The client has a Supervisory Control and Data Acquisition (SCADA) system as OT to be...

In CMMC scoping, only assets that process, store, or transmit CUI (CUI Assets) or that can access them (Security Protection, Contractor Risk Managed, Specialized Assets) are in-scope. Since the SCADA system is firewalled off and does not handle CUI, it does not fall under CUI Asset classification and is considered Out-of-Scope.

Exact extracts:

“CUI Assets are those that process, store, or transmit CUI.”

“Assets that do not process, store, or transmit CUI and have no connectivity to CUI Assets are considered Out-of-Scope.”

“Specialized Assets… are only in-scope if they process, store, or transmit CUI.”

Why the other options are incorrect:

A: Inclusion requires processing/storing/transmitting CUI.

C: OSC cannot arbitrarily bring unrelated systems into scope; CUI relevance governs scope.

D: Not all Specialized Assets are in-scope; only those with CUI interaction are.