Which statement best describes how CUI is identified in a classified document?

Which statement best describes how CUI is identified in a classified document?

• A. CUI is identified only in the sections that contain CUI content, marked with "(CUI)"
• B. CUI is identified in the document banner
• C. CUI is identified in the metadata only
• D. CUI is not used in classified documents

Answer: (A)

CUI is identified by marking the sections that actually contain CUI content with a clear (CUI) designation. This ensures anyone handling the document can see precisely which parts require controlled handling, even if they only read a portion of the text. A document banner signals that CUI is present, but it doesn’t indicate which sections hold CUI content. Relying on metadata alone is insufficient because metadata can be incomplete or imperfectly aligned with the actual text. Therefore, the most reliable approach is to identify CUI right in the sections that contain it, using explicit markings in those sections.

CUI is identified by marking the sections that actually contain CUI content with a clear (CUI) designation. This ensures anyone handling the document can see precisely which parts require controlled handling, even if they only read a portion of the text. A document banner signals that CUI is present, but it doesn’t indicate which sections hold CUI content. Relying on metadata alone is insufficient because metadata can be incomplete or imperfectly aligned with the actual text. Therefore, the most reliable approach is to identify CUI right in the sections that contain it, using explicit markings in those sections.