| Exam Code | ISO-IEC-27001-Lead-Auditor |
| Exam Name | ISO/IEC 27001 Lead Auditor |
| Vendor | PECB |
| Total Questions | 368 |
| Last Updated | 26-Oct, 2026 |
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Free ISO-IEC-27001-Lead-Auditor Practice Questions
Explore 10 free practice questions for the PECB ISO-IEC-27001-Lead-Auditor exam and review the answers and explanations to support your preparation.
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Question 1
Multiple answersDuring an opening meeting of a Stage 2 audit, the Managing Director of the client organisation invites the audit team to view a new company video lasting 45 minutes. Which two of the following responses should the audit team leader make?
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Option A:Correct
Advise the Managing Director that the audit team has to keep to the planned schedule
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Option B:Correct
State that the audit team leader will stay behind after the opening meeting to view the video on behalf of the team
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Option C:Correct
Invite the Managing Director to the auditors' hotel for a viewing that evening.
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Option D:Correct
Suggest that the video could be viewed during a refreshment break
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Option E:Correct
State that the audit team will make a decision on the viewing at a later time
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Option F:Correct
Advise the Managing Director that the audit team agrees to his request
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A, D
Explanation
According to ISO 19011:2018, which provides guidelines for auditing management systems, an opening meeting is a formal communication between the audit team and the auditee at the start of an audit1.The purpose of the opening meeting is to confirm the audit objectives, scope and criteria, introduce the audit team and their roles, confirm the audit plan and logistics, explain the audit methods and procedures, and establish the communication channels1. Therefore, if the Managing Director of the client organization invites the audit team to view a new company video lasting 45 minutes during the opening meeting of a Stage 2 audit, the audit team leader should respond in a way that does not compromise the effectiveness and efficiency of the audit or create any misunderstanding or conflict with the auditee.Two possible ways to respond are to advise the Managing Director that the audit team has to keep to the planned schedule, as there may be limited time and resources available for the audit; or to suggest that the video could be viewed during a refreshment break, if it is relevant and useful for the audit and does not interfere with other audit activities1. The other options are not appropriate responses for the audit team leader to make in this situation.For example, stating that the audit team leader will stay behind after the opening meeting to view the video on behalf of the team may imply that the video is not important or relevant for the rest of the audit team; inviting the Managing Director to the auditors' hotel for a viewing that evening may create an impression of bias or favouritism; stating that the audit team will make a decision on the viewing at a later time may be vague or indecisive; and advising the Managing Director that the audit team agrees to his request may result in wasting valuable audit time or losing focus on the audit objectives1.References:ISO 19011:2018 - Guidelines for auditing management systems
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Question 2
Multiple answersWhich two of the following statements are true?
The benefit of certifying an ISMS is to show the accreditation certificate on the website.
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Option A:Correct
The purpose of an ISMS is to demonstrate compliance with regulatory requirements.
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Option B:Correct
The purpose of an ISMS is to apply a risk management process for preserving information security.
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Option C:Correct
The benefits of implementing an ISMS primarily result from a reduction in information security risks.
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Option D:Correct
The benefit of certifying an ISMS is to increase the number of customers.
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Option E:Correct
The purpose of an ISMS is to demonstrate awareness of information security issues by management.
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A, B
Explanation
The benefits of implementing an ISMS primarily result from a reduction in information security risks. E. The purpose of an ISMS is to apply a risk management process for preserving information security. : According to the ISO 27001 standard, the benefits of implementing an ISMS include the following1:
Assuring customers and other stakeholders of the confidentiality, integrity and availability of information Enhancing the ability to respond to information security incidents and minimize their impacts Improving the governance and management of information security Reducing the costs and losses associated with information security breaches Increasing the competitiveness and reputation of the organization.
