ISO 27001 Information Security Management Systems Exam
2026/2027 | Complete Practice Questions, Correct Answers &
Detailed Rationales
Section 1: ISO/IEC 27001 Fundamentals — Questions 1–25
1. What is the primary purpose of ISO/IEC 27001?
A. To prescribe a specific firewall technology
B. To establish requirements for an Information Security Management
System
C. To replace all cybersecurity laws
D. To provide a software-development methodology
Correct Answer: B. To establish requirements for an Information
Security Management System
Rationale: ISO/IEC 27001 specifies requirements for establishing,
implementing, maintaining, and continually improving an ISMS.
2. What does ISMS stand for?
A. Information Security Management System
B. Information Systems Monitoring Service
C. International Security Management Standard
D. Information Software Management Structure
Correct Answer: A. Information Security Management System
Rationale: ISMS is the management framework used to manage
information-security risks systematically.
3. Which three properties form the traditional information-security
triad?
,A. Privacy, authentication, authorization
B. Confidentiality, integrity, availability
C. Detection, prevention, recovery
D. Identification, classification, encryption
Correct Answer: B. Confidentiality, integrity, availability
Rationale: The CIA triad represents the fundamental objectives of
information security.
4. Confidentiality primarily means that information is:
A. Available at all times
B. Accurate and complete
C. Accessible only to authorized parties
D. Stored indefinitely
Correct Answer: C. Accessible only to authorized parties
Rationale: Confidentiality protects information from unauthorized
disclosure.
5. Integrity primarily concerns:
A. Preventing unauthorized alteration or destruction of information
B. Increasing network bandwidth
C. Making systems publicly accessible
D. Reducing software licensing costs
Correct Answer: A. Preventing unauthorized alteration or destruction
of information
Rationale: Integrity ensures information remains accurate, complete,
and protected from unauthorized modification.
6. Availability means information should:
,A. Be encrypted permanently
B. Be accessible when required by authorized users
C. Never be backed up
D. Be accessible to everyone
Correct Answer: B. Be accessible when required by authorized users
Rationale: Availability ensures authorized access when needed.
7. ISO/IEC 27001 is applicable to:
A. Only technology companies
B. Only government agencies
C. Organizations of different sizes and sectors
D. Only financial institutions
Correct Answer: C. Organizations of different sizes and sectors
Rationale: ISO states that organizations across sectors and of different
sizes can implement ISO/IEC 27001. (ISO)
8. ISO/IEC 27001 uses which general management-system philosophy?
A. Plan-Do-Check-Act
B. Build-Buy-Sell
C. Detect-Delete-Replace
D. Design-Code-Test
Correct Answer: A. Plan-Do-Check-Act
Rationale: The PDCA approach supports systematic management and
continual improvement.
9. What is the primary role of risk management in an ISMS?
A. Eliminate every possible risk
B. Identify, assess, and treat information-security risks
, C. Remove all employees with security responsibilities
D. Replace management controls with technology
Correct Answer: B. Identify, assess, and treat information-security
risks
Rationale: ISO/IEC 27001 uses a risk-based approach to determine
appropriate security measures.
10. Which statement best describes an information-security risk?
A. A guaranteed security incident
B. The effect of uncertainty on information-security objectives
C. A security policy
D. A completed corrective action
Correct Answer: B. The effect of uncertainty on information-security
objectives
Rationale: Risk is associated with uncertainty and its potential effect on
objectives.
11. What is an information asset?
A. Only physical computer equipment
B. Anything valuable to the organization that relates to information or
its processing
C. Only confidential documents
D. Only cloud servers
Correct Answer: B. Anything valuable to the organization that relates
to information or its processing
Rationale: Assets can include information, systems, people, facilities,
and supporting resources.
2026/2027 | Complete Practice Questions, Correct Answers &
Detailed Rationales
Section 1: ISO/IEC 27001 Fundamentals — Questions 1–25
1. What is the primary purpose of ISO/IEC 27001?
A. To prescribe a specific firewall technology
B. To establish requirements for an Information Security Management
System
C. To replace all cybersecurity laws
D. To provide a software-development methodology
Correct Answer: B. To establish requirements for an Information
Security Management System
Rationale: ISO/IEC 27001 specifies requirements for establishing,
implementing, maintaining, and continually improving an ISMS.
2. What does ISMS stand for?
A. Information Security Management System
B. Information Systems Monitoring Service
C. International Security Management Standard
D. Information Software Management Structure
Correct Answer: A. Information Security Management System
Rationale: ISMS is the management framework used to manage
information-security risks systematically.
3. Which three properties form the traditional information-security
triad?
,A. Privacy, authentication, authorization
B. Confidentiality, integrity, availability
C. Detection, prevention, recovery
D. Identification, classification, encryption
Correct Answer: B. Confidentiality, integrity, availability
Rationale: The CIA triad represents the fundamental objectives of
information security.
4. Confidentiality primarily means that information is:
A. Available at all times
B. Accurate and complete
C. Accessible only to authorized parties
D. Stored indefinitely
Correct Answer: C. Accessible only to authorized parties
Rationale: Confidentiality protects information from unauthorized
disclosure.
5. Integrity primarily concerns:
A. Preventing unauthorized alteration or destruction of information
B. Increasing network bandwidth
C. Making systems publicly accessible
D. Reducing software licensing costs
Correct Answer: A. Preventing unauthorized alteration or destruction
of information
Rationale: Integrity ensures information remains accurate, complete,
and protected from unauthorized modification.
6. Availability means information should:
,A. Be encrypted permanently
B. Be accessible when required by authorized users
C. Never be backed up
D. Be accessible to everyone
Correct Answer: B. Be accessible when required by authorized users
Rationale: Availability ensures authorized access when needed.
7. ISO/IEC 27001 is applicable to:
A. Only technology companies
B. Only government agencies
C. Organizations of different sizes and sectors
D. Only financial institutions
Correct Answer: C. Organizations of different sizes and sectors
Rationale: ISO states that organizations across sectors and of different
sizes can implement ISO/IEC 27001. (ISO)
8. ISO/IEC 27001 uses which general management-system philosophy?
A. Plan-Do-Check-Act
B. Build-Buy-Sell
C. Detect-Delete-Replace
D. Design-Code-Test
Correct Answer: A. Plan-Do-Check-Act
Rationale: The PDCA approach supports systematic management and
continual improvement.
9. What is the primary role of risk management in an ISMS?
A. Eliminate every possible risk
B. Identify, assess, and treat information-security risks
, C. Remove all employees with security responsibilities
D. Replace management controls with technology
Correct Answer: B. Identify, assess, and treat information-security
risks
Rationale: ISO/IEC 27001 uses a risk-based approach to determine
appropriate security measures.
10. Which statement best describes an information-security risk?
A. A guaranteed security incident
B. The effect of uncertainty on information-security objectives
C. A security policy
D. A completed corrective action
Correct Answer: B. The effect of uncertainty on information-security
objectives
Rationale: Risk is associated with uncertainty and its potential effect on
objectives.
11. What is an information asset?
A. Only physical computer equipment
B. Anything valuable to the organization that relates to information or
its processing
C. Only confidential documents
D. Only cloud servers
Correct Answer: B. Anything valuable to the organization that relates
to information or its processing
Rationale: Assets can include information, systems, people, facilities,
and supporting resources.
