| Exam Code | ISO-9001-Lead-Auditor |
| Exam Name | QMS ISO 9001:2015 Lead Auditor |
| Vendor | PECB |
| Total Questions | 131 |
| Last Updated | 26-Oct, 2026 |
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Free ISO-9001-Lead-Auditor Practice Questions
Explore 5 free practice questions for the PECB ISO-9001-Lead-Auditor exam and review the answers and explanations to support your preparation.
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Question 1
Multiple answersWhich two of the following are the key expected results of a quality managementsystem that conforms to the requirements of ISO 9001:2015?
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Option A:Correct
Decreased number of nonconforming products in allstages of the manufacturing cycle
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Option B:Correct
Decreased number of management system nonconformities
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Option C:Correct
Consistently provide products that meet customers' requirements
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Option D:Correct
Increased profits
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Option E:Correct
Decreased number of warranty claims
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Option F:Correct
Enhanced customersatisfaction
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: C, F
Explanation
According to the ISO 9001:2015 document, the key expected results of a quality management system that conforms to the requirements of ISO 9001:2015 are: • the ability to consistently provide products and services that meet customer and applicable statutory and regulatory requirements; • the enhancement of customer satisfaction. These results are derived from the quality management principles of customer focus and process approach, which are the basis of the ISO 9000 family of standards1. Customer focus means understanding and meeting customer needs and expectations, as well as exceeding them when possible1. Process approach means managing activities as interrelated processes that function as a coherent system, which leads to consistent and predictable results1. Therefore, the correct answer is C and F. Reference: 2: ISO 9001:2015 - Quality management systems — Requirements 1: ISO - Quality management principles
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Question 2
Single answerSelect the term that best describes the purpose of retaining documented information in a quality management system to ISO 9001.
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Option A:Correct
To facilitate auditing for proof of conformity to the standard.
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Option B:Correct
To provide confidence in the effectiveness of the quality management system.
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Option C:Correct
To safeguard the integrity of the quality management system.
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Option D:Correct
To support the operation of the processes of the quality management system.
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
According to ISO 9001:2015, clause 4.4, an organization shall maintain documented information to the extent necessary to support the operation of processes and retain documented information to the extent necessary to have confidence that the processes are under control. The purpose of retaining documented information is to provide evidence of conformity to the standard, communicate information in the organization, maintain organizational knowledge, trace back changes or measurement used, and keep reference for improvement1. Reference: Guidance on the requirements for Documented Information of ISO 9001:2015 Maintain Documented Information in ISO 9001:2015 – NIIX Quality Management System Software Documented Information Required by ISO 9001:2015 - 9000 Store Quality Systems- Recordsrequired by ISO 9001:2015 A Quality Management System Based on ISO 9001 | PECB
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Question 3
Single answerWhich statement regarding the drafting of the audit conclusions is correct?
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Option A:Correct
The audit conclusions must be drafted based on observation
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Option B:Correct
The audit conclusions must be based on evidence that is examined and evaluated in terms of quantity and quality
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Option C:Correct
The audit conclusions must not include the revisions that resulted from the closing meeting
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
Comprehensive and Detailed In-Depth
According to ISO 19011:2018, Clause 6.4.9 (Audit Conclusions):
Audit conclusions must be based on verified evidence.
The evidence must be evaluated both quantitatively and qualitatively to ensure accuracy.
Observations alone (A) are insufficient; conclusions must be supported by objective evidence.
Thus, B is the correct answer.
ISO 19011:2018, Clause 6.4.9 (Audit Conclusions)
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Question 4
Single answerScenario 5: Mechanical-Electro (ME) Audit Stages
Mechanical-Electro, better known as ME, is an American company that provides mechanical and electrical services in Chin
a. Their services range from air-conditioning systems, ventilation systems, plumbing, to installation of electrical equipment in automobile plants, electronic manufacturing facilities, and food processing plants.
