ISO/IEC 27001 LEAD AUDITOR – EXAM REAL QUESTIONS +
DETAILED ANSWERS - LATEST VERSION - TOP RATED
(2026/2027)
Q1: What is ISO/IEC 27001? ANSWER ISO/IEC 27001 is an international
standard that specifies requirements for establishing, implementing,
maintaining, and continually improving an Information Security Management
System (ISMS) within the context of an organization.
Q2: What is the current version of ISO/IEC 27001? ANSWER The current
version is ISO/IEC 27001:2022, which replaced the 2013 version.
Q3: What are the three key principles of information security? ANSWER
Confidentiality, Integrity, and Availability (CIA Triad).
Q4: What is an ISMS? ANSWER An Information Security Management
System is a systematic approach to managing sensitive company information so
that it remains secure, including people, processes, and IT systems.
Q5: What is the purpose of ISO/IEC 27001? ANSWER To provide a
framework for organizations to protect their information assets through risk
management, ensuring confidentiality, integrity, and availability of information.
Q6: How many clauses are in ISO/IEC 27001:2022? ANSWER There are 10
clauses (0-10), with clauses 4-10 containing mandatory requirements.
Q7: What is Annex A in ISO/IEC 27001? ANSWER Annex A contains a
reference set of 93 information security controls organized into 4 themes
(Organizational, People, Physical, and Technological).
Q8: What does PDCA stand for in ISMS context? ANSWER Plan-Do-
Check-Act, a continuous improvement cycle used in managing the ISMS.
Q9: What is the difference between ISO 27001 and ISO 27002? ANSWER
ISO 27001 is the certifiable standard with requirements for an ISMS, while ISO
27002 provides guidelines and best practices for implementing security
controls.
,Q10: What are interested parties in ISO/IEC 27001? ANSWER
Stakeholders who can affect, be affected by, or perceive themselves to be
affected by the organization's ISMS (e.g., customers, regulators, employees,
shareholders).
Q11: What is the scope of an ISMS? ANSWER The boundaries and
applicability of the ISMS, defining what is included and excluded from the
system.
Q12: What is information security? ANSWER The preservation of
confidentiality, integrity, and availability of information.
Q13: What is a risk in ISO/IEC 27001 context? ANSWER The effect of
uncertainty on information security objectives.
Q14: What is risk assessment? ANSWER The overall process of risk
identification, risk analysis, and risk evaluation.
Q15: What is risk treatment? ANSWER The process of selecting and
implementing measures to modify risk.
Q16: What are the four risk treatment options? ANSWER Risk
modification (mitigation), risk retention (acceptance), risk avoidance, and risk
sharing (transfer).
Q17: What is a control in ISO/IEC 27001? ANSWER A measure that
maintains and/or modifies risk.
Q18: What is the Statement of Applicability (SoA)? ANSWER A
documented statement describing the controls that are relevant and applicable to
the organization's ISMS and the justification for their inclusion or exclusion.
Q19: What is top management's role in ISMS? ANSWER Demonstrating
leadership and commitment, establishing policy, ensuring integration, providing
resources, and ensuring effectiveness.
Q20: What is an information security policy? ANSWER A documented
statement of management's intent to support and control information security
across the organization.
Q21: What is the purpose of context of the organization (Clause 4)?
ANSWER To understand internal and external issues, interested parties, and
determine the scope of the ISMS.
Q22: What is continual improvement in ISMS? ANSWER Recurring
activity to enhance performance and effectiveness of the ISMS over time.
, Q23: What is a nonconformity? ANSWER Non-fulfillment of a requirement
of the standard or the organization's ISMS.
Q24: What is corrective action? ANSWER Action to eliminate the cause of a
nonconformity and prevent recurrence.
Q25: What is competence in ISO/IEC 27001? ANSWER The ability to apply
knowledge and skills to achieve intended results in information security.
Q26: What is awareness in ISMS context? ANSWER Ensuring people doing
work under the organization's control are aware of the information security
policy, their contribution to ISMS effectiveness, and implications of not
conforming.
Q27: What is documented information? ANSWER Information required to
be controlled and maintained by an organization and the medium on which it is
contained (replaces "documents" and "records" from ISO 27001:2013).
Q28: What is an information security incident? ANSWER A single or a
series of unwanted or unexpected information security events that have a
significant probability of compromising business operations and threatening
information security.
Q29: What is a vulnerability? ANSWER A weakness of an asset or control
that can be exploited by one or more threats.
Q30: What is a threat? ANSWER A potential cause of an unwanted incident,
which may result in harm to a system or organization.
Q31: What is an asset in information security? ANSWER Anything that has
value to the organization and requires protection.
Q32: What is the purpose of internal audit? ANSWER To provide assurance
that the ISMS conforms to requirements and is effectively implemented and
maintained.
Q33: What is management review? ANSWER Top management's evaluation
of the ISMS to ensure continuing suitability, adequacy, and effectiveness.
Q34: What are information security objectives? ANSWER Measurable
goals that the organization sets to achieve in relation to information security.
Q35: What is the relationship between ISO 27001 and GDPR? ANSWER
ISO 27001 provides a framework for information security that can help
organizations comply with GDPR's security requirements, though GDPR has
additional specific privacy requirements.
