The OSC’s network consists of a single unmanaged switch that connects all devices, including OT...

Applicable Requirement (CMMC Scoping Guidance – Specialized Assets): Specialized Assets (e.g., OT, IoT, GFE, test equipment) are not exempt from CMMC practices. OSCs must provide:

Documented identification in SSP/inventory,

Justification of specialized handling,

Evidence that risk-based security measures are implemented.

Why D is Correct: Assessors must see evidence that isolation is actually implemented (not just planned), plus supporting artifacts showing how remaining applicable practices are addressed (monitoring, inventory, access, etc.). Planned measures alone are insufficient.

Why Other Options Are Insufficient:

A: Installation/config builds do not show operational isolation.

B: Scoping statements alone do not demonstrate implementation.

C: SSP language is descriptive but must be supported by implementation evidence.

References (CCA Official Sources):

CMMC Scoping Guidance — Specialized Assets

CMMC Assessment Guide – Level 2 — Evidence Requirements for Specialized Assets

NIST SP 800-171 Rev. 2 — Asset Management and Risk-Based Controls