Expert Answers to ISA Exam ISA-IEC-62443 Questions

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Cybersecurity ISA/IEC 62443 Cybersecurity Fundamentals Specialist

ISA/IEC 62443 Cybersecurity Fundamentals Specialist

Last Update Aug 6, 2026
Total Questions : 227

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Questions 2

Which of the following activities is NOT listed under the “Patch Testing” phase in the asset owner requirements?

Options:

Notification

File authenticity

Removal procedure

Qualification and verification

Discussion 0

Questions 3

Which is a PRIMARY reason why network security is important in IACS environments?

Available Choices (select all choices that are correct)

Options:

PLCs are inherently unreliable.

PLCs are programmed using ladder logic.

PLCs use serial or Ethernet communications methods.

PLCs under cyber attack can have costly and dangerous impacts.

Discussion 0

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Questions 4

What is TRUE regarding safety systems?

Options:

No dedicated malware has been found targeting safety systems specifically.

Even the most modern and sophisticated safety systems can be defeated by an attacker.

Safety systems are an independent protection layer and as such have no cybersecurity vulnerabilities.

By integrating control and safety systems via Modbus TCP, cybersecurity risks are at a tolerable level.

Discussion 0

Questions 5

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