DETAILED ANSWERS - LATEST VERSION - TOP RATED
(2026/2027)
Q1: What is ISO/IEC 27001? ANSWER ISO/IEC 27001 is an international
standard that specifies requirements for establishing, implementing,
maintaining, and continually improving an Information Security Management
System (ISMS) within the context of an organization.
Q2: What is the current version of ISO/IEC 27001? ANSWER The current
version is ISO/IEC 27001:2022, which replaced the 2013 version.
Q3: What are the three key principles of information security? ANSWER
Confidentiality, Integrity, and Availability (CIA Triad).
Q4: What is an ISMS? ANSWER An Information Security Management
System is a systematic approach to managing sensitive company information so
that it remains secure, including people, processes, and IT systems.
Q5: What is the purpose of ISO/IEC 27001? ANSWER To provide a
framework for organizations to protect their information assets through risk
management, ensuring confidentiality, integrity, and availability of information.
Q6: How many clauses are in ISO/IEC 27001:2022? ANSWER There are 10
clauses (0-10), with clauses 4-10 containing mandatory requirements.
Q7: What is Annex A in ISO/IEC 27001? ANSWER Annex A contains a
reference set of 93 information security controls organized into 4 themes
(Organizational, People, Physical, and Technological).
Q8: What does PDCA stand for in ISMS context? ANSWER Plan-Do-
Check-Act, a continuous improvement cycle used in managing the ISMS.
Q9: What is the difference between ISO 27001 and ISO 27002? ANSWER
ISO 27001 is the certifiable standard with requirements for an ISMS, while ISO
27002 provides guidelines and best practices for implementing security
controls.
,Q10: What are interested parties in ISO/IEC 27001? ANSWER
Stakeholders who can affect, be affected by, or perceive themselves to be
affected by the organization's ISMS (e.g., customers, regulators, employees,
shareholders).
Q11: What is the scope of an ISMS? ANSWER The boundaries and
applicability of the ISMS, defining what is included and excluded from the
system.
Q12: What is information security? ANSWER The preservation of
confidentiality, integrity, and availability of information.
Q13: What is a risk in ISO/IEC 27001 context? ANSWER The effect of
uncertainty on information security objectives.
Q14: What is risk assessment? ANSWER The overall process of risk
identification, risk analysis, and risk evaluation.
Q15: What is risk treatment? ANSWER The process of selecting and
implementing measures to modify risk.
Q16: What are the four risk treatment options? ANSWER Risk
modification (mitigation), risk retention (acceptance), risk avoidance, and risk
sharing (transfer).
Q17: What is a control in ISO/IEC 27001? ANSWER A measure that
maintains and/or modifies risk.
Q18: What is the Statement of Applicability (SoA)? ANSWER A
documented statement describing the controls that are relevant and applicable to
the organization's ISMS and the justification for their inclusion or exclusion.
Q19: What is top management's role in ISMS? ANSWER Demonstrating
leadership and commitment, establishing policy, ensuring integration, providing
resources, and ensuring effectiveness.
Q20: What is an information security policy? ANSWER A documented
statement of management's intent to support and control information security
across the organization.
Q21: What is the purpose of context of the organization (Clause 4)?
ANSWER To understand internal and external issues, interested parties, and
determine the scope of the ISMS.
Q22: What is continual improvement in ISMS? ANSWER Recurring
activity to enhance performance and effectiveness of the ISMS over time.
, Q23: What is a nonconformity? ANSWER Non-fulfillment of a requirement
of the standard or the organization's ISMS.
Q24: What is corrective action? ANSWER Action to eliminate the cause of a
nonconformity and prevent recurrence.
Q25: What is competence in ISO/IEC 27001? ANSWER The ability to apply
knowledge and skills to achieve intended results in information security.
Q26: What is awareness in ISMS context? ANSWER Ensuring people doing
work under the organization's control are aware of the information security
policy, their contribution to ISMS effectiveness, and implications of not
conforming.
Q27: What is documented information? ANSWER Information required to
be controlled and maintained by an organization and the medium on which it is
contained (replaces "documents" and "records" from ISO 27001:2013).
Q28: What is an information security incident? ANSWER A single or a
series of unwanted or unexpected information security events that have a
significant probability of compromising business operations and threatening
information security.
Q29: What is a vulnerability? ANSWER A weakness of an asset or control
that can be exploited by one or more threats.
Q30: What is a threat? ANSWER A potential cause of an unwanted incident,
which may result in harm to a system or organization.
Q31: What is an asset in information security? ANSWER Anything that has
value to the organization and requires protection.
Q32: What is the purpose of internal audit? ANSWER To provide assurance
that the ISMS conforms to requirements and is effectively implemented and
maintained.
Q33: What is management review? ANSWER Top management's evaluation
of the ISMS to ensure continuing suitability, adequacy, and effectiveness.
Q34: What are information security objectives? ANSWER Measurable
goals that the organization sets to achieve in relation to information security.
Q35: What is the relationship between ISO 27001 and GDPR? ANSWER
ISO 27001 provides a framework for information security that can help
organizations comply with GDPR's security requirements, though GDPR has
additional specific privacy requirements.
