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 #53

What does IACS stand for?

A. Industrial Automation and Control Systems

B. Integrated Automation and Control Systems

C. International Automated and Control Systems

D. Industrial Associations and Control Systems

Discussion 0

Correct Answer: A Vote an answer

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Question #54

Which of the following BEST describes a control system?

A. Actions to prevent loss of revenue

B. Unauthorized modifications to data

C. Measures taken to protect against unauthorized access

D. Hardware and software components of an IACS

Discussion 0

Correct Answer: D Vote an answer

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Question #55

Which layer is responsible for error checking and MAC addressing?

A. Application

B. Transport

C. Data link

D. Network

Discussion 0

Correct Answer: C Vote an answer

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Question #56

Who must be included in a training and security awareness program?
Available Choices (select all choices that are correct)

A. Employees

B. All personnel

C. Vendors and suppliers

D. Temporary staff

Discussion 0

Correct Answer: B Vote an answer

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Question #57

What is the purpose of ICS-CERT Alerts?

A. To alert of targeted global energy sector threats

B. To inform about hardware upgrades

C. To notify the owners of critical infrastructure

D. To advertise cybersecurity services

Discussion 0

Correct Answer: C Vote an answer

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Question #58

Which service does an Intrusion Detection System (IDS) provide?

A. It is effective against all vulnerabilities in networks and computer systems.

B. It detects attempts to break into or misuse a computer system.

C. It blocks malicious activity in networks and computer systems.

D. It is the lock on the door for networks and computer systems.

Discussion 0

Correct Answer: B Vote an answer

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Question #59

What is a key feature of the NIS2 Directive?

A. It eliminates the need for public-private partnerships.

B. It establishes a cyber crisis management structure.

C. It focuses solely on physical security regulations.

D. It mandates compliance with all standards.

Discussion 0

Correct Answer: B Vote an answer

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Question #60

What is the PRIMARY goal of the IACS Security Program (SP) requirements according to ISA/IEC 62443-2-
1?

A. To focus solely on physical security measures

B. To eliminate all cybersecurity risks completely

C. To mitigate risk

D. To implement technologies only

Discussion 0

Correct Answer: C Vote an answer

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Question #61

Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)

A. Level 4 systems must use the DMZ to communicate with Level 3 and below.

B. Level 0 can only interact with Level 1 through the firewall.

C. Email is prevented, thereby mitigating the risk of phishing attempts.

D. Internet access through the firewall is allowed.

Discussion 0

Correct Answer: D Vote an answer

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Question #62

When selecting a risk assessment methodology for a complex industrial automation system, which approach aligns BEST with ISA/IEC 62443 guidance?

A. Only perform qualitative assessments without quantitative measures.

B. Use different methodologies for initial and detailed assessments to cover more perspectives.

C. Avoid using standards or frameworks to maintain flexibility.

D. Follow any documented methodology as long as it uses a consistent risk ranking scale.

Discussion 0

Correct Answer: D Vote an answer

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Question #63

Which of the following is NOT a general class of firewalls?

A. Network inspection

B. Packet filter

C. Application proxy

D. Stateful inspection

Discussion 0

Correct Answer: A Vote an answer

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Question #64

Which U.S. Department is responsible for the Chemical Facility Anti-Terrorism Standards (CFATS)?

A. Department of Homeland Security

B. Department of Energy

C. Nuclear Regulatory Commission

D. Transportation Security Administration

Discussion 0

Correct Answer: A Vote an answer

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Question #65

After receiving an approved patch from the IACS vendor, what is BEST practice for the asset owner to follow?

A. If a low priority, there is no need to apply the patch.

B. If a high priority, apply the patch at the first unscheduled outage.

C. If a medium priority, schedule the installation within three months after receipt.

D. If no problems are experienced with the current IACS, it is not necessary to apply the patch.

Discussion 0

Correct Answer: B Vote an answer

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