Refer to the exhibit.
PLC-3 and CLIENT can send traffic to PLC-1 and PLC-2. FGT-2 has only one software switch (SSW-1) connecting both PLC-3 and CLIENT. PLC-3 and CLIENT can send traffic to each other at the Layer 2 level.
What must the OT admin do to prevent Layer 2-level communication between PLC-3 and CLIENT?
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