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Isaca CISA Bundle

Exam Code: CISA

Exam Name Certified Information Systems Auditor

Certification Provider: Isaca

Corresponding Certification: CISA

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Certified Information Systems Auditor (CISA) Practice Tests

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Isaca CISA Practice Test 52

Question 510

During a routine controls assessment at a regional hospital, the IS auditor learns that a service reports 99.9 percent host uptime despite repeated customer checkout failures. The affected operation supports patient-care scheduling and claims processing. Healthcare service continuity and protected records are at stake. What outcome would provide the STRONGEST evidence that the identified gap is resolved?

  1. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom.
  2. Protected time-synchronized records and forwarding-health alerts reproduce the expected event trail across the retention window.
  3. Approved BIA records connect business services and dependencies to measurable recovery priorities and owners.
  4. Approved change histories and representative patch verification show changes are controlled and critical exposure is addressed.

Explanation

Correct Answer

A:

Correct. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that a service reports 99.9 percent host uptime despite repeated customer checkout failures. The reviewer must verify the remediation period and scope.

Incorrect Answers

B:

Not the strongest closure evidence for this case. That result could pass without demonstrating evidence appropriate to the audit conclusion.

C:

Not the strongest closure evidence for this case. Acceptance here depends on observing evidence appropriate to the audit conclusion, not only that test.

D:

Not the strongest closure evidence for this case. It does not establish the requested evidence appropriate to the audit conclusion outcome.

Question 511

During a payment-platform modernization at a payment clearing organization, the IS auditor learns that storage utilization exceeds the procurement threshold with no forecast or expansion plan. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. What control exposure MOST directly explains why this observation is significant?

  1. Available infrastructure may not deliver committed business service capacity under peak load or shared failures.
  2. Missing or manipulable logs can prevent detection, accountability and reconstruction of material events.
  3. Inadequate response and root-cause practices can prolong service disruption and allow repeat incidents.
  4. Correlated dependencies and insufficient headroom can defeat assumed availability during disruption.

Explanation

Correct Answer

A:

Correct. Available infrastructure may not deliver committed business service capacity under peak load or shared failures. The described exception is: storage utilization exceeds the procurement threshold with no forecast or expansion plan. This risk ties the observation to the business significance of merchant settlement and reconciliation, rather than treating management's claim as independent assurance.

Incorrect Answers

B:

Missing or manipulable logs can prevent detection, accountability and reconstruction of material events. The configuration must instead establish evidence appropriate to the audit conclusion.

C:

Inadequate response and root-cause practices can prolong service disruption and allow repeat incidents. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

D:

Correlated dependencies and insufficient headroom can defeat assumed availability during disruption. It changes a different feature than evidence appropriate to the audit conclusion.

Question 512

During a payment-platform modernization at a payment clearing organization, the IS auditor learns that storage utilization exceeds the procurement threshold with no forecast or expansion plan. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. Which evidence-gathering approach is MOST aligned with the recorded exposure?

  1. Map end-to-end failure domains and execute approved component or zone-loss scenarios against service objectives.
  2. Review SLA definitions, responsibilities and exclusions; independently reproduce reported outcomes from transaction or ticket evidence.
  3. Trace incident samples through prioritization, escalation, restoration evidence and linkage to problem investigations.
  4. Compare service-level performance under representative workload, forecast trends and test plausible component failures.

Explanation

Correct Answer

D:

Correct. Compare service-level performance under representative workload, forecast trends and test plausible component failures. The procedure directly tests the reported condition that storage utilization exceeds the procurement threshold with no forecast or expansion plan. A defensible IS audit conclusion requires relevant and reliable evidence from the actual control population and period.

Incorrect Answers

A:

Not the most direct fieldwork procedure for these facts. Acceptance here depends on observing evidence appropriate to the audit conclusion, not only that test.

B:

Not the most direct fieldwork procedure for these facts. It does not establish the requested evidence appropriate to the audit conclusion outcome.

C:

Not the most direct fieldwork procedure for these facts. The relevant success criterion is evidence appropriate to the audit conclusion; this measures a different function.

Question 513

During a payment-platform modernization at a payment clearing organization, the IS auditor learns that storage utilization exceeds the procurement threshold with no forecast or expansion plan. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. Which evidence would BEST support a conclusion that the exposure has been addressed?

  1. Time-stamped records and repeated-incident trend checks show timely service restoration and action on root causes.
  2. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom.
  3. Fault injection and measured failover show essential transactions continue or recover inside agreed tolerances.
  4. Protected time-synchronized records and forwarding-health alerts reproduce the expected event trail across the retention window.

