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Which architectural property describes a system that continues operating correctly even when individual components fail?
AAuto-scaling responsiveness
BFault tolerance
CVertical scalability
DSingle-tenancy
Answer & Solution
Correct answer: B. Fault tolerance
Fault tolerance = correct behaviour despite component failures, usually achieved by redundancy. Auto-scaling responds to load. Vertical scalability is single-machine growth. Single-tenancy is isolation, not failure tolerance.
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