A system's _____ depends on its ability to detect problems as they emerge, take appropriate action to intervene, and recover should the interventions fail.

A system's _____ depends on its ability to detect problems as they emerge, take appropriate action to intervene, and recover should the interventions fail.

• A. Redundancy
• B. Resilience
• C. Robustness
• D. Adaptability

Answer: (B)

Resilience describes a system’s ability to handle problems from start to finish: it can detect issues as they arise, take appropriate corrective actions to keep operating, and recover if those actions don’t fully restore function. In a UAS, this means monitoring health and performance, switching to backup sensors or modes when a fault is detected, and executing recovery procedures such as safe landing or degraded-operation modes if needed. This holistic loop—detect, intervene, and recover—is what makes a system truly resilient. Redundancy focuses on having spare parts to prevent failures, robustness is about withstanding disturbances without failing, and adaptability is about adjusting to new conditions; none of these inherently guarantee the full detect–intervene–recover capability that resilience embodies.

Resilience describes a system’s ability to handle problems from start to finish: it can detect issues as they arise, take appropriate corrective actions to keep operating, and recover if those actions don’t fully restore function. In a UAS, this means monitoring health and performance, switching to backup sensors or modes when a fault is detected, and executing recovery procedures such as safe landing or degraded-operation modes if needed. This holistic loop—detect, intervene, and recover—is what makes a system truly resilient. Redundancy focuses on having spare parts to prevent failures, robustness is about withstanding disturbances without failing, and adaptability is about adjusting to new conditions; none of these inherently guarantee the full detect–intervene–recover capability that resilience embodies.