CISA Information System Auditing Process Practice Question
According to ISACA IT Audit Standards, which of the following is the MOST important consideration when determining the scope of an IS audit?
⚠ Common exam trap
CISA often tests the risk-based approach; candidates may choose prior audit findings or budget because they seem practical, but risk assessment is the cornerstone of audit scoping.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The risk assessment of the area under review
The most important consideration when determining the scope of an IS audit is the risk assessment of the area under review. ISACA standards emphasize a risk-based approach, where audit resources are directed to areas with the highest risk. This ensures that the audit addresses the most significant threats to the organization.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The availability of audit staff
Why it's wrong here
Staff availability is a resourcing constraint, not a scope determinant; ISACA standards require scope to reflect audit objectives and risk. It is tempting because engagement planning must confirm sufficient competent resources exist, but that feasibility check follows scope definition rather than setting it.
- ✗
The budget approved for the audit
Why it's wrong here
Budget constrains resources available to the audit but does not determine which systems, processes or risks fall inside the audit universe. It is tempting because cost always influences planning, yet ISACA standards require scope to derive from risk assessment and control objectives, with budget following scope rather than defining it.
- ✓
The risk assessment of the area under review
Why this is correct
The risk assessment of the area under review determines where audit effort is directed, so scope is set by the identified risk exposure rather than by convenience, prior-year scope or management preference. This satisfies the stem by making risk the governing consideration when defining what the audit covers.
- ✗
The results of prior audit findings
Why it's wrong here
Prior findings inform risk assessment and may raise areas' priority, but they do not define scope; ISACA standards tie scope to objectives and risk. Reviewing past findings is genuinely useful when planning follow-up or continuous auditing, yet here it merely feeds the risk analysis underpinning scope.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISACA exam blueprint
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