Isaca CISA Practice Test 51
Question 500
An IS auditor evaluates this situation: A merger adds a regulated customer database after the audit plan was approved, but the plan is treated as unchangeable. Which audit principle MOST directly applies to this situation?
- Join multiplicity can distort counts and audit conclusions even when query syntax succeeds.
- Risk-based audit planning is dynamic when business context and material exposures change.
- Absence of reported incidents is not proof of low inherent or residual risk.
- Auditor objectivity is impaired by assessing one's own recent design work.
Explanation
Correct Answer
B:Risk-based audit planning is dynamic when business context and material exposures change. The corresponding audit procedure is: Review the acquisition risk assessment, legal obligations and remaining audit capacity.
Incorrect Answers
A:Join multiplicity can distort counts and audit conclusions even when query syntax succeeds. This would be relevant to a different issue such as: An audit query joins employee and privilege tables but mistakenly duplicates rows for users with multiple roles. In the present case, the most directly relevant principle is: Risk-based audit planning is dynamic when business context and material exposures change. The governing distinction is: Risk-based audit planning is dynamic when business context and material exposures change.
C:Absence of reported incidents is not proof of low inherent or residual risk. This would be relevant to a different issue such as: An auditor cannot decide whether to review a high-impact legacy billing interface because no recent incidents are recorded. In the present case, the most directly relevant principle is: Risk-based audit planning is dynamic when business context and material exposures change. The governing distinction is: Risk-based audit planning is dynamic when business context and material exposures change.
D:Auditor objectivity is impaired by assessing one's own recent design work. This would be relevant to a different issue such as: An internal auditor helped configure the privileged-access system now scheduled for an assurance review. In the present case, the most directly relevant principle is: Risk-based audit planning is dynamic when business context and material exposures change. The governing distinction is: Risk-based audit planning is dynamic when business context and material exposures change.
Question 501
Before reaching an audit conclusion, consider: A departed finance employee's account remains enabled in a payroll application after HR termination. Which evidence should the auditor review FIRST to evaluate this risk?
- Compare contractor rosters, entitlements, training records and onboarding gates.
- Reconcile HR termination timestamps, application login records and account disablement.
- Review scanner evidence, actual exposure, exploit preconditions and protective controls.
- Inspect privileged session logs, account ownership, vault configuration and duties.
Explanation
Correct Answer
B:Reconcile HR termination timestamps, application login records and account disablement. The governing principle is: Identity lifecycle controls should promptly revoke access when authorization ends.
Incorrect Answers
A:Compare contractor rosters, entitlements, training records and onboarding gates. This would be relevant to a different issue such as: Contractor onboarding omits data-handling training although contractors access classified research files. In the present case, the most directly relevant audit step is: Reconcile HR termination timestamps, application login records and account disablement. The governing distinction is: Identity lifecycle controls should promptly revoke access when authorization ends.
C:Review scanner evidence, actual exposure, exploit preconditions and protective controls. This would be relevant to a different issue such as: A vulnerability scanner reports a critical web flaw but the service is behind a compensating control and no validation occurs. In the present case, the most directly relevant audit step is: Reconcile HR termination timestamps, application login records and account disablement. The governing distinction is: Identity lifecycle controls should promptly revoke access when authorization ends.
D:Inspect privileged session logs, account ownership, vault configuration and duties. This would be relevant to a different issue such as: Privileged database administrators routinely use shared root credentials without individual attribution. In the present case, the most directly relevant audit step is: Reconcile HR termination timestamps, application login records and account disablement. The governing distinction is: Identity lifecycle controls should promptly revoke access when authorization ends.
Question 502
Management reports that this issue has been corrected: A malicious attachment launches a child process and connects to an unfamiliar command server. Which result would provide the STRONGEST assurance that the issue is corrected?
- Reviews identify inappropriate entitlements and revocation actions complete promptly.
- Investigation records distinguish confirmed compromise from benign travel anomalies.
