plan, and verification criteria across systems
  3. Map outage criteria and recovery-plan activation steps to accountable executives
  4. Define measures for detection, escalation, containment, recovery, and exception causes

Explanation

Correct Answer

C:

Clear authority avoids premature or delayed disaster declaration.

Incorrect Answers

A:

Containment methods must respect process safety. That could support incorporating safety authority into incident containment, but it does not implement the requested distinguishing operational incidents from disaster activation.

B:

Remediation must address systemic cause. That could support moving from eradication to enterprise corrective action, but it does not implement the requested distinguishing operational incidents from disaster activation.

D:

Multiple stages expose bottlenecks. That could support improving incident response performance reporting, but it does not implement the requested distinguishing operational incidents from disaster activation.

Certified Information Security Manager (CISM) Practice Tests

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