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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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Isaca CISA Practice Test 77

Question 760

During a post-incident audit at a retail marketplace, the IS auditor learns that key rotation is disabled after a test because dependencies are undocumented. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. Where should the audit team focus its principal finding?

  1. Security testing can miss material exposure or create uncontrolled disruption if scope, validation and remediation are weak.
  2. Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints.
  3. Cloud outsourcing does not remove customer responsibility for configuration, access and oversight of shared-control boundaries.
  4. Encryption may fail to protect information if keys, algorithms, transport or access are poorly governed.

Explanation

Correct Answer

D:

Correct. Encryption may fail to protect information if keys, algorithms, transport or access are poorly governed. The described exception is: key rotation is disabled after a test because dependencies are undocumented. 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:

Security testing can miss material exposure or create uncontrolled disruption if scope, validation and remediation are weak. The configuration must instead establish evidence appropriate to the audit conclusion.

B:

Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

C:

Cloud outsourcing does not remove customer responsibility for configuration, access and oversight of shared-control boundaries. It changes a different feature than evidence appropriate to the audit conclusion.

Question 761

During a post-incident audit at a retail marketplace, the IS auditor learns that key rotation is disabled after a test because dependencies are undocumented. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. Which substantive or control test most directly addresses the observation?

  1. Inspect key ownership and separation, configuration, rotation and recovery using authorized readback and negative tests.
  2. Compare role-based training coverage, simulations, behavior trends and corrective follow-up after social engineering events.
  3. Review test authorization, representative scope, evidence, independent verification and corrective retesting of significant findings.
  4. Map the service responsibility model and inspect tenant configuration, identity, logging and third-party assurance scope.

Explanation

Correct Answer

A:

Correct. Inspect key ownership and separation, configuration, rotation and recovery using authorized readback and negative tests. The procedure directly tests the reported condition that key rotation is disabled after a test because dependencies are undocumented. 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. It changes a different feature than evidence appropriate to the audit conclusion.

C:

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

D:

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

Question 762

During a post-incident audit at a retail marketplace, the IS auditor learns that key rotation is disabled after a test because dependencies are undocumented. The affected operation supports customer checkout and order fulfillment. Customer transactions and market trust depend on effective control. What outcome would provide the STRONGEST evidence that the identified gap is resolved?

  1. Tenant-isolation checks and responsibility-mapped evidence show both provider and customer controls work as assigned.
  2. Authorized test reports and targeted retests demonstrate critical exposures are identified, risk-rated and resolved.
  3. Controlled cryptographic and recovery tests show protected secrets and authorized decryption while revoked access fails.
  4. Observed endpoint and wireless tests isolate untrusted devices, remove weak credentials and protect lost-device data.

Explanation

Correct Answer

C:

Correct. Controlled cryptographic and recovery tests show protected secrets and authorized decryption while revoked access fails. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that key rotation is disabled after a test because dependencies are undocumented. The reviewer must verify the remediation period and scope.

Incorrect Answers

A:

Not the strongest closure evidence for this case. The relevant success criterion is evidence appropriate to the audit conclusion; this measures a different function.

B:

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. It does not establish the requested evidence appropriate to the audit conclusion outcome.

Question 763

During an outsourced-services renewal at a logistics group, the IS auditor learns that encrypted backups can be restored by any person with general storage permissions. The affected operation supports freight tracking and fleet operations. Delivery commitments and partner data flow through this process. What control exposure MOST directly explains why this observation is significant?

  1. Material attacks may go undetected or unhandled when monitoring coverage, correlation and escalation fail.
  2. Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints.
  3. Encryption may fail to protect information if keys, algorithms, transport or access are poorly governed.
  4. Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss.

Explanation

Correct Answer

C:

Correct. Encryption may fail to protect information if keys, algorithms, transport or access are poorly governed. The described exception is: encrypted backups can be restored by any person with general storage permissions. 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:

Material attacks may go undetected or unhandled when monitoring coverage, correlation and escalation fail. That change would not implement evidence appropriate to the audit conclusion.

B:

Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints. The configuration must instead establish evidence appropriate to the audit conclusion.

D:

Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss. It changes a different feature than evidence appropriate to the audit conclusion.

Question 764

During an outsourced-services renewal at a logistics group, the IS auditor learns that encrypted backups can be restored by any person with general storage permissions. The affected operation supports freight tracking and fleet operations. Delivery commitments and partner data flow through this process. Which evidence-gathering approach is MOST aligned with the recorded exposure?

  1. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions.
  2. Trace injected or historical test events from source ingestion through detection rules, triage and escalation records.
  3. Inspect key ownership and separation, configuration, rotation and recovery using authorized readback and negative tests.
  4. Compare role-based training coverage, simulations, behavior trends and corrective follow-up after social engineering events.

Explanation

Correct Answer

C:

Correct. Inspect key ownership and separation, configuration, rotation and recovery using authorized readback and negative tests. The procedure directly tests the reported condition that encrypted backups can be restored by any person with general storage permissions. 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.

D:

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

Question 765

During an outsourced-services renewal at a logistics group, the IS auditor learns that encrypted backups can be restored by any person with general storage permissions. The affected operation supports freight tracking and fleet operations. Delivery commitments and partner data flow through this process. Which evidence would BEST support a conclusion that the exposure has been addressed?

  1. Observed endpoint and wireless tests isolate untrusted devices, remove weak credentials and protect lost-device data.
  2. Controlled cryptographic and recovery tests show protected secrets and authorized decryption while revoked access fails.
  3. Controlled detections and case reviews show significant events are logged, prioritized and escalated within approved windows.
  4. Certificate tests reject invalid or revoked identities and renewal records demonstrate reliable trusted service continuity.

