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

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Aug 13, 2026
  • Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

SectionWeightObjectives
Security Fundamentals & ISA/IEC 62443 Framework20%- Core security principles: CIA triad, defense-in-depth
- Foundational security requirements
- Zones and conduits model
- Structure and parts of ISA/IEC 62443 standards
Industrial Network Security30%- Industrial protocols security
- Threats, vulnerabilities and risk assessment
- Network segmentation and security architecture
Security Operations & Incident Response20%- Monitoring, maintenance and continuous improvement
- Incident handling and response processes
- Cybersecurity Management System (CSMS)
Industrial Automation and Control Systems (IACS) Overview15%- Differences between IT and OT security
- Cybersecurity importance in industrial environments
- IACS components, architectures and protocols
Access Control & Identity Management15%- Security policies and procedures
- User authentication and authorization
- Role-based access control

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which of the following PRIMARILY determines access privileges for user accounts?
Available Choices (select all choices that are correct)

A) Technical capability
B) Authorization security policy
C) Users' desire for ease of use
D) Common practice


2. Which of the following is NOT listed as a potential consequence of compromising IACS according to the ISA99 Committee scope?

A) Endangerment of public safety
B) Economic and operational losses
C) Increased product sales
D) Loss of proprietary information


3. Which of the following provides the overall conceptual basis in the design of an appropriate security program?
Available Choices (select all choices that are correct)

A) Zone model
B) Reference architecture
C) Asset model
D) Reference model


4. Why is OPC Classic considered firewall unfriendly?
Available Choices (select all choices that are correct)

A) OPC Classic works with control devices from different manufacturers.
B) OPC Classic is allowed to use only port 80.
C) OPC Classic uses DCOM, which dynamically assigns any port between 1024 and 65535.
D) OPC Classic is an obsolete communication standard.


5. 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


Solutions:

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

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