249 practice questions for PECB ISO/IEC 27001 Lead Auditor, with full explanations.
Every question comes with the correct answer, the reasoning behind it, and a short note on why each wrong option is wrong. Work through it once with the answers, then again with the questions-only copy under exam conditions.
- 249 questions across all seven Lead Auditor domains
- Answers and explanations for every question, including the wrong options
- A questions-only PDF for timed practice runs
- Instant delivery by email the moment you check out
- Free monthly updates for as long as the exam is live
- Pass or your money back
PECB does not publish a standalone exam price: the exam is bundled into the accredited training course, priced by each PECB partner. This pack is US$39, paid once.
Try 10 questions free before you buy.
Last updated September 2026 · 249 questions
What makes the ISO/IEC 27001 Lead Auditor hard
Lead Auditor tests how an audit runs, not how well you know the standard. Plenty of candidates can recite Annex A and still get caught, because the exam keeps asking a different question.
You are three days into a certification audit and have found something. Is it a nonconformity or an observation? Major or minor? Do you raise it now or gather more evidence first? Will your sample survive the closing meeting, or can the client challenge it? ISO/IEC 27001 defines what good looks like; ISO 19011 defines how to prove it, and that is where the marks are.
The exam is open book and multiple choice, with 70% needed to pass. The seven domains run from ISMS fundamentals through to managing an audit programme, so the audit scenarios need to be familiar well before the day.
About the exam
The ISO/IEC 27001 Lead Auditor is PECB’s certification for professionals who plan, lead and report audits of an Information Security Management System against ISO/IEC 27001, following the auditing guidelines of ISO 19011. It validates the ability to manage an audit team and run an audit programme, not just assess controls.
Exam domains
- Domain 1: Fundamental principles and concepts of an ISMS
- Domain 2: ISMS requirements
- Domain 3: Fundamental audit concepts and principles
- Domain 4: Preparing an ISO/IEC 27001 audit
- Domain 5: Conducting an ISO/IEC 27001 audit
- Domain 6: Closing an ISO/IEC 27001 audit
- Domain 7: Managing an ISO/IEC 27001 audit programme
Open book, multiple choice, scenario based, pass mark 70%. There is no standalone exam price: the exam, the certification application and the first year of the annual maintenance fee are bundled into the accredited training course, which each PECB partner prices itself.








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