PECB · ISMS implementation

ISO 27001 Lead Implementer exam preparation

Practice for the PECB ISO/IEC 27001 Lead Implementer exam with adaptive questions, full-length mock exams, and a readiness score that tells you when you're actually ready to pass.

Before you register: There is no prerequisite to sit the ISO/IEC 27001 Lead Implementer exam — but passing it is not the same as being certified.

One exam feeds four PECB credentials, separated by experience rather than by a different paper. Provisional Implementer requires no experience at all; Implementer requires two years of work experience (one in information security management) and 200 hours of ISMS project activity; Lead Implementer requires five years (two in information security management) and 300 hours; Senior Lead Implementer requires ten years (seven in information security management) and 1,000 hours. All four also require signing the PECB Code of Ethics. Confirm the current requirements with PECB before deciding which credential you are working toward.

ISO 27001 Lead Implementer exam at a glance

Issuer

PECB

Questions

Essay-type exam: 12 questions. Multiple-choice exam: standalone and scenario-based questions

Scoring

Percentage score

Pass mark

70% to pass

Format

Open-book; PECB runs this credential as either an essay-type or a multiple-choice exam

ISO 27001 Lead Implementer exam domains

The ISO 27001 Lead Implementer exam covers 7 domains:

Fundamental principles and concepts of an information security management system
Information security management system requirements
Planning of an ISMS implementation based on ISO/IEC 27001
Implementation of an ISMS based on ISO/IEC 27001
Monitoring and measurement of an ISMS based on ISO/IEC 27001
Continual improvement of an ISMS based on ISO/IEC 27001
Preparing for an ISMS certification audit

What each ISO 27001 Lead Implementer domain covers

Fundamental principles and concepts of an ISMS. The vocabulary the rest of the exam assumes: confidentiality, integrity and availability, the difference between information and an asset, how vulnerability, threat and risk relate, and how controls are classified by type and by function.

Information security management system requirements. What ISO/IEC 27001 actually requires, clause by clause, as opposed to what Annex A suggests. The distinction between a requirement you must meet and a control you may select is the one candidates most often blur.

Planning of an ISMS implementation. Scoping, gap analysis, leadership commitment and the risk assessment approach — the decisions made before any control is chosen, and the ones an auditor will later trace back to.

Implementation of an ISMS. Turning the plan into operating reality: the statement of applicability, risk treatment, documented information, competence and awareness, and the controls themselves.

Monitoring and measurement of an ISMS. Evidence that the system works — monitoring, internal audit and management review, and the difference between measuring an activity and measuring an outcome.

Continual improvement of an ISMS. Nonconformity, correction versus corrective action, and how improvement is demonstrated rather than asserted.

Preparing for an ISMS certification audit. What the certification body will ask for, how the stage one and stage two audits differ, and how to have evidence ready in the form an auditor expects it.

ISO 27001 Lead Implementer exam facts

Two exam types: PECB runs this credential as either an essay-type exam or a multiple-choice exam. They are different papers with different question counts — check which one your training partner has booked you for.
Essay-type exam: Twelve questions, marked out of 75 points.
Multiple-choice exam: Standalone questions mixed with scenario-based sets, where one scenario is followed by five related questions.
Answer options: Three per multiple-choice question: one correct response and two distractors. Not four, as on most ISACA exams.
Passing score: 70% on either exam type.
Open book: Permitted: a hard copy of the ISO/IEC 27001 standard, your training course materials, and personal notes taken during the course.
Exam duration: PECB does not publish a fixed duration for this exam in either candidate handbook. Candidates sitting a Lead-level exam in a language other than their native one are granted an extra 30 minutes.
Retakes: There is no limit on the number of attempts, though PECB applies waiting periods between them. A failed result lists the domains you performed poorly in.
Certification: Passing the exam earns a credential only once the matching experience and project hours are evidenced and the Code of Ethics is signed.

How CertPrepX helps you pass the ISO 27001 Lead Implementer

Adaptive practice that focuses on your weakest ISO 27001 Lead Implementer domains.
Full-length, timed mock exams that mirror the real ISO 27001 Lead Implementer format and scoring.
A readiness score per domain, so you know when you're ready to sit the exam.
Weak-area review and spaced repetition to lock in what you miss.
A personalized study plan built around your target ISO 27001 Lead Implementer exam date.

CertPrepX practice for this exam is written to the seven published competency domains, with scenario sets that mirror the five-questions-per-scenario shape of the multiple-choice paper.

Who the ISO 27001 Lead Implementer is for

Consultants, managers, and IT/security professionals responsible for planning and implementing an ISO/IEC 27001 information security management system. No prior credential is required to sit the exam.

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ISO 27001 Lead Implementer exam FAQ

What is the passing score for the PECB ISO/IEC 27001 Lead Implementer exam?

Seventy percent, on either exam type.

How many questions are on the exam?

It depends which paper you sit. The essay-type exam has twelve questions marked out of 75 points. The multiple-choice exam mixes standalone questions with scenario sets, where one scenario is followed by five related questions.

Is the ISO 27001 Lead Implementer exam open book?

Yes. PECB permits a hard copy of the ISO/IEC 27001 standard, your training course materials, and notes you took during the course. Open book does not make it easier — the questions test whether you can apply ISMS concepts to a situation, which cannot be looked up.

How long is the exam?

PECB does not publish a duration in either candidate handbook. If you sit a Lead-level exam in a language that is not your native one, you are granted an extra 30 minutes.

Do I need experience to sit the exam?

No. Anyone can sit it. Experience determines which credential you receive afterwards: Provisional Implementer requires none, while Implementer, Lead Implementer, and Senior Lead Implementer require increasing work experience and ISMS project hours.

What is the difference between Lead Implementer and Lead Auditor?

Lead Implementer is about building and running an ISMS. Lead Auditor is about auditing one — evidence, findings, and audit programmes. They are separate exams with different competency domains, and most people choose based on whether they implement or audit.

What does the exam cover?

Seven competency domains: ISMS fundamentals, the ISO/IEC 27001 requirements themselves, planning an implementation, implementing it, monitoring and measurement, continual improvement, and preparing for the certification audit.

Sources

Exam details on this page come from PECB’s own published materials and were last verified on 24 August 2026. PECB can change exam policy at any time, so confirm current requirements with PECB before you register.