Which type of data is most critical to collect for proving timely response?

• A. Time-stamped event records and notification receipts
• B. Network topology diagrams
• C. Annual operating plan
• D. Equipment maintenance records

Answer: (B)

Proving timely response hinges on having a precise, auditable timeline of what happened and when. Time-stamped event records and notification receipts are the most critical data because they document the exact moments events occurred, alarms fired, actions were taken, and notifications were sent to the right people. This creates a verifiable chain showing that responses happened within the required time windows and allows investigators to reconstruct the sequence of events.

Network topology diagrams describe how components are connected, which is valuable for understanding the system layout, but they don’t show when responses occurred. An annual operating plan lays out procedures you intend to follow, not the actual timing of actions in real events. Equipment maintenance records track the condition and upkeep of assets, not the timing or effectiveness of responses. The time-stamped logs and receipts provide the concrete timing evidence needed to prove compliance with timely-response requirements.