Urban Defense measures?

• A. Only active measures
• B. Active and passive measures
• C. Only camouflage
• D. Economic measures

Answer: (B)

Urban defense relies on combining actions that both detect and deter threats and those that reduce vulnerability. Active measures are about finding, preventing, and responding to threats in real time: intelligence, surveillance and reconnaissance, early warning, rapid reactions, patrols, and counter-threat operations that disrupt or defeat adversaries before they cause harm. In a dense urban setting, this proactive layer is essential because threats can exploit crowded streets and complex layouts.

Passive measures reduce the impact even if a threat gets through the first line of defense: hardening critical facilities and routes, controlled access, redundancy and alternate pathways, camouflage and concealment, physical barriers, and measures to maintain operations under stress. Together, these layers create a more resilient defense that addresses both the likelihood and the consequence of attacks. Relying on only one type leaves gaps—purely active measures can miss hidden or rapid threats, while purely passive measures do not provide the dynamic response needed in a contested city environment.