A manufacturing facility assigns SL-T 1 to its office network zone and SL-T 3 to its safety system zone. Why the difference?
A.The office network has more users
B.There is no valid reason for the difference
C.The office network is newer
D.The safety system has higher consequences of compromise and faces more sophisticated threats
Why D is correct
Different SL-T values reflect different threat profiles and consequences of compromise. Safety systems warrant higher protection due to potential safety impacts.
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Where this fits in the ISA/IEC 62443 exam
IEC 62443: Zones, Conduits & Security Levels
Zones and conduits partitioning model, security levels (SL 1-4), target vs. achieved vs. capability security levels.
This question belongs to the "Zones, Conduits & Security Levels" domain, which makes up about 20% of the ISA/IEC 62443 exam.
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