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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?

A) Level 2: Quality Control
B) Level 3: Operations Management
C) Level 4: Process
D) Level 1: Supervisory Control

2. Which of the following BEST describes a control system?

A) Hardware and software components of an IACS
B) Actions to prevent loss of revenue
C) Measures taken to protect against unauthorized access
D) Unauthorized modifications to data

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

A) If no problems are experienced with the current IACS, it is not necessary to apply the patch.
B) If a low priority, there is no need to apply the patch.
C) If a high priority, apply the patch at the first unscheduled outage.
D) If a medium priority, schedule the installation within three months after receipt.

4. 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) Developers write and then test their own code.
B) Design and implementation are performed by the same team.
C) Changes are approved by one party and implemented by another.
D) Configuration settings are made by one party and self-reviewed using a checklist.

5. Which is the BEST practice when establishing security zones?
Available Choices (select all choices that are correct)

A) Security zones should contain assets that share common security requirements.
B) Security zones should align with physical network segments.
C) Assets within the same logical communication network should be in the same security zone.
D) All components in a large or complex system should be in the same security zone.

Solutions: