CISA® Exam Prep 2026 Updated Practice Questions,
Comprehensive Information Systems Auditing Review,
Detailed Explanations, Verified Answers & Complete
Success Workbook
Domain Weights (ISACA Official — August 2024 ECO):
Domain Weight
Domain 1: Information Systems Auditing Process 18%
Domain 2: Governance & Management of IT 18%
Domain 3: Information Systems Acquisition, Development &
12%
Implementation
Domain 4: Information Systems Operations & Business
26%
Resilience
Domain 5: Protection of Information Assets 26%
The CISA exam tests not just knowledge but the auditor mindset — risk-based
thinking, professional skepticism, and the ability to apply IS audit standards
in real-world scenarios.
DOMAIN 1: INFORMATION SYSTEMS AUDITING PROCESS (18%) —
Questions 1–27
Question 1
An IS auditor is planning an audit of an organization's IT infrastructure. The
auditor has limited time and resources. What should the auditor do FIRST to
ensure the most effective use of audit resources?
,A. Conduct a comprehensive audit of all IT systems to ensure complete coverage
B. Perform a risk assessment to identify high-risk areas and prioritize audit
activities
C. Begin with the systems that are easiest to audit to build momentum
D. Use the previous year's audit plan without modification
Correct Answer: B
Rationale: Risk-based audit planning is the foundation of IS auditing. The auditor
must perform a risk assessment to identify areas of highest risk, which allows for
prioritization of audit resources. This is consistent with IS audit standards and the
CISA job practice. Conducting a comprehensive audit of all systems (A) is
impractical with limited resources. Starting with easy systems (C) ignores risk.
Using a previous plan without modification (D) fails to account for changes in the
organization's risk profile.
Question 2
Which of the following is the PRIMARY purpose of an IS audit charter?
A. To document the audit procedures for each audit engagement
B. To define the authority, responsibility, and accountability of the audit function
C. To list all IT assets to be audited
D. To establish the audit budget
Correct Answer: B
Rationale: An audit charter is a formal document that defines the purpose,
authority, and responsibility of the internal audit function. It establishes the audit
function's position within the organization and its access to records, personnel, and
physical properties. Audit procedures (A) are documented separately in audit
programs. Asset lists (C) are part of audit planning. The budget (D) is not the
primary purpose of the charter.
Question 3
An IS auditor is evaluating the effectiveness of an organization's internal controls.
Which type of control is designed to deter errors or irregularities from occurring?
,A. Detective control
B. Corrective control
C. Preventive control
D. Compensating control
Correct Answer: C
Rationale: Preventive controls are designed to deter errors or irregularities from
occurring (e.g., segregation of duties, access controls, authorization requirements).
Detective controls (A) identify errors after they have occurred (e.g.,
reconciliations, audits). Corrective controls (B) remediate errors after detection
(e.g., backup recovery). Compensating controls (D) are alternative controls when
primary controls are not feasible.
Question 4
During an audit, the IS auditor discovers that management has overridden a key IT
control. What is the auditor's MOST appropriate response?
A. Accept the override since management has the authority to make such decisions
B. Document the override, assess its impact on the audit opinion, and report it to
the appropriate governance body
C. Ignore the override if it was a one-time occurrence
D. Immediately terminate the audit engagement
Correct Answer: B
Rationale: Management override of controls is a significant red flag that must be
documented and assessed for its impact on the overall control environment. The
auditor should report the override to the appropriate governance body (e.g., audit
committee). Accepting the override (A) violates professional standards. Ignoring it
(C) is negligent. Terminating the engagement (D) is an extreme overreaction
without following proper escalation procedures.
Question 5
An IS auditor is using Computer-Assisted Audit Techniques (CAATs) to analyze a
large dataset. Which of the following is a PRIMARY benefit of using CAATs?
, A. They eliminate the need for auditor judgment
B. They enable the auditor to analyze 100% of the population rather than just a
sample
C. They are less expensive than manual testing
D. They guarantee the detection of all errors
Correct Answer: B
Rationale: A key benefit of CAATs is the ability to analyze entire populations of
data, providing greater assurance than sampling alone. CAATs do not eliminate
auditor judgment (A) — judgment is still required to interpret results. They may
not always be less expensive (C). They do not guarantee detection of all errors (D).
Question 6
An IS auditor is reviewing the organization's audit evidence collection process.
Which of the following is the MOST reliable type of audit evidence?
A. Oral representations from management
B. Internally generated documents
C. Externally generated documents (e.g., vendor invoices, bank statements)
D. Analytical procedures
Correct Answer: C
Rationale: Externally generated documents are generally considered more reliable
than internally generated evidence because they come from independent sources
outside the organization. Oral representations (A) are the least reliable. Internally
generated documents (B) are less reliable than external ones. Analytical procedures
(D) provide circumstantial evidence.
Question 7
An IS auditor is preparing an audit report. Which of the following is a key element
that should be included?