Due to the fierce competition from local Chinese companies and failing to meet customer requirements, ME's revenue dropped significantly. In addition, customers' trust and confidence in the company decreased, and the reputation of the company was damaged.
In light of these developments, the top management of ME decided to implement a quality management system (QMS) based on ISO 9001. After having an effective QMS in place for over a year, they applied for a certification audit.
A team of four auditors was appointed for the audit, including Li Na as the audit team leader. Initially, the audit team conducted a general review of ME's documents, including the quality policy, operational procedures, inventory lists, QMS scope, process documentation, training records, and previous audit reports.
Li Na stated that this would allow the team to maintain a systematic and structured approach to gathering documents for all audit stages. While reviewing the documented information, the team observed some minor issues but did not identify any major nonconformities. Therefore, Li Na claimed that it was not necessary to prepare a report or conduct a meeting with ME's representatives at that stage of the audit. She stated that all areas of concern would be discussed in the next phase of the audit.
Following the on-site activities and the opening meeting with ME's top management, the audit team structured an audit test plan to verify whether ME's QMS conformed to Clause 8.2.1 (Customer Communication) of ISO 9001.
To do so, they gathered information through group interviews and sampling. Li Na conducted interviews with departmental managers in the first group and then with top management. In addition, she chose a sampling method that sufficiently represented customer complaints from both areas of ME's operations.
The team members were responsible for the sampling procedure. They selected a sample size of 4 out of 45 customer complaints received weekly for electrical services and 2 out of 10 complaints for mechanical services.
Afterward, the audit team evaluated the evidence against the audit criteria and generated the audit findings.
Which stages of the audit were performed?
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Option A:Correct
Audit follow-up and stage 1 audit.
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Option B:Correct
Stage 1 and stage 2 audit.
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Option C:Correct
Stage 2 audit and surveillance audit.
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
Comprehensive and Detailed In-Depth
Understanding Audit Stages Based on ISO/IEC 17021-1:2015
ISO certification audits consist of two main stages:
Stage 1 Audit (Readiness Review)
The organization's documented information is reviewed to assess readiness for Stage 2.
This ensures that the QMS is developed, implemented, and prepared for full assessment.
Stage 2 Audit (On-Site Evaluation)
Auditors assess process implementation and effectiveness through interviews, observations, and evidence collection.
The audit team verifies if the organization meets ISO 9001 requirements in practice.
Why is the Correct Answer B?
The audit team reviewed ME's documents, which is a Stage 1 activity.
The audit team performed interviews, sampling, and on-site verification, which is a Stage 2 activity.
There was no mention of an audit follow-up or a surveillance audit, which occur post-certification.
Why are the Other Options Incorrect?
A (Audit follow-up and Stage 1 Audit) Follow-up audits occur after certification, which was not the case here.
C (Stage 2 Audit and Surveillance Audit) Surveillance audits are post-certification audits and were not conducted yet.
ISO/IEC 17021-1:2015, Clause 9.3.1 -- Initial Certification Audit (Stage 1 & 2)
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Question 5
Single answerAccording to ISO 9000, what is quality?
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Option A:Correct
The ability of an object to realize an output that will fulfill the requirements for that output
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Option B:Correct
The degree to which a set of inherent characteristics of an object fulfills requirements
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Option C:Correct
A set of conditions under which work is performed
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Option D:Correct
The efficiency with which resources are utilized in achieving objectives
Show Answer & Explanation Hide Answer & Explanation
Correct Answer: B
Explanation
Comprehensive and Detailed In-Depth
ISO 9000:2015 defines quality as 'the degree to which a set of inherent characteristics of an object fulfills requirements.'
Clause 3.6.2 (Quality) confirms this definition.
Quality is determined by how well an object (product, service, or process) meets defined requirements (customer, regulatory, or internal).
The other options do not align with the official ISO definition:
Option A refers to performance capability but does not define quality.
Option C describes work conditions, not quality.
Option D focuses on efficiency rather than fulfilling requirements.
ISO 9000:2015, Clause 3.6.2 -- Quality
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