PECB ISO/IEC 27001 Lead Implementer Exam Practice Questions, practice question pack
PECB · ISO/IEC 27001 Lead Implementer

PECB ISO/IEC 27001 Lead Implementer Exam Practice Questions

285 questionsInstant PDF downloadUpdated September 2026

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Three of the 285 questions in this pack

Question 1

Scenario 1: HealthGenic is a pediatric clinic that monitors the health and growth of individuals from infancy to early adulthood using a web-based medical software. The software is also used to schedule appointments, create customized medical reports, store patients’ data and medical history, and communicate with all the involved parties, including parents, other physicians, and the medical laboratory staff. Last month, HealthGenic experienced a number of service interruptions due to the increased number of users accessing the software. Another issue the company faced while using the software was the complicated user interface, which the untrained personnel found challenging to use. The top management of HealthGenic immediately informed the company that had developed the software about the issue. The software company fixed the issue; however, in the process of doing so, it modified some files that comprised sensitive information related to HealthGenic’s patients. The modifications that were made resulted in incomplete and incorrect medical reports and, more importantly, invaded the patients’ privacy. Based on the scenario above, answer the following question:Which of the following indicates that the confidentiality of information was compromised?

  1. Service interruptions due to the increased number of users
  2. Invasion of patients’ privacy
  3. Modification of patients’ medical reports
Show answer and explanation

Correct answer: B. Invasion of patients’ privacy

Confidentiality is the property that information is not made available or disclosed to unauthorized individuals or entities. The scenario states that the modifications invaded the patients' privacy, which means sensitive patient information was exposed to parties who had no right to see it. That exposure is the confidentiality breach.

Why the other options are wrong

  • A. Service interruptions stop authorized users from reaching the software, which is a loss of availability.
  • C. Modified medical reports that are incomplete and incorrect describe a loss of integrity, because the accuracy and completeness of the data was destroyed.

Question 2

Based on scenario 1, what is a potential impact of the loss of integrity of information in HealthGenic?

  1. Disruption of operations and performance degradation
  2. Incomplete and incorrect medical reports
  3. Service interruptions and complicated user interface
Show answer and explanation

Correct answer: B. Incomplete and incorrect medical reports

Integrity is the property of accuracy and completeness. When the software company modified the patient files, the resulting reports were incomplete and incorrect, so the data no longer reflected reality. Clinicians acting on wrong reports is precisely the impact of an integrity failure.

Why the other options are wrong

  • A. Disruption of operations and performance degradation is what happens when a system becomes unavailable, not when data becomes inaccurate.
  • C. Service interruptions are an availability impact and a complicated user interface is a usability weakness, so neither describes integrity.

Question 3

Intrinsic vulnerabilities, such as the _____________, are related to the characteristics of the asset. Refer to scenario 1.

  1. Software malfunction
  2. Service interruptions
  3. Complicated user interface
Show answer and explanation

Correct answer: C. Complicated user interface

An intrinsic vulnerability is a weakness that belongs to the asset itself, as opposed to an extrinsic one that comes from the environment around it. The asset here is the medical software, and the complicated user interface is a characteristic built into that software, so it is intrinsic.

Why the other options are wrong

  • A. A software malfunction is an event that occurs rather than a standing characteristic of the asset.
  • B. Service interruptions are a consequence that was suffered, so they are an impact rather than a vulnerability of the asset.

See all 10 free questions Get the full pack, US$39

285 practice questions for PECB ISO/IEC 27001 Lead Implementer, with full explanations.

Every question comes with the correct answer, a clear explanation, and a note on why each other option is wrong. The set is mapped to the published exam objectives across all seven competency domains.

  • 285 questions across all seven ISO/IEC 27001 Lead Implementer 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, which each PECB partner prices itself, and failing means paying a retake fee. This pack is US$39, paid once, and refunded if you fail.

Try 10 questions free before you buy.

Last updated September 2026 · 285 questions

What makes the ISO/IEC 27001 Lead Implementer hard

It is a scenario exam, not a memory test. Each question is built on a case study: a company rolling out an ISMS, and you choose the correct next step for where it is in the process.

The distinctions it tests are the ones that blur in practice: Clause 6 risk treatment against Clause 8 operational planning, and Annex A control selection against the justification in the Statement of Applicability. Candidates who arrive with a Foundation-level mindset tend to underestimate this, because the exam checks whether you can apply the standard, not recite it.

It is open book and multiple choice, with 70% needed to pass. The seven domains run from ISMS fundamentals to preparing for the certification audit, and this pack covers each of them so the scenario logic is familiar before exam day.

About the exam

The ISO/IEC 27001 Lead Implementer is PECB’s certification for professionals who design, implement and manage an Information Security Management System (ISMS) based on ISO/IEC 27001. It validates the ability to lead an ISMS implementation team from initiation through to readiness for the certification audit.

Exam domains

  • Domain 1: Fundamental principles and concepts of an ISMS
  • Domain 2: ISMS requirements
  • Domain 3: Planning of an ISMS implementation based on ISO/IEC 27001
  • Domain 4: Implementation of an ISMS based on ISO/IEC 27001
  • Domain 5: Monitoring and measurement of an ISMS based on ISO/IEC 27001
  • Domain 6: Continual improvement of an ISMS based on ISO/IEC 27001
  • Domain 7: Preparation for an ISMS certification audit

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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Questions before you buy

What do I get when I buy the PECB ISO/IEC 27001 Lead Implementer pack?

285 practice questions as a PDF, each with the correct answer, a full explanation and a note on why the other options are wrong, plus a separate questions-only PDF for timed practice.

How quickly do I receive it?

Straight away. The full PDF and a questions-only copy are emailed to you the moment your payment goes through, and the same links are on your order page.

Is there a free sample?

Yes. Ten questions from this pack, with answers and explanations, are free on this page and as a PDF, so you can judge the quality before you pay.

Are updates included?

Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.

What if I fail the exam?

We refund the pack. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.

Can I share it with colleagues?

Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.

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