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 01, 2026
  • Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Security Fundamentals & ISA/IEC 62443 Framework20%- Structure and parts of ISA/IEC 62443 standards
- Foundational security requirements
- Core security principles: CIA triad, defense-in-depth
- Zones and conduits model
Topic 2: Industrial Network Security30%- Network segmentation and security architecture
- Industrial protocols security
- Threats, vulnerabilities and risk assessment
Topic 3: Security Operations & Incident Response20%- Monitoring, maintenance and continuous improvement
- Cybersecurity Management System (CSMS)
- Incident handling and response processes
Topic 4: Access Control & Identity Management15%- User authentication and authorization
- Security policies and procedures
- Role-based access control
Topic 5: Industrial Automation and Control Systems (IACS) Overview15%- Differences between IT and OT security
- Cybersecurity importance in industrial environments
- IACS components, architectures and protocols

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

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

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


2. What does the System under Consideration (SuC) include in the context of ISA/IEC 62443 risk assessment?

A) Only business zone assets
B) External vendor devices and business zone assets only
C) A defined collection of IACS and related assets
D) Only physical assets within an existing plant


3. Which organization manages the ISASecure conformance certification program?
Available Choices (select all choices that are correct)

A) National Institute of Standards and Technology
B) Security Compliance Institute
C) American Society for Industrial Security
D) Automation Federation


4. Which statement is TRUE reqardinq application of patches in an IACS environment?
Available Choices (select all choices that are correct)

A) Patches should be applied as soon as they are available.
B) Patches never should be applied in an IACS environment.
C) Patches should be applied based on the organization's risk assessment.
D) Patches should be applied within one month of availability.


5. Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)

A) Privilege escalation
B) Unauthorized access
C) Race conditions
D) Buffer overflow


Solutions:

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

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