Complying with legal, regulatory and contractual obligations The purpose of an ISMS is to provide a systematic approach to managing information security risks, based on the Plan-Do-Check-Act (PDCA) cycle1. The ISMS enables the organization to establish, implement, maintain and continually improve its information security performance, in alignment with its business objectives and the needs and expectations of interested parties1. The ISMS consists of the following elements1:
The information security policy and objectives
The scope and boundaries of the ISMS
The processes and procedures for information security risk assessment and treatment
The resources and competencies for information security
The roles and responsibilities for information security
The performance evaluation and improvement of the ISMS
The internal and external communication and awareness of the ISMS References:
ISO/IEC 27001:2013, Information technology --- Security techniques --- Information security management systems --- Requirements, clauses 1, 4, 5, 6, 7, 8, 9 and 10
PECB Candidate Handbook ISO 27001 Lead Auditor, pages 9-11
ISO/IEC 27001:2013 Information Security Management Standards
4 Key Benefits of ISO 27001 Implementation | ISMS.online
ISO/IEC 27001:2022
An Introduction to the ISO 27001 ISMS | Secureframe
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Question 3
Single answerWhich type of audit requires that the auditee and audit team agree on remote access protocols before conducting the audit?
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Option A:Correct
Virtual
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Option B:Correct
Internal
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Option C:Correct
External
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A
Explanation
Comprehensive and Detailed In-Depth
A . Correct Answer:
Virtual audits require predefined remote access protocols to ensure secure, authorized
connections for data review.
ISO 19011:2018 provides guidelines for virtual auditing security measures.
B . Incorrect:
Internal audits may use remote access, but agreement is not mandatory.
C . Incorrect:
External audits may involve remote access but do not require predefined agreements in all cases.
Relevant Standard Reference:
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Question 4
Multiple answersWhich two of the following are examples of audit methods that 'do not' involve human interaction?
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Option A:Correct
Conducting an interview using a teleconferencing platform
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Option B:Correct
Performing a review of auditees procedures in preparation for an audit
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Option C:Correct
Reviewing the auditee's response to an audit finding
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Option D:Correct
Analysing data by remotely accessing the auditee's server
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Option E:Correct
Observing work performed by remote surveillance
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Option F:Correct
Confirming the date and time of the audit
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B, D
Explanation
Audit methods are the techniques and procedures that auditors use to collect and evaluate audit
evidence. Audit methods can be classified into two categories: those that involve human
interaction and those that do not. Human interaction methods are those that require direct or
indirect communication with the auditee or other relevant parties, such as interviews,
questionnaires, surveys, observations, or walkthroughs. Non-human interaction methods are
those that do not require any communication with the auditee or other parties, such as document
reviews, data analysis, or remote surveillance.
Some examples of audit methods that do not involve human interaction are:
Performing a review of auditee's procedures in preparation for an audit: This method involves
examining the auditee's documented information, such as policies, processes, records, or reports,
to verify their adequacy and effectiveness in meeting the audit criteri
a. The auditor does not need to interact with the auditee or anyone else to perform this method.
Analysing data by remotely accessing the auditee's server: This method involves accessing and
processing the auditee's data, such as performance indicators, logs, metrics, or statistics, to
verify their accuracy and reliability in meeting the audit criteria. The auditor does not need to
interact with the auditee or anyone else to perform this method.
ISO/IEC 27001:2022 Lead Auditor (Information Security Management Systems) objectives and
content fromQuality.organdPECB
ISO 19011:2018 Guidelines for auditing management systems [Section 6.2.2]
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Question 5
Single answerWhat is the difference between a restricted and confidential document?
