Isaiec 62443 Cybersecurity Fundamentals Specialist · Free Practice Question Medium
Question 19
In the context of the Purdue Model, why is Level 0 (Process) generally not directly exposed to the enterprise network?
- A It is unnecessary for operations and enterprise systems to exchange data
- B It involves critical real-time processes that must remain isolated from external threats
- C It cannot communicate using standard IP-based protocols
- D It lacks sufficient hardware to implement network-level security measures
Reveal correct answer
Correct answer: B
Explanation
In the Purdue Model, Level 0 (Process) consists of physical industrial processes, sensors, and actuators that require real-time control. Exposing this level to the enterprise network would introduce security risks, such as cyber threats that could disrupt operations. To maintain system integrity and reliability, Level 0 remains isolated, often through air-gapped or highly controlled connections.Discussion
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