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

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Jun 23, 2026
  • Q & A: 221 Questions and Answers

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which model describes relationships between assets within an industrial automation and control system?

A) Zone model
B) Security level model
C) Reference architecture
D) Asset model


2. In terms of availability requirements, how do IACS and IT differ?

A) Rebooting is never acceptable in IT but tolerated in IACS.
B) IACS tolerates occasional failures while IT does not.
C) Continuous operation is expected in IT while scheduled operation is sufficient for IACS.
D) Both IACS and IT have the same availability requirements.


3. Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications?
Available Choices (select all choices that are correct)

A) PROFIBUS DP
B) PROF1SAFE
C) PROFINET
D) PROFIBUS PA


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

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


5. Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?

A) Option B
B) Option C
C) Option A
D) Option D


Solutions:

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

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