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Option A:Correct
Restricted - to be shared among an authorized group Confidential - to be shared among named individuals
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Option B:Correct
Restricted - to be shared among named individuals Confidential - to be shared among an authorized group
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Option C:Correct
Restricted - to be shared among named individuals Confidential - to be shared across the organization only
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Option D:Correct
Restricted - to be shared among named individuals Confidential - to be shared with friends and family
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
The difference between a restricted and confidential document is that a restricted document is to be shared among named individuals, while a confidential document is to be shared among an authorized group. Restricted and confidential are examples of information classification levels that indicate the sensitivity and value of information and the degree of protection required for it. Restricted documents contain information that could cause serious damage or harm to the organization or its stakeholders if disclosed to unauthorized persons. Therefore, they should only be accessed by specific individuals who have a legitimate need to know and are authorized by the information owner. Confidential documents contain information that could cause damage or harm to the organization or its stakeholders if disclosed to unauthorized persons. Therefore, they should only be accessed by a defined group of people who have a legitimate need to know and are authorized by the information owner. ISO/IEC 27001:2022 requires the organization to classify information in terms of legal requirements, value, criticality and sensitivity to unauthorized disclosure or modification (see clause A.8.2.1). Reference: CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor Training Course, ISO/IEC 27001:2022 Information technology — Security techniques — Information security management systems — Requirements, What is Information Classification?
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Question 6
Single answerScenario 4
SendPay is a financial services company specializing in global money transfers through a network of agents and institutions. As a new company in the market, SendPay aims to deliver top-quality services with its fee-free digital platform, launched last year, enabling clients to send and receive money anytime via smartphones and laptops. At that time, SendPay outsourced software operations to an external team, which also managed the company ' s technology infrastructure.
Recently, the company applied for ISO/IEC 27001 certification after having an ISMS in place for almost a year.
During the audit, the auditors focused on reviewing SendPay’s outsourced operations, specifically looking at the software development and technology infrastructure maintenance handled by the outsourced company. They followed a structured approach, which included reviewing and evaluating SendPay’s processes for monitoring the quality of these outsourced operations. This included verifying if the company met its contractual obligations, ensuring proper governance procedures for engaging outsourced entities, and assessing SendPay’s plans in case of expected or unexpected termination of outsourcing agreements.
However, the auditors subtly noted that SendPay’s protocols did not fully address contingencies for unanticipated cancellations of outsourcing agreements. Additionally, a technical expert appointed by SendPay assisted the auditors, providing specific knowledge and expertise related to the outsourced operations being audited.
The audit team calculated the number of training hours employees received on ISMS to ensure alignment with established objectives. They also computed the average resolution time of information security incidents based on a sample taken during the audit, which provided valuable insights into SendPay’s incident management practices. In addition, the auditors evaluated the reliability of the evidence collected during the audit. They considered several factors influencing the reliability of audit evidence. For example, evidence from surveillance cameras provided more objective proof compared to photos. Timing also played a crucial role in reliability, with mechanisms like transaction recording enhancing the credibility of the evidence.
SendPay uses cloud-based platforms to make its operations more efficient and scalable. However, during the audit, the auditors did not request SendPay to provide an inventory of their cloud activities due to resource limitations, relying instead on SendPay’s representations.
Question
Based on Scenario 4, is the involvement of all the parties acceptable during the auditing of the outsourced operations?
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Option A:Correct
Yes, the involvement of all the parties is considered acceptable.
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Option B:Correct
No, the involvement of the technical expert is not acceptable.
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Option C:Correct
No, they should have involved only an observer.
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A
Explanation
The involvement of all the parties described in Scenario 4 is acceptable and aligns with ISO 19011:2018 guidance on auditing management systems, making option A the correct answer. ISO 19011 recognizes that audits may involve different participants beyond the audit team, including technical experts, guides, observers, and representatives of the auditee, provided their roles are clearly defined and managed.
In this scenario, a technical expert appointed by SendPay assisted the auditors by providing specific knowledge and expertise related to the outsourced software operations and technology infrastructure. This is explicitly permitted under ISO 19011, which allows the use of technical experts when specialized knowledge is required that the auditors themselves may not fully possess. The technical expert’s role is to support the audit team with subject-matter expertise, not to influence audit conclusions or replace auditor judgment.
Option B is incorrect because ISO 19011 does not prohibit the involvement of technical experts. On the contrary, their involvement is encouraged when auditing complex or highly technical areas, such as outsourced IT operations and cloud-based services. Option C is also incorrect because limiting participation to observers would not provide the auditors with the necessary technical insight to effectively evaluate outsourced operations.
