ISO-IEC-27001 Lead Implementer Certification Exam Guide + Practice Questions

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Comprehensive ISO-IEC-27001 Lead Implementer certification exam guide covering exam overview, skills measured, preparation tips, and practice questions with detailed explanations.

What is ISO-IEC-27001 Lead Implementer Exam?


The PECB Certified ISO-IEC-27001 Lead Implementer certification validates a professional's ability to plan, implement, manage, and continually improve an Information Security Management System (ISMS) in accordance with ISO/IEC 27001.

ISO-IEC-27001 Lead Implementer Exam Format


Number of Questions: 80 multiple-choice questions
Exam Duration: 3 hours
Passing Score: 70%

Who Should Take the ISO-IEC-27001 Lead Implementer Exam?


This certification is designed for professionals involved in the implementation and management of information security management systems, including:

●Managers or consultants responsible for implementing an ISMS within an organization
●Project managers, consultants, and expert advisors aiming to master ISO/IEC 27001 implementation practices
●Individuals responsible for ensuring ongoing compliance with ISO/IEC 27001 requirements
●Members of an ISMS implementation or information security governance team

Exam Competency Domains


The PECB ISO-IEC-27001 Lead Implementer exam complies with the PECB Examination and Certification Program (ECP) and evaluates knowledge across the following domains:

Domain 1: Fundamental Principles and Concepts of an ISMS
Covers core information security concepts, ISMS objectives, and the structure and purpose of ISO/IEC 27001.

Domain 2: Information Security Management System Requirements
Focuses on understanding ISO/IEC 27001 clauses, mandatory requirements, and Annex A controls.

Domain 3: Planning an ISMS Implementation
Addresses risk assessment, scope definition, asset identification, and implementation planning aligned with ISO/IEC 27001.

Domain 4: ISMS Implementation
Evaluates the ability to implement policies, procedures, controls, and risk treatment plans effectively.

Domain 5: Monitoring and Measurement of an ISMS
Covers performance evaluation, internal audits, management reviews, and key security metrics.

Domain 6: Continual Improvement of an ISMS
Focuses on corrective actions, nonconformity handling, and ongoing ISMS improvement processes.

Domain 7: Preparation for an ISMS Certification Audit
Assesses readiness for external audits, audit evidence preparation, and interaction with certification bodies.

How to Prepare for ISO-IEC-27001 Lead Implementer Exam?


Preparing for the ISO/IEC 27001 Lead Implementer exam requires both theoretical understanding and practical insight into ISMS implementation.

Start by developing a solid understanding of the ISO/IEC 27001 standard, including its clauses, Annex A controls, and the overall structure of an Information Security Management System. Candidates should be familiar with the full ISMS lifecycle, from initial planning and risk assessment to implementation, monitoring, and continual improvement.

Hands-on experience with ISMS implementation activities is highly recommended. This includes defining ISMS scope, conducting risk assessments, selecting and implementing security controls, developing policies and procedures, and supporting internal audits and management reviews.

In addition, reviewing PECB-aligned training materials, implementation frameworks, and real-world case scenarios helps reinforce how ISO/IEC 27001 requirements are applied in organizational contexts. Time management and familiarity with multiple-choice exam formats are also important for success in the exam.

Practice Questions for the ISO/IEC 27001 Lead Implementer Exam


Using practice questions is an effective way to assess exam readiness and reinforce key concepts covered in the ISO/IEC 27001 Lead Implementer exam.

Practice questions help candidates become familiar with the exam structure, question style, and difficulty level, while also identifying knowledge gaps across ISMS planning, implementation, monitoring, and improvement. High-quality practice questions are typically scenario-based and reflect real-world ISMS challenges rather than simple definitions.

Question#1

Scenario 8: SecureLynx is one Of the largest cybersecurity advisory and consulting companies that helps private sector organizations prevent security threats. improve security systems. and achieve business
SecureLynr is committed to complying with national and international standards to enhance the company'S resilience and credibility_ SecureLynx has Started implementing an ISMS based on ISO/IEC 27001 as part of its relentless pursuit of security.
As part of the internal audit activities. the top management reviewed and approved the audit objectives to assess the effectiveness of SecureLynx•s ISMS During the audit, the internal auditor evaluated whether top management Supports activities associated with the ISMS and if the toles and responsibilities Of relevant parties are Clearly defined. This rigorous examination is a testament to SecureLynx'S commitment to continuous improvernent and alignment of security measures with organizational goals.
SecureLynx employs an innovative dashboard that visually represents implemented processes and controls to ensure transparency and accountability within the Organization. This tool Offers stakeholders a real-time overview of security measures. empowering them to make informed decisions and swiftly respond to emerging threats. As part of this initiative, Paula was appointed to a new position entrusted with the responsibility Of collecting, recordlng, and Stoting data to measure the effectiveness Of the ISMS-Furthermore, SecureLynx conducts management reviews every six months to ensure its Systems are robust and continually improving. These reviews serve as a crucial mechanism for assessing the efficacy Of security measures and identifying areas for enhancement. SecureLynx's dedication to implementing and maintaining a robust ISMS exemplifies its commitment to innovation and Client satisfaction. Based on the scenario above, answer the following question.
Based on scenario 8, has SecureLynx appropriately conducted management reviews?