Explanation

Correct Answer

B:

Correct. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that storage utilization exceeds the procurement threshold with no forecast or expansion plan. The reviewer must verify the remediation period and scope.

Incorrect Answers

A:

Not the strongest closure evidence for this case. It does not establish the requested evidence appropriate to the audit conclusion outcome.

C:

Not the strongest closure evidence for this case. That result could pass without demonstrating evidence appropriate to the audit conclusion.

D:

Not the strongest closure evidence for this case. Acceptance here depends on observing evidence appropriate to the audit conclusion, not only that test.

Question 514

During a regulatory readiness review at a municipal government, the IS auditor learns that a load balancer is redundant but relies on the same upstream switch. The affected operation supports citizen service accounts and public records. Public accountability and essential service access are affected. Which consequence would MOST directly follow if this weakness remains unresolved?

  1. Available infrastructure may not deliver committed business service capacity under peak load or shared failures.
  2. Unapproved or poorly tested changes can disrupt services or leave known vulnerabilities without accountable treatment.
  3. Missing or manipulable logs can prevent detection, accountability and reconstruction of material events.
  4. Weak database controls can undermine transactional integrity, accountability and recoverability.

Explanation

Correct Answer

A:

Correct. Available infrastructure may not deliver committed business service capacity under peak load or shared failures. The described exception is: a load balancer is redundant but relies on the same upstream switch. This risk ties the observation to the business significance of citizen service accounts and public records, rather than treating management's claim as independent assurance.

Incorrect Answers

B:

Unapproved or poorly tested changes can disrupt services or leave known vulnerabilities without accountable treatment. That change would not implement evidence appropriate to the audit conclusion.

C:

Missing or manipulable logs can prevent detection, accountability and reconstruction of material events. The configuration must instead establish evidence appropriate to the audit conclusion.

D:

Weak database controls can undermine transactional integrity, accountability and recoverability. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

Question 515

During a regulatory readiness review at a municipal government, the IS auditor learns that a load balancer is redundant but relies on the same upstream switch. The affected operation supports citizen service accounts and public records. Public accountability and essential service access are affected. Which audit procedure would provide the MOST DIRECT evidence about this control?

  1. Review privileged activity, constraints, change history and recovery tests against representative data integrity risks.
  2. Review SLA definitions, responsibilities and exclusions; independently reproduce reported outcomes from transaction or ticket evidence.
  3. Compare service-level performance under representative workload, forecast trends and test plausible component failures.
  4. Sample change and patch events against approvals, risk assessments, baseline updates, testing and rollback records.

Explanation

Correct Answer

C:

Correct. Compare service-level performance under representative workload, forecast trends and test plausible component failures. The procedure directly tests the reported condition that a load balancer is redundant but relies on the same upstream switch. A defensible IS audit conclusion requires relevant and reliable evidence from the actual control population and period.

Incorrect Answers

A:

Not the most direct fieldwork procedure for these facts. That result could pass without demonstrating evidence appropriate to the audit conclusion.

B:

Not the most direct fieldwork procedure for these facts. Acceptance here depends on observing evidence appropriate to the audit conclusion, not only that test.

D:

Not the most direct fieldwork procedure for these facts. The relevant success criterion is evidence appropriate to the audit conclusion; this measures a different function.

Question 516

During a regulatory readiness review at a municipal government, the IS auditor learns that a load balancer is redundant but relies on the same upstream switch. The affected operation supports citizen service accounts and public records. Public accountability and essential service access are affected. Which follow-up result would BEST substantiate that the remediation operates effectively?

  1. Approved change histories and representative patch verification show changes are controlled and critical exposure is addressed.
  2. Protected time-synchronized records and forwarding-health alerts reproduce the expected event trail across the retention window.
  3. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom.
  4. Audited database changes, validated constraints and successful consistent restores support data accuracy and traceability.

Explanation

Correct Answer

C:

Correct. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that a load balancer is redundant but relies on the same upstream switch. The reviewer must verify the remediation period and scope.

Incorrect Answers

A:

Not the strongest closure evidence for this case. The configuration must instead establish evidence appropriate to the audit conclusion.

B:

Not the strongest closure evidence for this case. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

D:

Not the strongest closure evidence for this case. That change would not implement evidence appropriate to the audit conclusion.

Question 517

During a post-incident audit at a retail marketplace, the IS auditor learns that peak-season utilization is estimated from idle-week averages. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. Which weakness is MOST material to the control objective in this situation?

