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

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Aug 17, 2026   Q&As: 221 Questions and Answers
  • 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%- Zones and conduits model
- Foundational security requirements
- Core security principles: CIA triad, defense-in-depth
- Structure and parts of ISA/IEC 62443 standards
Topic 2: Access Control & Identity Management15%- Role-based access control
- User authentication and authorization
- Security policies and procedures
Topic 3: Security Operations & Incident Response20%- Incident handling and response processes
- Cybersecurity Management System (CSMS)
- Monitoring, maintenance and continuous improvement
Topic 4: Industrial Automation and Control Systems (IACS) Overview15%- Differences between IT and OT security
- IACS components, architectures and protocols
- Cybersecurity importance in industrial environments
Topic 5: Industrial Network Security30%- Network segmentation and security architecture
- Industrial protocols security
- Threats, vulnerabilities and risk assessment
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which of the following is a cause for the increase in attacks on IACS?
Available Choices (select all choices that are correct)

A) Fewer personnel with system knowledge having access to IACS
B) Use of proprietary communications protocols
C) Knowledge of exploits and tools readily available on the Internet
D) The move away from commercial off the shelf (COTS) systems, protocols, and networks


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

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


3. During the operation of an IACS, who is responsible for executing the Security Protection Scheme (SPS) process measures and responding to emerging risks?

A) The system integrator
B) The asset owner
C) The product vendor
D) The external auditor


4. A company needs to create a standardized interface for exchanging real-time plant data between heterogeneous control devices while maintaining a structured organization of data elements such as folders, classes, and methods. Which feature of OPC supports this requirement?

A) OPC Unified Architecture's browsable namespace
B) OPC Classic aware firewalls analyzing DCOM
C) OPC Classic's use of Microsoft OLE and COM technologies
D) OPC Tunnel Applications for firewalls


5. What is the name of the protocol that implements serial Modbus over Ethernet?
Available Choices (select all choices that are correct)

A) MODBUS/TCP
B) MODBUS/Ethernet
C) MODBUS/CIP
D) MODBUS/Plus


Solutions:

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

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