Which surveillance configuration involves detectors placed around a high-value target to enable early warning of CBRN threats?

• A. Area Array
• B. Critical Node
• C. Periodic
• D. Continuous

Answer: (B)

The main idea is protecting a high-value asset by surrounding it with sensors to catch threats before they reach the target. A critical node setup places detectors around that asset, creating an early-warning ring that alerts you at the boundary as soon as a threat is detected. This focus on surrounding and guarding a single, important point makes it the best fit for enabling early warning of CBRN threats targeted at that asset.

Area array spreads sensors over a broader region rather than concentrating around one target, which isn’t as specifically protective of a single high-value asset. Periodic implies sensing at set times or intervals, not necessarily forming a protective perimeter. Continuous suggests nonstop monitoring, but without the emphasis on surrounding a particular target to provide early boundary detection.