- A controlled upstream power loss leaves essential services within continuity targets.
- Controlled simulations generate correlated alerts at the appropriate stages.
Explanation
Correct Answer
D:Controlled simulations generate correlated alerts at the appropriate stages. It addresses information system attack methods and techniques. Underlying audit concern: Attack analysis should connect execution, persistence and communications evidence.
Incorrect Answers
A:Reviews identify inappropriate entitlements and revocation actions complete promptly. This would be relevant to a different issue such as: A quarterly access certification is completed by a system administrator who cannot identify the employees' current business responsibilities. In the present case, the most directly relevant verification is: Controlled simulations generate correlated alerts at the appropriate stages. The governing distinction is: Attack analysis should connect execution, persistence and communications evidence.
B:Investigation records distinguish confirmed compromise from benign travel anomalies. This would be relevant to a different issue such as: Repeated impossible-travel sign-ins occur before a finance account initiates unusual transfers. In the present case, the most directly relevant verification is: Controlled simulations generate correlated alerts at the appropriate stages. The governing distinction is: Attack analysis should connect execution, persistence and communications evidence.
C:A controlled upstream power loss leaves essential services within continuity targets. This would be relevant to a different issue such as: A data center's redundant power feeds terminate at the same upstream distribution panel. In the present case, the most directly relevant verification is: Controlled simulations generate correlated alerts at the appropriate stages. The governing distinction is: Attack analysis should connect execution, persistence and communications evidence.
Question 503
Before reaching an audit conclusion, consider: A payment API relies on user-supplied transaction values without server-side validation. Which evidence should the auditor review FIRST to evaluate this risk?
- Trace refund abuse scenarios, authorization roles and transaction integrity needs.
- Compare balances, unique IDs, rejects, cutoff times and migration mapping rules.
- Recalculate lifetime costs, benefit timing, support effort and discount assumptions.
- Inspect threat model, data contracts, validation placement and rejected-case handling.
Explanation
Correct Answer
D:Inspect threat model, data contracts, validation placement and rejected-case handling. The governing principle is: Application control design must validate untrusted inputs against authorized business rules.
Incorrect Answers
A:Trace refund abuse scenarios, authorization roles and transaction integrity needs. This would be relevant to a different issue such as: A new web checkout design addresses user experience but fails to define controls for unauthorized refund changes. In the present case, the most directly relevant audit step is: Inspect threat model, data contracts, validation placement and rejected-case handling. The governing distinction is: Application control design must validate untrusted inputs against authorized business rules.
B:Compare balances, unique IDs, rejects, cutoff times and migration mapping rules. This would be relevant to a different issue such as: A bank converts 20 years of loan records into a new core system and reconciles only total record counts. In the present case, the most directly relevant audit step is: Inspect threat model, data contracts, validation placement and rejected-case handling. The governing distinction is: Application control design must validate untrusted inputs against authorized business rules.
C:Recalculate lifetime costs, benefit timing, support effort and discount assumptions. This would be relevant to a different issue such as: An automation business case counts staff savings but omits new licenses, monitoring and transition costs. In the present case, the most directly relevant audit step is: Inspect threat model, data contracts, validation placement and rejected-case handling. The governing distinction is: Application control design must validate untrusted inputs against authorized business rules.
Question 504
An IS auditor evaluates this situation: A company copies database files nightly while transactions remain active, producing inconsistent backups. Which audit principle MOST directly applies to this situation?
- Backup completion does not prove data restorability or usable business recovery.
- Incident evidence retention should match legal, audit and operational requirements.
- DR plans must restore usable business capabilities, not merely power on infrastructure.
- Data protection must account for application consistency and in-flight transactions.
Explanation
Correct Answer
D:Data protection must account for application consistency and in-flight transactions. The corresponding audit procedure is: Review backup method, transaction logs, quiescing support and restore checks.
