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

Exam Code: ISA
Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
Updated: Oct 03, 2026
Q & A: 221 Questions and Answers

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ISA ISA-IEC-62443 Exam Syllabus Topics:

Section	Objectives
Topic 1: Creating A Security Program	- Developing a long-term security program - Security management organization - Defining information security policy
Topic 2: Addressing Risk with Implementation Measures	- Access control principles - Defense-in-depth strategy - Zones and conduits model - Industrial network architecture and segmentation
Topic 3: Addressing Risk with Security Policy, Organization, and Awareness	- Security awareness and training - Security policies and procedures - Organizational security roles and responsibilities
Topic 4: Risk Analysis	- Cybersecurity risk assessment concepts - Risk and vulnerability analysis techniques - Risk management fundamentals
Topic 5: Validating or Verifying the Security of Systems	- Security validation and verification techniques - Auditing and compliance - Continuous improvement of security measures
Topic 6: Understanding the Current Industrial Security Environment	- Current state of industrial control systems security - Security challenges in OT environments - Convergence of IT and OT
Topic 7: Addressing Risk with Selected Security Counter Measures	- Virtual Private Networks (VPNs) - Anti-virus and endpoint protection - Patch management - Firewalls and network security devices
Topic 8: Monitoring and Improving the CSMS	- Security lifecycle management - Continuous monitoring of IACS cybersecurity - Incident detection and response
Topic 9: How Cyberattacks Happen	- Cyber threats and attack vectors - Case studies of industrial cyber incidents - Vulnerabilities in industrial systems

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

Question #1

At Layer 4 of the Open Systems Interconnection (OSI) model, what identifies the application that will handle a packet inside a host?
Available Choices (select all choices that are correct)

A. ATCP/UDP registry number
B. A TCP/UDP host ID
C. ATCP/UDP application ID
D. ATCP/UDP port number

Reveal Solution Discussion 0

Correct Answer: D 🗳️