ISA/IECISA/IEC 62443IEC 62443: Zones, Conduits & Security LevelsEASYFree question

In a water utility, SCADA servers at Level 2 need to send data to the enterprise historian. Through which zone should this traffic flow?

A.Directly from Level 2 to Level 4
B.Through Level 5
C.Through Level 0
D.Through the DMZ (Level 3.5)

Why D is correct

Data should flow through the DMZ, which acts as an intermediary to prevent direct communication between control and enterprise zones.

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In a water utility, SCADA servers at Level 2 need to send data to the enterprise historian. Through which zone should this traffic flow?

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In a water utility, SCADA servers at Level 2 need to send data to the enterprise historian. Through which zone should this traffic flow?

Where this fits in the ISA/IEC 62443 exam

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