As long as the audit team leader maintains control of the audit process and ensures independence and objectivity, the involvement of auditors, auditee representatives, and technical experts is appropriate. Therefore, the involvement of all the parties in this audit is acceptable under ISO auditing principles.
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Question 7
Multiple answersAn auditor of organisation A performs an audit of supplier B. Which two of the following actions is likely to represent a breach of confidentiality by the auditor after having identified findings in B ' s information security management system?
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Option A:Correct
Shares the findings with other relevant managers in A
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Option B:Correct
Shares the findings with B ' s Information Security Manager
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Option C:Correct
Shares the findings with A ' s supplier evaluation team
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Option D:Correct
Shares the findings with B ' s other customers
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Option E:Correct
Shares the findings with B ' s certification body
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Option F:Correct
Shares the findings with other relevant managers in B
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A, D
Explanation
According to the PECB Candidate Handbook1, one of the principles of auditing is confidentiality, which means that auditors should respect the confidentiality of information obtained during the audit and not disclose it to unauthorized parties. The handbook also states that auditors should only report audit results to those who have a legitimate need to know, such as the client, the auditee, and the certification body. Therefore, sharing the findings with other relevant managers in A or B’s other customers would be a breach of confidentiality, as they are not directly involved in the audit process or the information security management system of B. Sharing the findings with B’s Information Security Manager or other relevant managers in B would be appropriate, as they are part of the auditee organization and responsible for the implementation and improvement of the ISMS. Sharing the findings with A’s supplier evaluation team or B’s certification body would also be acceptable, as they have a legitimate need to know the audit results for the purpose of supplier selection or certification, respectively. References: 1: PECB Candidate Handbook - ISO 27001 Lead Auditor, pages 7-8.
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Question 8
Multiple answersBased on the identified nonconformities. Company A established action plans that included the detected nonconformities, the root causes, and a general statement regarding each action that would be taken. Is this acceptable?
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Option A:Correct
No, the action plans should include information on the systems that will be installed and how these systems will eliminate the root causes
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Option B:Correct
No, the auditee is required to submit action plans that include detailed information on how every corrective action will be implemented
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Option C:Correct
Yes, the auditee is required to submit action plans that include a general statement regarding the actions that will be taken
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
The auditee is required to submit action plans that include detailed information on how every corrective action will be implemented. General statements are not sufficient; the action plans must specify the corrective actions in detail to ensure that the root causes of the nonconformities are addressed effectively.
[References: ISO/IEC 27001:2013, Clause 10.1 (General) and ISO 19011:2018, Guidelines for auditing management systems., , , ] -
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Question 9
Single answerBased on the identified nonconformities. Company A established action plans that included the detected nonconformities, the root causes, and a general statement regarding each action that would be taken. Is this acceptable?
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Option A:Correct
No, the action plans should include information on the systems that will be installed and how these systems will eliminate the root causes
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Option B:Correct
No, the auditee is required to submit action plans that include detailed information on how every corrective action will be implemented
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Option C:Correct
Yes, the auditee is required to submit action plans that include a general statement regarding the actions that will be taken
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
The auditee is required to submit action plans that include detailed information on how every corrective action will be implemented. General statements are not sufficient; the action plans must specify the corrective actions in detail to ensure that the root causes of the nonconformities are addressed effectively.
[References: ISO/IEC 27001:2013, Clause 10.1 (General) and ISO 19011:2018, Guidelines for auditing management systems., , , ] -
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Question 10
Single answerThe auditor discovered that two out of 15 employees of the IT Department have not received adequate information security training. What does this represent?
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Option A:Correct
Audit finding
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Option B:Correct
Audit evidence
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Option C:Correct
Information source
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: A
Explanation
This scenario represents an " audit finding. " An audit finding refers to results that indicate a deviation from the expected performance or standards. Discovering that two employees have not received the required training is an audit finding indicating noncompliance with the organization ' s training requirements.
[References: ISO 19011:2018, Guidelines for auditing management systems, , , ] -