Explanation

Correct Answer

B:

Correct. Controlled cryptographic and recovery tests show protected secrets and authorized decryption while revoked access fails. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that encrypted backups can be restored by any person with general storage permissions. 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 766

During a routine controls assessment at a regional hospital, the IS auditor learns that a web application trusts every presented certificate because verification is disabled. The affected operation supports patient-care scheduling and claims processing. Healthcare service continuity and protected records are at stake. Which consequence would MOST directly follow if this weakness remains unresolved?

  1. Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints.
  2. Security testing can miss material exposure or create uncontrolled disruption if scope, validation and remediation are weak.
  3. Training attendance alone may not reduce unsafe behavior if role relevance and effectiveness are never assessed.
  4. Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss.

Explanation

Correct Answer

D:

Correct. Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss. The described exception is: a web application trusts every presented certificate because verification is disabled. This risk ties the observation to the business significance of patient-care scheduling and claims processing, rather than treating management's claim as independent assurance.

Incorrect Answers

A:

Weak device identity, lifecycle and network segmentation can expose sensitive systems through unmanaged endpoints. The relevant success criterion is evidence appropriate to the audit conclusion; this measures a different function.

B:

Security testing can miss material exposure or create uncontrolled disruption if scope, validation and remediation are weak. That result could pass without demonstrating evidence appropriate to the audit conclusion.

C:

Training attendance alone may not reduce unsafe behavior if role relevance and effectiveness are never assessed. Acceptance here depends on observing evidence appropriate to the audit conclusion, not only that test.

Question 767

During a routine controls assessment at a regional hospital, the IS auditor learns that a web application trusts every presented certificate because verification is disabled. The affected operation supports patient-care scheduling and claims processing. Healthcare service continuity and protected records are at stake. Which audit procedure would provide the MOST DIRECT evidence about this control?

  1. Inventory managed devices and test credential, encryption, isolation, patch and remote-wipe arrangements.
  2. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions.
  3. Map realistic threats to entry points, trust boundaries and known weaknesses, then validate controls against representative misuse cases.
  4. Review test authorization, representative scope, evidence, independent verification and corrective retesting of significant findings.

Explanation

Correct Answer

B:

Correct. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions. The procedure directly tests the reported condition that a web application trusts every presented certificate because verification is disabled. 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.

C:

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

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 768

During a routine controls assessment at a regional hospital, the IS auditor learns that a web application trusts every presented certificate because verification is disabled. The affected operation supports patient-care scheduling and claims processing. Healthcare service continuity and protected records are at stake. Which follow-up result would BEST substantiate that the remediation operates effectively?

  1. Observed endpoint and wireless tests isolate untrusted devices, remove weak credentials and protect lost-device data.
  2. Certificate tests reject invalid or revoked identities and renewal records demonstrate reliable trusted service continuity.
  3. Improved realistic reporting and safer decisions on repeated exercises demonstrate awareness effectiveness beyond completion rates.
  4. Authorized test reports and targeted retests demonstrate critical exposures are identified, risk-rated and resolved.

Explanation

Correct Answer

B:

Correct. Certificate tests reject invalid or revoked identities and renewal records demonstrate reliable trusted service continuity. This is stronger than a manager's verbal assurance because it can be checked against the observed issue that a web application trusts every presented certificate because verification is disabled. The reviewer must verify the remediation period and scope.

Incorrect Answers

A:

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

C:

Not the strongest closure evidence for this case. The relevant success criterion is evidence appropriate to the audit conclusion; this measures a different function.

D:

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

Question 769

During a payment-platform modernization at a payment clearing organization, the IS auditor learns that certificate expiration causes repeated service outages with no renewal owner. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. Which weakness is MOST material to the control objective in this situation?

  1. Training attendance alone may not reduce unsafe behavior if role relevance and effectiveness are never assessed.
  2. Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss.
  3. Material attacks may go undetected or unhandled when monitoring coverage, correlation and escalation fail.
  4. Cloud outsourcing does not remove customer responsibility for configuration, access and oversight of shared-control boundaries.

Explanation

Correct Answer

B:

Correct. Weak trust chain validation and certificate lifecycle controls can enable impersonation or availability loss. The described exception is: certificate expiration causes repeated service outages with no renewal owner. 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

A:

Training attendance alone may not reduce unsafe behavior if role relevance and effectiveness are never assessed. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.

C:

Material attacks may go undetected or unhandled when monitoring coverage, correlation and escalation fail. That change would not implement evidence appropriate to the audit conclusion.

D:

Cloud outsourcing does not remove customer responsibility for configuration, access and oversight of shared-control boundaries. The configuration must instead establish evidence appropriate to the audit conclusion.

Question 770

During a payment-platform modernization at a payment clearing organization, the IS auditor learns that certificate expiration causes repeated service outages with no renewal owner. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. Which audit procedure would MOST directly validate the suspected control gap?

  1. Map the service responsibility model and inspect tenant configuration, identity, logging and third-party assurance scope.
  2. Trace injected or historical test events from source ingestion through detection rules, triage and escalation records.
  3. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions.
  4. Map realistic threats to entry points, trust boundaries and known weaknesses, then validate controls against representative misuse cases.

Explanation

Correct Answer

C:

Correct. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions. The procedure directly tests the reported condition that certificate expiration causes repeated service outages with no renewal owner. 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. It changes a different feature than evidence appropriate to the audit conclusion.

B:

Not the most direct fieldwork procedure for these facts. That change would not implement 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.