A. The personal opinions of the auditor about management
B. The scope, objectives, findings, and recommendations of the audit
Comprehensive Information Systems Auditing Review,
Detailed Explanations, Verified Answers & Complete
Success Workbook
Domain Weights (ISACA Official — August 2024 ECO):
Domain Weight
Domain 1: Information Systems Auditing Process 18%
Domain 2: Governance & Management of IT 18%
Domain 3: Information Systems Acquisition, Development &
12%
Implementation
Domain 4: Information Systems Operations & Business
26%
Resilience
Domain 5: Protection of Information Assets 26%
The CISA exam tests not just knowledge but the auditor mindset — risk-based
thinking, professional skepticism, and the ability to apply IS audit standards
in real-world scenarios.
DOMAIN 1: INFORMATION SYSTEMS AUDITING PROCESS (18%) —
Questions 1–27
Question 1
An IS auditor is planning an audit of an organization's IT infrastructure. The
auditor has limited time and resources. What should the auditor do FIRST to
ensure the most effective use of audit resources?
,A. Conduct a comprehensive audit of all IT systems to ensure complete coverage
B. Perform a risk assessment to identify high-risk areas and prioritize audit
activities
C. Begin with the systems that are easiest to audit to build momentum
D. Use the previous year's audit plan without modification
Correct Answer: B
Rationale: Risk-based audit planning is the foundation of IS auditing. The auditor
must perform a risk assessment to identify areas of highest risk, which allows for
prioritization of audit resources. This is consistent with IS audit standards and the
CISA job practice. Conducting a comprehensive audit of all systems (A) is
impractical with limited resources. Starting with easy systems (C) ignores risk.
Using a previous plan without modification (D) fails to account for changes in the
organization's risk profile.
Question 2
Which of the following is the PRIMARY purpose of an IS audit charter?
A. To document the audit procedures for each audit engagement
B. To define the authority, responsibility, and accountability of the audit function
C. To list all IT assets to be audited
D. To establish the audit budget
Correct Answer: B
Rationale: An audit charter is a formal document that defines the purpose,
authority, and responsibility of the internal audit function. It establishes the audit
function's position within the organization and its access to records, personnel, and
physical properties. Audit procedures (A) are documented separately in audit
programs. Asset lists (C) are part of audit planning. The budget (D) is not the
primary purpose of the charter.
Question 3
An IS auditor is evaluating the effectiveness of an organization's internal controls.
Which type of control is designed to deter errors or irregularities from occurring?
,A. Detective control
B. Corrective control
C. Preventive control
D. Compensating control
Correct Answer: C
Rationale: Preventive controls are designed to deter errors or irregularities from
occurring (e.g., segregation of duties, access controls, authorization requirements).
Detective controls (A) identify errors after they have occurred (e.g.,
reconciliations, audits). Corrective controls (B) remediate errors after detection
(e.g., backup recovery). Compensating controls (D) are alternative controls when
primary controls are not feasible.
Question 4
During an audit, the IS auditor discovers that management has overridden a key IT
control. What is the auditor's MOST appropriate response?
A. Accept the override since management has the authority to make such decisions
B. Document the override, assess its impact on the audit opinion, and report it to
the appropriate governance body
C. Ignore the override if it was a one-time occurrence
D. Immediately terminate the audit engagement
Correct Answer: B
Rationale: Management override of controls is a significant red flag that must be
documented and assessed for its impact on the overall control environment. The
auditor should report the override to the appropriate governance body (e.g., audit
committee). Accepting the override (A) violates professional standards. Ignoring it
(C) is negligent. Terminating the engagement (D) is an extreme overreaction
without following proper escalation procedures.
Question 5
An IS auditor is using Computer-Assisted Audit Techniques (CAATs) to analyze a
large dataset. Which of the following is a PRIMARY benefit of using CAATs?
, A. They eliminate the need for auditor judgment
B. They enable the auditor to analyze 100% of the population rather than just a
sample
C. They are less expensive than manual testing
D. They guarantee the detection of all errors
Correct Answer: B
Rationale: A key benefit of CAATs is the ability to analyze entire populations of
data, providing greater assurance than sampling alone. CAATs do not eliminate
auditor judgment (A) — judgment is still required to interpret results. They may
not always be less expensive (C). They do not guarantee detection of all errors (D).
Question 6
An IS auditor is reviewing the organization's audit evidence collection process.
Which of the following is the MOST reliable type of audit evidence?
A. Oral representations from management
B. Internally generated documents
C. Externally generated documents (e.g., vendor invoices, bank statements)
D. Analytical procedures
Correct Answer: C
Rationale: Externally generated documents are generally considered more reliable
than internally generated evidence because they come from independent sources
outside the organization. Oral representations (A) are the least reliable. Internally
generated documents (B) are less reliable than external ones. Analytical procedures
(D) provide circumstantial evidence.
Question 7
An IS auditor is preparing an audit report. Which of the following is a key element
that should be included?
A. The personal opinions of the auditor about management
B. The scope, objectives, findings, and recommendations of the audit
