Free ISA ISA-IEC-62443 Practice Test & Real Exam Questions

Exam Code/Number: ISA-IEC-62443
Exam Name/Title: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
Certification Provider: ISA
Corresponding Certification: ISA Cybersecurity

Exam Questions: 221
Updated On: Jul 07, 2026

Question #14

Why is segmentation from non-IACS zones important in Network & Communication Security (SP Element
3)?

A. To classify data according to sensitivity levels

B. To manage user identity persistence effectively

C. To prevent attacks originating outside the IACS

D. To ensure backup verification processes run smoothly

Discussion 0

Correct Answer: C Vote an answer

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Question #15

What is defined as the hardware and software components of an IACS?
Available Choices (select all choices that are correct)

A. COTS software and hardware

B. Cybersecuritv

C. Electronic security

D. Control system

Discussion 0

Correct Answer: D Vote an answer

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Question #16

Which communications system covers a large geographic area?
Available Choices (select all choices that are correct)

A. Local Area Network (LAN)

B. Campus Area Network (CAN)

C. Wide Area Network (WAN)

D. Storage Area Network

Discussion 0

Correct Answer: C Vote an answer

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Question #17

If an industrial control system experiences frequent unexpected shutdowns causing downtime, which SP Element activities should be reviewed to improve system availability?

A. SP Element 2 - Change control

B. SP Element 1 - Supply chain security

C. SP Element 7 - Logging and event reporting

D. SP Element 8 - Backup restoration

Discussion 0

Correct Answer: D Vote an answer

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Question #18

Which of the following can be employed as a barrier device in a segmented network?
Available Choices (select all choices that are correct)

A. VPN

B. Domain controller

C. Unmanaged switch

D. Router

Discussion 0

Correct Answer: D Vote an answer

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Question #19

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

A. PROF1SAFE

B. PROFINET

C. PROFIBUS DP

D. PROFIBUS PA

Discussion 0

Correct Answer: B Vote an answer

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Question #20

An energy utility company needs to implement cybersecurity controls specifically tailored for industrial control systems. Which standard from the list would be MOST appropriate for their use?

A. NIST SP 800-53

B. IEC PAS

C. ISO/IEC 27001

D. ISO/IEC 27019

Discussion 0

Correct Answer: D Vote an answer

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Question #21

Which is an important difference between IT systems and IACS?
Available Choices (select all choices that are correct)

A. The IACS security priority is integrity.

B. IACS cybersecurity must address safety issues.

C. The IT security priority is availability.

D. Routers are not used in IACS networks.

Discussion 0

Correct Answer: A,B Vote an answer

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Question #22

Which of the following is an example of separation of duties as a part of system development and maintenance?
Available Choices (select all choices that are correct)

A. Changes are approved by one party and implemented by another.

B. Developers write and then test their own code.

C. Configuration settings are made by one party and self-reviewed using a checklist.

D. Design and implementation are performed by the same team.

Discussion 0

Correct Answer: A Vote an answer

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Question #23

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 Assessment element

C. (Elements external to the CSMS

D. Only the Risk ID element

Discussion 0

Correct Answer: A Vote an answer

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Question #24

Which ISA/IEC 62443 part covers technical security requirements used by product suppliers, integration service providers, and asset owners?

A. ISA/IEC 62443-2-1

B. ISA/IEC 62443-3-3

C. ISA/IEC 62443-2-4

D. ISA/IEC 62443-4-2

Discussion 0

Correct Answer: B Vote an answer

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Question #25

Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)

A. Modbus is a proprietary protocol that is widely supported by vendors.

B. Modbus has no known security vulnerabilities, so firewall rules are simple to implement.

C. Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.

D. Modbus uses a single master to communicate with multiple slaves usinq simple commands.

Discussion 0

Correct Answer: C Vote an answer

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Question #26

Which organization manages the ISASecure conformance certification program?
Available Choices (select all choices that are correct)

A. Security Compliance Institute

B. National Institute of Standards and Technology

C. Automation Federation

D. American Society for Industrial Security

Discussion 0

Correct Answer: A Vote an answer

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