Incorrect Answers
A:Backup completion does not prove data restorability or usable business recovery. This would be relevant to a different issue such as: An enterprise calls backups successful because jobs complete, but no recent restoration test has been performed. In the present case, the most directly relevant principle is: Data protection must account for application consistency and in-flight transactions. The governing distinction is: Data protection must account for application consistency and in-flight transactions.
B:Incident evidence retention should match legal, audit and operational requirements. This would be relevant to a different issue such as: A service desk deletes incident attachments when tickets are closed, preventing later regulatory review. In the present case, the most directly relevant principle is: Data protection must account for application consistency and in-flight transactions. The governing distinction is: Data protection must account for application consistency and in-flight transactions.
C:DR plans must restore usable business capabilities, not merely power on infrastructure. This would be relevant to a different issue such as: A disaster recovery runbook lists server boot order but omits database integrity and application acceptance tests. In the present case, the most directly relevant principle is: Data protection must account for application consistency and in-flight transactions. The governing distinction is: Data protection must account for application consistency and in-flight transactions.
Question 505
Before reaching an audit conclusion, consider: A research team labels every file confidential, generating excessive DLP false positives and routine overrides. Which evidence should the auditor review FIRST to evaluate this risk?
- Review classification rules, false-positive cases, override frequency and business needs.
- Review regulatory differences, baseline requirements, risk assessments and exception approvals.
- Map sensitive data flows, network egress methods and endpoint/browser policy enforcement.
- Compare contractor rosters, entitlements, training records and onboarding gates.
Explanation
Correct Answer
A:Review classification rules, false-positive cases, override frequency and business needs. The governing principle is: Overbroad classification can undermine effective enforcement and incident response.
Incorrect Answers
B:Review regulatory differences, baseline requirements, risk assessments and exception approvals. This would be relevant to a different issue such as: A regional business copies a global security baseline but has no documented exceptions for local privacy restrictions. In the present case, the most directly relevant audit step is: Review classification rules, false-positive cases, override frequency and business needs. The governing distinction is: Overbroad classification can undermine effective enforcement and incident response.
C:Map sensitive data flows, network egress methods and endpoint/browser policy enforcement. This would be relevant to a different issue such as: A DLP tool blocks confidential document attachments but ignores similar files uploaded through approved web browsers. In the present case, the most directly relevant audit step is: Review classification rules, false-positive cases, override frequency and business needs. The governing distinction is: Overbroad classification can undermine effective enforcement and incident response.
D:Compare contractor rosters, entitlements, training records and onboarding gates. This would be relevant to a different issue such as: Contractor onboarding omits data-handling training although contractors access classified research files. In the present case, the most directly relevant audit step is: Review classification rules, false-positive cases, override frequency and business needs. The governing distinction is: Overbroad classification can undermine effective enforcement and incident response.
Question 506
Before reaching an audit conclusion, consider: Post-audit follow-up marks a critical password weakness closed solely because management sent a completion email. Which evidence should the auditor review FIRST to evaluate this risk?
- Review required technical tests, skill inventory, schedules and critical-path tasks.
- Reconcile HR departures and access history against the access extract's coverage dates.
- Check reviewer identities, permissions, timestamps and supervisory quality policy.
- Inspect the new configuration, deployment scope and operational evidence across affected systems.
Explanation
Correct Answer
D:Inspect the new configuration, deployment scope and operational evidence across affected systems. The governing principle is: Follow-up must evaluate whether remediation controls are effectively implemented, not just promised.
Incorrect Answers
A:Review required technical tests, skill inventory, schedules and critical-path tasks. This would be relevant to a different issue such as: A compliance audit is due in four weeks but its only database specialist is assigned to an unrelated engagement. In the present case, the most directly relevant audit step is: Inspect the new configuration, deployment scope and operational evidence across affected systems. The governing distinction is: Follow-up must evaluate whether remediation controls are effectively implemented, not just promised.