A. No, management reviews should only occur when there are significant changes to the company’s ISMS
B. No, ISO/IEC 27001 requires management reviews to be conducted annually
C. Yes, management reviews are intended to be conducted periodically

Explanation:
ISO/IEC 27001:2022 requires that management reviews be conducted at planned intervals, not only annually or when there are changes. Reviews every six months, as in SecureLynx, are not only compliant but a best practice.
“Top management shall review the organization’s ISMS at planned intervals to ensure its continuing suitability, adequacy, effectiveness, and alignment with strategic direction.” ― ISO/IEC 27001:2022, Clause 9.3

Question#2

An employee at Reyae Ltd. unintentionally sent an email containing critical business strategies to a competitor due to an autofill email suggestion error. The email included proprietary trade secrets and confidential client data. Upon receiving the email, the competitor altered the information and attempted to use it to mislead clients into switching services.
Which of the following statements correctly describes the security principles affected in this situation?

A. Reyae Ltd.'s confidentiality was compromised first, while the competitor's actions led to an integrity violation
B. Reyae Ltd.'s integrity was compromised first, while the competitor's actions led to an availability violation
C. Reyae Ltd.'s availability was compromised first, while the competitor's actions led to an integrity violation

Explanation:
The initial error (sending confidential data to a competitor) is a classic breach of confidentiality (unauthorized disclosure of information).
The competitor altering and misusing the information is a violation of integrity (unauthorized modification or falsification of data).
"Confidentiality is the property that information is not made available or disclosed to unauthorized individuals, entities, or processes. Integrity is the property of safeguarding the accuracy and completeness of assets."
― ISO/IEC 27000:2018, 3.6 & 3.8

Question#3

Jane is a developer looking to deploy an application she created using a programming language supported by her cloud service provider. She does not need to manage the underlying infrastructure like servers or storage, but needs control over the application and its environment.
Which cloud service model does Jane need?

A. Infrastructure as a Service
B. Platform as a Service
C. Software as a Service

Explanation:
Platform as a Service (PaaS) provides a platform allowing customers to develop, run, and manage applications without dealing with the infrastructure. The developer manages the application and its environment; the provider manages infrastructure.
“PaaS allows customers to deploy applications using supported programming languages and tools without managing the underlying infrastructure.”
― ISO/IEC 17788:2014, Section 7.3; ISO/IEC 27017:2015, Section 6.3

Question#4

NeuroTrustMed is a leading medical technology company based in Seoul, South Korea. The company specializes in developing AI-assisted neuroimaging solutions used in early diagnosis and treatment planning for neurological disorders. As a data-intensive company handling sensitive patient health records and medical research data, NeuroTrustMed places a strong emphasis on cybersecurity and regulatory compliance. The company has maintained an ISO/IEC 27001-certified ISMS for the past three years. It continuously reviews and improves its ISMS to address emerging threats, support innovation in medical diagnostics, and maintain stakeholder trust. As part of its commitment to continual improvement, NeuroTrustMed actively tracks potential nonconformities, performs root-cause analyses, implements corrective and preventive actions, and ensures all changes are documented and aligned with the company’s strategic objectives. When a new data protection regulation came into effect affecting cross-regional data handling, the information security team conducted a gap assessment between current policies and the new regulation. Then, it updated relevant documentation and processes to meet compliance. Following these revisions, NeuroTrustMed updated the ISMS documentation and added a new entry in the improvement register. The register, maintained in the form of a structured spreadsheet, included a unique change number, a description of the update, and a high-priority classification due to legal compliance, the dates of initiation and completion, and the sign-off by the information security manager. Around the same period, during a scheduled management review, the information security team also identified a pattern of onboarding errors. While these had not resulted in any data breaches, they posed a risk of unauthorized access. In response, the onboarding procedure was revised and an automated verification step was added to ensure accuracy before access is granted. To understand the underlying cause, the team collected data on the provisioning process. They analyzed process logs, interviewed onboarding staff, and traced access errors back to a misconfigured step in the HR-to-IT handover workflow. The team validated this finding through test cases before implementing any changes. Once confirmed, the information security team documented the nonconformity in the ISMS log. The documentation included a description of the issue, impacted systems, affected users, and a brief risk assessment of potential consequences related to access management. Based on the scenario above, answer the following question.
Refer to scenario 10, is the composition of the certification decision committee acceptable?

