ISA/IEC 62443 Cybersecurity Fundamentals Specialist : ISA-IEC-62443

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Jul 27, 2026
  • Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

SectionObjectives
Validating or Verifying the Security of Systems- Auditing and compliance
- Security validation and verification techniques
- Continuous improvement of security measures
Monitoring and Improving the CSMS- Incident detection and response
- Security lifecycle management
- Continuous monitoring of IACS cybersecurity
Addressing Risk with Security Policy, Organization, and Awareness- Security awareness and training
- Security policies and procedures
- Organizational security roles and responsibilities
How Cyberattacks Happen- Cyber threats and attack vectors
- Vulnerabilities in industrial systems
- Case studies of industrial cyber incidents
Creating A Security Program- Developing a long-term security program
- Security management organization
- Defining information security policy
Risk Analysis- Risk and vulnerability analysis techniques
- Risk management fundamentals
- Cybersecurity risk assessment concepts
Addressing Risk with Implementation Measures- Defense-in-depth strategy
- Access control principles
- Industrial network architecture and segmentation
- Zones and conduits model
Addressing Risk with Selected Security Counter Measures- Patch management
- Anti-virus and endpoint protection
- Firewalls and network security devices
- Virtual Private Networks (VPNs)
Understanding the Current Industrial Security Environment- Convergence of IT and OT
- Current state of industrial control systems security
- Security challenges in OT environments

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which is the PRIMARY responsibility of the network layer of the Open Systems Interconnection (OSI) model?
Available Choices (select all choices that are correct)

A) Gives transparent transfer of data between end users
B) Forwards packets, including routing through intermediate routers
C) Provides the rules for framing, converting electrical signals to data
D) Handles the physics of getting a message from one device to another


2. What is the primary purpose of the NIST Cybersecurity Framework (CSF)?

A) To enhance the resilience of critical infrastructure
B) To replace existing cybersecurity standards
C) To create new cybersecurity technologies
D) To provide a certification for organizations


3. What is the primary goal of the Assess phase in the IACS Cybersecurity Lifecycle?

A) To implement countermeasures
B) To ensure the Achieved Security Level (SL-A) meets the Target Security Level (SL-T)
C) To assign a Target Security Level (SL-T)
D) To conduct periodic audits


4. What is the purpose of ICS-CERT Alerts?

A) To alert of targeted global energy sector threats
B) To inform about hardware upgrades
C) To notify the owners of critical infrastructure
D) To advertise cybersecurity services


5. What is Modbus?

A) A type of industrial machinery
B) A programming language
C) A network security standard
D) A serial communications protocol


Solutions:

Question # 1
Answer: B
Question # 2
Answer: A
Question # 3
Answer: C
Question # 4
Answer: C
Question # 5
Answer: D

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