ISA/IEC 62443 Cybersecurity Fundamentals Specialist - ISA-IEC-62443 Exam Questions [2026]

QUESTION NO: 1
Which standard is recognized as part of the NIST CSF Informative References?

A. ISO 9001 B. PCI DSS C. COBIT 5 D. ISA/IEC 62443

Correct Answer: D

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QUESTION NO: 2
Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)

A. Block all traffic by default. B. Allow IACS devices to access the Internet. C. Allow all traffic by default. D. Allow traffic directly from the IACS network to the enterprise network.

Correct Answer: A

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QUESTION NO: 3
The Risk Analysis category contains background information that is used where?
Available Choices (select all choices that are correct)

A. Many other elements in the CSMS B. Only the Risk ID element C. Only the Assessment element D. (Elements external to the CSMS

Correct Answer: A

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QUESTION NO: 4
Which steps are included in the ISA/IEC 62443 assess phase?
Available Choices (select all choices that are correct)

A. Cybersecurity requirements specification and detailed cyber risk assessment B. Detailed cyber risk assessment and cybersecurity maintenance, monitoring, and management of change C. Allocation of IACS assets to zones and conduits, and detailed cyber risk assessment D. Cybersecurity requirements specification and allocation of IACS assets to zones and conduits

Correct Answer: D

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QUESTION NO: 5
What is the primary audience for Part 2-5 of the ISA/IEC 62443 Series - Policies & Procedures group of standards?

A. System integrators B. Asset owners C. Service providers D. Product suppliers

Correct Answer: C

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QUESTION NO: 6
Which layer specifies the rules for Modbus Application Protocol
Available Choices (select all choices that are correct)

A. Session layer B. Application layer C. Presentation layer D. Data link layer

Correct Answer: B

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QUESTION NO: 7
Which ISA/IEC 62443 part covers technical security requirements used by product suppliers, integration service providers, and asset owners?

A. ISA/IEC 62443-2-4 B. ISA/IEC 62443-2-1 C. ISA/IEC 62443-4-2 D. ISA/IEC 62443-3-3

Correct Answer: D

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QUESTION NO: 8
Which steps are part of implementing countermeasures?
Available Choices (select all choices that are correct)

A. Select common countermeasures and update the business continuity plan. B. Establish the risk tolerance and select common countermeasures. C. Establish the risk tolerance and update the business continuity plan. D. Select common countermeasures and collaborate with stakeholders.

Correct Answer: B

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QUESTION NO: 9
According to ISA/IEC TR 62443-1-5, which documents can be referenced when creating a security profile?

A. ISA/IEC 62443-2-1, 2-4, 3-3, 4-1, and 4-2 B. Only ISA/IEC 62443-1-1 and 1-2 C. Only ISA/IEC 62443-3-3 and 4-1 D. Any cybersecurity standard outside the ISA/IEC 62443 series

Correct Answer: A

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