CISA
Certified Information Systems Auditor
ISACA's flagship audit credential. Covers the audit process, IT governance, systems acquisition, operations, and information asset protection.
- Exam length
- 240 min
- Pass score
- 450/800 (scaled)
- Questions
- 150
- Domains
- 5
Suggested prep: 8–12 weeks · Difficulty: Professional
Domain breakdown
Official weights from the ISACA exam outline. We track your mastery on each domain individually so you know where to focus.
Try a real CISA question
Pulled straight from the free tier. Every question in the bank cites a public source you can verify.
Which item should be defined and agreed upon before audit fieldwork begins?
- AThe objectives and scope of the engagement
- BThe exact wording of the final audit opinion
- CThe statistical sample sizes for every substantive test
- DThe detailed findings and their assigned risk ratings
Show answer and explanation
Correct answer
The objectives and scope of the engagement
Agreeing the objectives and scope up front bounds the engagement and lets both parties plan resources and access, which is the core output of the planning phase. Findings and their ratings only exist after testing, detailed sample sizes are determined once scope and risk are set, and the final opinion cannot be drafted before the work is performed.
Source: NIST SP 800-115: Technical Guide to Information Security Testing and Assessment
CISA FAQ
How many questions are on the CISA exam?
The ISACA CISA exam has 150 questions and runs 240 minutes. A passing score is 450/800 (scaled).
What domains does CISA cover?
5 domains, per the official ISACA outline: Information Systems Auditing Process (18%), Governance and Management of IT (18%), IS Acquisition, Development, and Implementation (12%), IS Operations and Business Resilience (26%), Protection of Information Assets (26%).
How long should I study for CISA?
Typical prep time is 8–12 weeks, depending on your experience. TierOne's spaced-repetition queue is built for short daily sessions, so progress compounds even on a busy schedule.
Can I try CISA practice questions for free?
Yes. The free tier includes 50 real CISA practice questions with cited sources, the Question of the Day, and the AI tutor (5 explanations per day). No credit card required.
Is there a pass guarantee?
Yes. If you fail your CISA exam after 30 or more days on Pro, send us your score report and choose 3 free months or a full refund.
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