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

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Aug 17, 2026
  • Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

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

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What is the formula for calculating risk?

A) Risk = Threat + Vulnerability + Consequence
B) Risk = Likelihood + Consequence
C) Risk = Threat * Vulnerability * Consequence
D) Risk = Threat - Vulnerability * Consequence


2. A company is developing an automation solution and wants to align its cybersecurity efforts with ISA/IEC
62443 standards. Which lifecycle phases should be integrated into their project plan to cover both security and automation solution security comprehensively?

A) Verification and Validation phase only
B) Design and Implement phases
C) All phases
D) Operate and Maintain phases exclusively


3. What is OPC?
Available Choices (select all choices that are correct)

A) An open standard serial communications protocol widely used in industrial manufacturing environments
B) An open standard protocol for the communication of real-time data between devices from different manufacturers
C) A vendor-specific proprietary protocol for the communication of real-time plant data between control devices
D) An open standard protocol for real-time field bus communication between automation technology devices


4. Which is a common pitfall when initiating a CSMS program?
Available Choices (select all choices that are correct)

A) Organizational lack of communication
B) Insufficient documentation due to lack of good follow-up
C) Immediate jump into detailed risk assessment
D) Failure to relate to the mission of the organization


5. Which of the following is NOT a general class of firewalls?

A) Application proxy
B) Network inspection
C) Packet filter
D) Stateful inspection


Solutions:

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

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