A Restricted Information System (IS) is defined as an asset that cannot meet modern security controls but is still needed for contract performance. These systems may be declared out of scope if they are properly isolated, mitigated, and documented. A legacy Windows 95 computer meets the definition of a restricted IS.

Supporting Extracts from Official Content:

CMMC Scoping Guide (Level 2): “Restricted IS assets are those that cannot reasonably apply security requirements due to legacy or operational constraints. They are not assessed but must be identified and protected by alternative methods.”

Why Option B is Correct:

The Windows 95 system is an example of a restricted IS, so it can be scoped out.

Option A is incorrect — the asset is not handling CUI in this case.

Option C is incorrect — government property designation does not define scope.

Option D is incorrect — while it is “legacy,” it is not classified as OT; the correct CMMC term is restricted IS.

References (Official CMMC v2.0 Content):

CMMC Scoping Guide, Level 1 and Level 2 – Restricted IS definition.

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