B:Reconcile HR departures and access history against the access extract's coverage dates. This would be relevant to a different issue such as: A database access audit receives a file containing only current active users although it must assess leavers over the last quarter. In the present case, the most directly relevant audit step is: Inspect the new configuration, deployment scope and operational evidence across affected systems. The governing distinction is: Follow-up must evaluate whether remediation controls are effectively implemented, not just promised.
C:Check reviewer identities, permissions, timestamps and supervisory quality policy. This would be relevant to a different issue such as: An audit director relies on peer sign-offs that were completed by the same person who prepared each working paper. In the present case, the most directly relevant audit step is: Inspect the new configuration, deployment scope and operational evidence across affected systems. The governing distinction is: Follow-up must evaluate whether remediation controls are effectively implemented, not just promised.
Question 507
Management reports that this issue has been corrected: An IT strategy document lists new tools but has no targets for customer availability or service costs. Which result would provide the STRONGEST assurance that the issue is corrected?
- A new requirement is assessed, implemented and evidenced before its effective date.
- Support workflow succeeds without exposing unnecessary identity data.
- Selected projects link to approved goals and post-investment benefit monitoring.
- IT performance reports demonstrate progress toward business-approved goals.
Explanation
Correct Answer
D:IT performance reports demonstrate progress toward business-approved goals. It addresses organizational structure, it governance, and it strategy. Underlying audit concern: Technology strategy should translate enterprise value objectives into measurable performance outcomes.
Incorrect Answers
A:A new requirement is assessed, implemented and evidenced before its effective date. This would be relevant to a different issue such as: A bank's compliance register still lists a superseded regulatory reporting deadline after a rule change. In the present case, the most directly relevant verification is: IT performance reports demonstrate progress toward business-approved goals. The governing distinction is: Technology strategy should translate enterprise value objectives into measurable performance outcomes.
B:Support workflow succeeds without exposing unnecessary identity data. This would be relevant to a different issue such as: A service provider requests full identity documents when a masked identifier would satisfy a support task. In the present case, the most directly relevant verification is: IT performance reports demonstrate progress toward business-approved goals. The governing distinction is: Technology strategy should translate enterprise value objectives into measurable performance outcomes.
C:Selected projects link to approved goals and post-investment benefit monitoring. This would be relevant to a different issue such as: A technology steering group approves projects without showing how they support the organization's strategic priorities. In the present case, the most directly relevant verification is: IT performance reports demonstrate progress toward business-approved goals. The governing distinction is: Technology strategy should translate enterprise value objectives into measurable performance outcomes.
Question 508
Management reports that this issue has been corrected: A company continues paying software maintenance for applications deleted during a consolidation. Which result would provide the STRONGEST assurance that the issue is corrected?
- Repeated incidents decline after a verified fix and problem record closure.
- Unowned and unsupported assets are identified and assigned timely disposition.
- Active licenses, contract costs and actual deployments agree within documented exceptions.
- Unauthorized formula changes are detected and regulatory calculations reconcile.
Explanation
Correct Answer
C:Active licenses, contract costs and actual deployments agree within documented exceptions. It addresses it asset management. Underlying audit concern: Software asset records must reconcile acquisitions, deployment, retirement and entitlements.
Incorrect Answers
A:Repeated incidents decline after a verified fix and problem record closure. This would be relevant to a different issue such as: A helpdesk repeatedly reopens application errors but closes each ticket without investigating a shared underlying defect. In the present case, the most directly relevant verification is: Active licenses, contract costs and actual deployments agree within documented exceptions. The governing distinction is: Software asset records must reconcile acquisitions, deployment, retirement and entitlements.
B:Unowned and unsupported assets are identified and assigned timely disposition. This would be relevant to a different issue such as: An IT inventory lists hundreds of production servers without owners or support end dates. In the present case, the most directly relevant verification is: Active licenses, contract costs and actual deployments agree within documented exceptions. The governing distinction is: Software asset records must reconcile acquisitions, deployment, retirement and entitlements.
