Which term describes a system that detects and responds to component failures, such as in data storage or hardware redundancy?

• A. Self-Healing Hardware
• B. RAID Array
• C. FaaS
• D. FPGA

Answer: (A)

Fault tolerance with automated recovery describes systems that continuously monitor components and automatically switch to healthy ones or repair data when a failure occurs, keeping operations running without human intervention. That is what self-healing hardware refers to. It leverages sensors, redundancy, and automatic remediation—such as failover to a standby drive or rebuilding data across a RAID set—so the system maintains availability even as parts fail. RAID arrays provide redundancy and can tolerate disk failures, but the idea of automatic detection and remediation across the whole system is more characteristic of self-healing hardware. FaaS and FPGA address different concepts: FaaS hides infrastructure behind serverless code execution, not hardware fault handling; FPGA is a reconfigurable hardware platform, not a failure-response mechanism. So self-healing hardware best describes a system that detects and responds to component failures.