The ISACA Certified Information Systems Auditor (CISA) exam contains 150 multiple-choice questions with a generous 240-minute (4-hour) time limit. The passing score is 450 on a scale of 200-800, utilizing ISACA's scaled scoring model. CISA is recognized globally as the gold standard for IT auditing, control, and assurance professionals, currently held by over 151,000 experts worldwide.
With an average of 1 minute and 36 seconds per question, time pressure is rarely the primary challenge on the CISA exam. Instead, the real difficulty lies in grasping ISACA's distinctive questioning style, which heavily emphasizes the "best" or "most important" auditor action in complex, ambiguous scenarios. Passing CISA requires adopting a strict audit and risk-based mindset.
The CISA exam evaluates your competence across five distinct job practice domains. Understanding this distribution is crucial for focusing your study efforts:
| Domain | % of Exam | ~Questions | Key Topics |
|---|---|---|---|
| 1. IS Auditing Process | 21% | ~32 | Audit planning, risk-based auditing, execution, reporting, follow-up, evidence gathering |
| 2. Governance and Management of IT | 17% | ~26 | IT governance frameworks, strategic alignment, policies, enterprise architecture, risk management |
| 3. IS Acquisition, Development, Implementation | 12% | ~18 | SDLC, project management, post-implementation reviews, change management |
| 4. IS Operations and Business Resilience | 23% | ~35 | IT service management, database admin, disaster recovery (DRP), business continuity (BCP) |
| 5. Protection of Information Assets | 27% | ~41 | Access controls, network security, encryption, physical security, PKI, cyber attacks |
The CISA exam is entirely multiple-choice with exactly four options per question. There are no performance-based questions (PBQs), simulations, or drag-and-drop elements. However, ISACA questions are famously tricky. You must adapt to the "ISACA way":
With 240 minutes for 150 questions, rushing is unnecessary. A structured approach works best:
| Certification | Questions | Time Limit | Passing Score | Cost | Primary Focus |
|---|---|---|---|---|---|
| CISA (ISACA) | 150 | 240 min | 450/800 | $575-$760 | IS Auditing & Assurance |
| CISM (ISACA) | 150 | 240 min | 450/800 | $575-$760 | Security Management |
| CRISC (ISACA) | 150 | 240 min | 450/800 | $575-$760 | IT Risk Management |
| CISSP (ISC)² | 125-175 | 240 min | 700/1000 | $749 | Broad Information Security |
| CIA (IIA) | 125 (per part) | 150 min | 600/750 | Varies | Internal Auditing (Broad) |
CISA vs. CISM: CISA is designed for auditors who evaluate and report on IT controls. CISM is for managers who design and oversee security programs. If your job involves checking compliance and evaluating risk controls, pursue CISA. If you build security strategies, pursue CISM.
Candidates typically need 8-12 weeks of study at 2-3 hours daily. Preparation is heavily reliant on practice questions:
The exam contains 150 multiple-choice questions to be completed in 240 minutes (4 hours). This gives you about 1 minute and 36 seconds per question.
450 on a scaled score of 200-800. ISACA uses a scaled model where question difficulty affects scoring, meaning you cannot translate this to a simple percentage.
CISA is narrower in scope (5 domains focused on auditing) but requires a deep understanding of audit methodology. CISSP is generally considered harder because it covers 8 broad domains of security engineering and management.
You need 5 years of professional IS audit, control, or security experience. Substitutions are available (up to 3 years) for specific degrees or other certifications.
If you have an audit background, 8-12 weeks at 2-3 hours daily is typical. If you have an IT background but no audit experience, expect 12-16 weeks to fully grasp the auditor mindset.
No. The CISA exam is entirely multiple-choice with scenario-based questions. There are no command-line simulations or PBQs.
$575 for ISACA members and $760 for non-members. ISACA membership typically costs $135 plus local chapter fees, making the member route cost-effective.
Yes. To maintain your CISA, you must earn a minimum of 20 Continuing Professional Education (CPE) hours annually, reach 120 CPEs over a 3-year cycle, and pay an annual maintenance fee.
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