D:Unauthorized formula changes are detected and regulatory calculations reconcile. This would be relevant to a different issue such as: A spreadsheet with editable formulas calculates regulatory capital but has no validation or change history. In the present case, the most directly relevant verification is: Active licenses, contract costs and actual deployments agree within documented exceptions. The governing distinction is: Software asset records must reconcile acquisitions, deployment, retirement and entitlements.
Question 509
An IS auditor evaluates this situation: A hospital chooses a cloud imaging service without confirming network reliability or clinical response needs. Which audit principle MOST directly applies to this situation?
- Lifecycle governance should maintain requirements and control traceability through change.
- Investment feasibility should evaluate total costs, benefits, risks and measurable assumptions.
- Readiness gates should include measured nonfunctional acceptance under representative demand.
- Feasibility studies should test technical, operational and compliance constraints before selection.
Explanation
Correct Answer
D:Feasibility studies should test technical, operational and compliance constraints before selection. The corresponding audit procedure is: Obtain required image volume, response targets, connectivity limits and data obligations.
Incorrect Answers
A:Lifecycle governance should maintain requirements and control traceability through change. This would be relevant to a different issue such as: A waterfall project signs off design once, then production requirements change without design traceability. In the present case, the most directly relevant principle is: Feasibility studies should test technical, operational and compliance constraints before selection. The governing distinction is: Feasibility studies should test technical, operational and compliance constraints before selection.
B:Investment feasibility should evaluate total costs, benefits, risks and measurable assumptions. This would be relevant to a different issue such as: An automation business case counts staff savings but omits new licenses, monitoring and transition costs. In the present case, the most directly relevant principle is: Feasibility studies should test technical, operational and compliance constraints before selection. The governing distinction is: Feasibility studies should test technical, operational and compliance constraints before selection.
C:Readiness gates should include measured nonfunctional acceptance under representative demand. This would be relevant to a different issue such as: A cloud platform is declared ready despite failed high-load tests and no capacity remediation plan. In the present case, the most directly relevant principle is: Feasibility studies should test technical, operational and compliance constraints before selection. The governing distinction is: Feasibility studies should test technical, operational and compliance constraints before selection.
Question 510
An IS auditor is preparing recommendations after reviewing this situation: Two data centers have separate buildings but share one telecom carrier and underground duct. Which recommendation would BEST address the identified weakness?
- Recommend independent communications paths or explicit mitigation for shared exposure.
- Recommend integrated DR connectivity testing and remediation of broken dependencies.
- Recommend tested alternate operator coverage and controlled emergency access.
- Recommend durable queuing, replay controls and dead-letter monitoring.
Explanation
Correct Answer
A:Recommend independent communications paths or explicit mitigation for shared exposure. The relevant control principle is: Operational resilience requires evaluation of common-mode dependencies. A meaningful follow-up should establish: A representative provider outage does not disable every required inter-site service.
Incorrect Answers
B:Recommend integrated DR connectivity testing and remediation of broken dependencies. This would be relevant to a different issue such as: A recovery site has servers but no validated link to the payment network after a facility loss. In the present case, the most directly relevant recommendation is: Recommend independent communications paths or explicit mitigation for shared exposure. The governing distinction is: Operational resilience requires evaluation of common-mode dependencies.
C:Recommend tested alternate operator coverage and controlled emergency access. This would be relevant to a different issue such as: A highly available application uses only one privileged administrator who is unavailable during a holiday. In the present case, the most directly relevant recommendation is: Recommend independent communications paths or explicit mitigation for shared exposure. The governing distinction is: Operational resilience requires evaluation of common-mode dependencies.
D:Recommend durable queuing, replay controls and dead-letter monitoring. This would be relevant to a different issue such as: A cloud event bus drops messages during an outage and consuming systems never replay them. In the present case, the most directly relevant recommendation is: Recommend independent communications paths or explicit mitigation for shared exposure. The governing distinction is: Operational resilience requires evaluation of common-mode dependencies.