  1. Recovery objectives may not match actual business disruption tolerance when the BIA is incomplete or unapproved.
  2. Missing or manipulable logs can prevent detection, accountability and reconstruction of material events.
  3. Inadequate response and root-cause practices can prolong service disruption and allow repeat incidents.
  4. Available infrastructure may not deliver committed business service capacity under peak load or shared failures.

Explanation

Correct Answer

D:

Correct. Available infrastructure may not deliver committed business service capacity under peak load or shared failures. The described exception is: peak-season utilization is estimated from idle-week averages. This risk ties the observation to the business significance of customer checkout and order fulfillment, rather than treating management's claim as independent assurance.

Incorrect Answers

A:

Recovery objectives may not match actual business disruption tolerance when the BIA is incomplete or unapproved. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

B:

Missing or manipulable logs can prevent detection, accountability and reconstruction of material events. It changes a different feature than evidence appropriate to the audit conclusion.

C:

Inadequate response and root-cause practices can prolong service disruption and allow repeat incidents. That change would not implement evidence appropriate to the audit conclusion.

Question 518

During a post-incident audit at a retail marketplace, the IS auditor learns that peak-season utilization is estimated from idle-week averages. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. Which audit procedure would MOST directly validate the suspected control gap?

  1. Compare service-level performance under representative workload, forecast trends and test plausible component failures.
  2. Interview process owners, quantify outage and data-loss impacts and map dependencies to justified RTO and RPO tiers.
  3. Trace incident samples through prioritization, escalation, restoration evidence and linkage to problem investigations.
  4. Review SLA definitions, responsibilities and exclusions; independently reproduce reported outcomes from transaction or ticket evidence.

Explanation

Correct Answer

A:

Correct. Compare service-level performance under representative workload, forecast trends and test plausible component failures. The procedure directly tests the reported condition that peak-season utilization is estimated from idle-week averages. A defensible IS audit conclusion requires relevant and reliable evidence from the actual control population and period.

Incorrect Answers

B:

Not the most direct fieldwork procedure for these facts. That change would not implement evidence appropriate to the audit conclusion.

C:

Not the most direct fieldwork procedure for these facts. The configuration must instead establish evidence appropriate to the audit conclusion.

D:

Not the most direct fieldwork procedure for these facts. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

Question 519

During a post-incident audit at a retail marketplace, the IS auditor learns that peak-season utilization is estimated from idle-week averages. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. What would an auditor MOST want to see before accepting the issue as remediated?

  1. Time-stamped records and repeated-incident trend checks show timely service restoration and action on root causes.
  2. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom.
  3. Protected time-synchronized records and forwarding-health alerts reproduce the expected event trail across the retention window.
  4. Approved BIA records connect business services and dependencies to measurable recovery priorities and owners.

Explanation

Correct Answer

B:

Correct. End-to-end capacity and availability tests meet business service thresholds with demonstrated expansion and failure headroom. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that peak-season utilization is estimated from idle-week averages. The reviewer must verify the remediation period and scope.

Incorrect Answers

A:

Not the strongest closure evidence for this case. That change would not implement evidence appropriate to the audit conclusion.

C:

Not the strongest closure evidence for this case. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

D:

Not the strongest closure evidence for this case. It changes a different feature than evidence appropriate to the audit conclusion.

Question 520

During an outsourced-services renewal at a logistics group, the IS auditor learns that monitoring thresholds are set above the capacity at which the application degrades. The affected operation supports freight tracking and fleet operations. Delivery commitments and partner data flow through this process. What is the MOST defensible risk conclusion from the observed condition?

  1. Correlated dependencies and insufficient headroom can defeat assumed availability during disruption.
  2. Missing or manipulable logs can prevent detection, accountability and reconstruction of material events.
  3. Available infrastructure may not deliver committed business service capacity under peak load or shared failures.
  4. Unapproved or poorly tested changes can disrupt services or leave known vulnerabilities without accountable treatment.

Explanation

Correct Answer

C:

Correct. Available infrastructure may not deliver committed business service capacity under peak load or shared failures. The described exception is: monitoring thresholds are set above the capacity at which the application degrades. This risk ties the observation to the business significance of freight tracking and fleet operations, rather than treating management's claim as independent assurance.

Incorrect Answers

A:

Correlated dependencies and insufficient headroom can defeat assumed availability during disruption. Recurrence here depends on evidence appropriate to the audit conclusion, not this safeguard.

B:

Missing or manipulable logs can prevent detection, accountability and reconstruction of material events. That protection can exist while evidence appropriate to the audit conclusion is still missing.

D:

Unapproved or poorly tested changes can disrupt services or leave known vulnerabilities without accountable treatment. It does not retain the evidence appropriate to the audit conclusion control over time.