ISA ISA-IEC-62443 - ISA/IEC 62443 Cybersecurity Fundamentals Specialist
- Exam Code: ISA-IEC-62443
- Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
- Updated: Oct 06, 2026
- Q & A: 221 Questions and Answers
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ISA ISA-IEC-62443 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Industrial Automation and Control Systems (IACS) Overview | 15% | - Differences between IT and OT security - IACS components, architectures and protocols - Cybersecurity importance in industrial environments |
| Topic 2: Industrial Network Security | 30% | - Industrial protocols security - Threats, vulnerabilities and risk assessment - Network segmentation and security architecture |
| Topic 3: Security Operations & Incident Response | 20% | - Incident handling and response processes - Cybersecurity Management System (CSMS) - Monitoring, maintenance and continuous improvement |
| Topic 4: Access Control & Identity Management | 15% | - Security policies and procedures - Role-based access control - User authentication and authorization |
| Topic 5: Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Core security principles: CIA triad, defense-in-depth - Zones and conduits model - Structure and parts of ISA/IEC 62443 standards - Foundational security requirements |
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:
Question #1
Which of the following is NOT a strategy for deploying a WAN?
- A. Enterprise WANs
- B. Internet
- C. Carrier-managed WANs
- D. Local area networks
Correct Answer: D 🗳️
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Question #2
Why is OPC Classic considered firewall unfriendly?
Available Choices (select all choices that are correct)
- A. OPC Classic is an obsolete communication standard.
- B. OPC Classic works with control devices from different manufacturers.
- C. OPC Classic uses DCOM, which dynamically assigns any port between 1024 and 65535.
- D. OPC Classic is allowed to use only port 80.
Correct Answer: C 🗳️
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Question #3
An industrial facility wants to ensure that only authorized communication reaches its PLCs while minimizing disruption to time-sensitive control processes. Which type of firewall would BEST suit this need?
- A. Unidirectional gateway (data diode)
- B. General-purpose software firewall
- C. IACS-specific firewall with deep packet inspection
- D. Basic packet filter firewall without protocol awareness
Correct Answer: C 🗳️
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Question #4
Which communications system covers a large geographic area?
Available Choices (select all choices that are correct)
- A. Local Area Network (LAN)
- B. Campus Area Network (CAN)
- C. Storage Area Network
- D. Wide Area Network (WAN)
Correct Answer: D 🗳️
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Question #5
The ISA/IEC 62443 Profiles Group will include parts starting with which number?
- A. 3-x
- B. 6-x
- C. 5-x
- D. 4-x
Correct Answer: C 🗳️
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