When is two-phase config rollout useful?
Practice this question from Quiz: Centralized Dynamic Configuration System, with options and an explanation.
Question
When is two-phase config rollout useful?
Option A — Correct answer
When mixed config versions can cause correctness issues
Option B
For every log-level change
Option C
Only for UI color changes
Option D
Never in distributed systems
Explanation
Prepare/activate gives stronger coordination for critical config.