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Which IaC concept describes ensuring that applying the same configuration twice yields the same result without unintended side effects?
AIdempotency
BPolymorphism
CBackpressure
DEventual consistency
Answer & Solution
Correct answer: A. Idempotency
Idempotent operations can be reapplied safely. Eventual consistency, polymorphism, and backpressure are distributed-systems / OOP / streaming concepts — not IaC's apply-twice property.
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