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ISA ISA-IEC-62443 - ISA/IEC 62443 Cybersecurity Fundamentals Specialist
Updated: Aug 22, 2026
Q & A: 221 Questions and Answers
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Updated: Aug 22, 2026
Q & A: 221 Questions and Answers
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Industrial Automation and Control Systems (IACS) Overview | 15% | - IACS components, architectures and protocols - Cybersecurity importance in industrial environments - Differences between IT and OT security |
| Topic 2: Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Structure and parts of ISA/IEC 62443 standards - Zones and conduits model - Foundational security requirements - Core security principles: CIA triad, defense-in-depth |
| Topic 3: Industrial Network Security | 30% | - Threats, vulnerabilities and risk assessment - Network segmentation and security architecture - Industrial protocols security |
| Topic 4: Access Control & Identity Management | 15% | - Security policies and procedures - User authentication and authorization - Role-based access control |
| Topic 5: Security Operations & Incident Response | 20% | - Monitoring, maintenance and continuous improvement - Cybersecurity Management System (CSMS) - Incident handling and response processes |
1. Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications?
Available Choices (select all choices that are correct)
A) PROFIBUS PA
B) PROF1SAFE
C) PROFINET
D) PROFIBUS DP
2. A company discovers malware on a portable USB device used within their IACS environment. According to the document, which SP Element and controls would be MOST relevant to address this issue?
A) SP Element 2 - Asset inventory baseline
B) SP Element 7 - Incident handling and response
C) SP Element 1 - Processes for discovery of security anomalies
D) SP Element 4 - Component hardening and dedicated portable media
3. Which ISA/IEC 62443 part covers technical security requirements used by product suppliers, integration service providers, and asset owners?
A) ISA/IEC 62443-4-2
B) ISA/IEC 62443-2-1
C) ISA/IEC 62443-3-3
D) ISA/IEC 62443-2-4
4. How many maturity levels (ML) are established for evaluation criteria according to ISA/IEC 62443-2-4?
A) 2
B) 4
C) 5
D) 3
5. In an IACS system, a typical security conduit consists of which of the following assets?
A) Power lines, cabinet enclosures, and protective grounds
B) Controllers, sensors, transmitters, and final control elements
C) Wiring, routers, switches, and network management devices
D) Ferrous, thickwall, and threaded conduit including raceways
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: C |
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