A. Yes, as persons that make the decision for certification are different from those who carried out the audit.
B. No, the committee should have included only members from the audit team and no other experts that were not part of the audit
C. No, the committee must include one member from the audit team and other individuals working for the certification body

Explanation:
In certification schemes for ISO/IEC 27001, it is a fundamental requirement that the certification decision is made by individuals who did not participate in the audit itself. This separation ensures objectivity, independence, and credibility of the certification decision.
While ISO/IEC 27001 defines ISMS requirements, the governance of certification decisions is addressed in ISO/IEC 17021-1, which requires that: The audit team does not make the certification decision
The decision is taken by competent personnel independent of the audit
Scenario 10 indicates that the certification decision committee consisted of individuals separate from the audit team, which satisfies this requirement.
Option B is incorrect because decision committees should not consist only of audit team members. Option C is incorrect because including audit team members in the decision-making body would compromise independence.
This structure also aligns with ISO/IEC 27006, which governs certification bodies auditing ISMSs and reinforces the need for impartial certification decisions.

Question#5

Nimbus Route, a cloud-native logistics optimization company based in the Netherlands, offers Al-driven route planning fleet management tools, and real time shipment tracking solutions to clients across Europe and North America. To safeguard sensitive logistics data and ensure resilience across its cloud services. Nimbus Route has implemented an information security management system (ISMS) based on ISO/lEC 27001. The company is also integrating intelligent transport systems and predictive analytics to increase operational efficiency and sustainability. As part of the ISMS implementation process, the company is determining the competence levels required to manage its ISMS. It has considered various factors when defining these competence requirements, including technological advancements, regulatory requirements, the company's mission. strategic objectives, available resources. as well as the needs and expectations of its customers. Furthermore, the company has established clear guidelines for internal and external communication related to the ISMS, defining what information to share, when to share it. with whom, and through which channels. However, not all communications have been formally documented: instead, the company classified and managed communication based on its needs. ensuring that documentation is maintained only to the extent necessary for the ISMS's effectiveness To support its expanding digital services and ensure operational scalability. Nimbus Route utilizes virtualized computing resources provided by an external cloud service provider. This setup allows the company to configure and manage its operating systems, deploy applications. and control storage environments as needed while relying on the provider to maintain the underlying cloud environment. To further enhance is predictive capabilities. Nimbus Route is adopting machine learning techniques across several of its core services Specifically, it uses machine learning for route optimization and delivery time estimation, leveraging algorithms such as logistic regression and support vector machines to identify patterns in historical transportation data. As Nimbus Route's ISMS matures, the company has chosen a chased approach to its transition into full operational mode Rather than waiting for a formal launch, individual elements of the ISMS, such as risk treatment procedures, access controls, and audit logging, are being activated progressively as soon as they are developed and approved Based on the scenario above answer the follow rig question.
Did Nimbus Route appropriately determine the competence levels required to support their ISMS?

A. Yes, because Nimbus Route considered only the internal factors, which are the most important for its operations.
B. No, because Nimbus Route did not consider external issues that are relevant to the ISMS
C. Yes, because Numbus Route considered external issues, internal factors, and the needs and expectations of relevant interested parties.

Explanation:
Nimbus Route appropriately determined the competence levels required to support its ISMS, making Option C the correct and verified answer.
ISO/IEC 27001:2022 requires organizations to define competence by considering both internal and external factors, as well as the needs and expectations of relevant interested parties. This requirement is explicitly addressed across several clauses.
Under Clause 7.2 C Competence, the standard requires the organization to:
“determine the necessary competence of person(s) doing work under its control that affects information security performance.”
Determining competence does not occur in isolation.
It must be informed by:
Clause 4.1 C Understanding the organization and its context, which requires identification of internal and external issues relevant to the ISMS.
Clause 4.2 C Understanding the needs and expectations of interested parties, which includes customers, regulators, and partners.
The scenario clearly states that Nimbus Route considered:
Technological advancements (external/internal context),
Regulatory requirements (external issues),
Mission and strategic objectives (internal issues),
Available resources (internal capability),
Customer needs and expectations (interested parties).
This demonstrates full alignment with Clauses 4.1, 4.2, and 7.2.
Option A is incorrect because Nimbus Route did not consider only internal factors.
Option B is incorrect because the scenario explicitly states that external issues were considered. Conclusion: Nimbus Route followed the ISO/IEC 27001:2022 requirements for determining competence in a comprehensive and context-aware manner. Therefore, Option C is 100% correct and verified.

Disclaimer

This page is for educational and exam preparation reference only. It is not affiliated with PECB, ISO 27001, or the official exam provider. Candidates should refer to official documentation and training for authoritative information.

Exam Code: ISO-IEC-27001 Lead ImplementerQ & A: 334 Q&AsUpdated:  2026-01-14

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