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CISM study material · question 659 of 1000

Under what condition does NIST permit the two interconnection documents to be combined, and what must be preserved?

  1. Where the connection is internal to a single organisation, provided that it is documented in the security plans of both of the systems
  2. Where both parties agree in writing, provided a copy is retained
  3. Where both fall under the same authorising official, provided the contents and intent of both remain unaltered
  4. Where the systems share an impact level, provided the risk is reassessed
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Answer: C. Where both fall under the same authorising official, provided the contents and intent of both remain unaltered

SP 800-100 states organisations may combine the two documents to simplify management and reduce paperwork if they fall within the purview of the same authorising official, and that when combining them the contents and intent of both must remain unaltered.

Source: NIST SP 800-100 (NIST) — Sec. 6.2.1 Phase 1 Planning

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