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CISM study material · question 669 of 1000

An interconnection has been down for more than ninety days and the parties want to restore it. What does NIST require?

  1. The original agreements may be reinstated without change
  2. The connection may be restored only with regulatory approval
  3. Each party performs a fresh risk assessment and the planning and implementation requirements including new agreements are reexamined
  4. A verbal confirmation from each authorising official suffices
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Answer: C. Each party performs a fresh risk assessment and the planning and implementation requirements including new agreements are reexamined

SP 800-100 treats a link down beyond ninety days as needing a fresh start: each side reassesses risk on its own system and revisits the planning and implementation requirements, new agreements included.

Source: NIST SP 800-100 (NIST) — Sec. 6.3.2 Restoration of Interconnection

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