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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?

  1. Join multiplicity can distort counts and audit conclusions even when query syntax succeeds.
  2. Risk-based audit planning is dynamic when business context and material exposures change.
  3. Absence of reported incidents is not proof of low inherent or residual risk.
  4. 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?

  1. Compare contractor rosters, entitlements, training records and onboarding gates.
  2. Reconcile HR termination timestamps, application login records and account disablement.
  3. Review scanner evidence, actual exposure, exploit preconditions and protective controls.
  4. 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?

  1. Reviews identify inappropriate entitlements and revocation actions complete promptly.
  2. Investigation records distinguish confirmed compromise from benign travel anomalies.
  3. A controlled upstream power loss leaves essential services within continuity targets.
  4. 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?

  1. Trace refund abuse scenarios, authorization roles and transaction integrity needs.
  2. Compare balances, unique IDs, rejects, cutoff times and migration mapping rules.
  3. Recalculate lifetime costs, benefit timing, support effort and discount assumptions.
  4. 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?

  1. Backup completion does not prove data restorability or usable business recovery.
  2. Incident evidence retention should match legal, audit and operational requirements.
  3. DR plans must restore usable business capabilities, not merely power on infrastructure.
  4. 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?

  1. Review classification rules, false-positive cases, override frequency and business needs.
  2. Review regulatory differences, baseline requirements, risk assessments and exception approvals.
  3. Map sensitive data flows, network egress methods and endpoint/browser policy enforcement.
  4. 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?

  1. Review required technical tests, skill inventory, schedules and critical-path tasks.
  2. Reconcile HR departures and access history against the access extract's coverage dates.
  3. Check reviewer identities, permissions, timestamps and supervisory quality policy.
  4. 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?

  1. A new requirement is assessed, implemented and evidenced before its effective date.
  2. Support workflow succeeds without exposing unnecessary identity data.
  3. Selected projects link to approved goals and post-investment benefit monitoring.
  4. 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?

  1. Repeated incidents decline after a verified fix and problem record closure.
  2. Unowned and unsupported assets are identified and assigned timely disposition.
  3. Active licenses, contract costs and actual deployments agree within documented exceptions.
  4. 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?

  1. Lifecycle governance should maintain requirements and control traceability through change.
  2. Investment feasibility should evaluate total costs, benefits, risks and measurable assumptions.
  3. Readiness gates should include measured nonfunctional acceptance under representative demand.
  4. 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?

  1. Recommend independent communications paths or explicit mitigation for shared exposure.
  2. Recommend integrated DR connectivity testing and remediation of broken dependencies.
  3. Recommend tested alternate operator coverage and controlled emergency access.
  4. 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.

Certified Information Systems Auditor (CISA) Practice Tests