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

ISA-IEC-62443

Exam Code: ISA-IEC-62443

Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist

Updated: Aug 09, 2026

Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

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

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What are the two sublayers of Layer 2?
Available Choices (select all choices that are correct)

A) HIDS and NIDS
B) LLC and MAC
C) VLAN and VPN
D) OPC and DCOM


2. What do packet filter firewalls examine?
Available Choices (select all choices that are correct)

A) The packet structure and sequence
B) Every incoming packet up to the application layer
C) Only the source, destination, and ports in the header of each packet
D) The relationships between packets in a session


3. Which of the following tools has the potential for serious disruption of a control network and should not be used on a live system?
Available Choices (select all choices that are correct)

A) Remote desktop
B) Web browser
C) Vulnerability scanner
D) FTP


4. How can Modbus be secured?

A) By encrypting all data packets
B) By using a VPN
C) By limiting user access
D) By firewall


5. Which of the following BEST describes 'Vulnerability'?

A) The potential for violation of security
B) An exploitable flaw in management
C) The result that occurs from a particular incident
D) An event that could breach security


Solutions:

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

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