Q1 Functions Domain 3 · 20–25% of exam Priority · Real Exam

Which Durable pattern runs many activities in parallel and aggregates their results?

  1. A Function chaining
  2. B Fan-out/fan-in (correct answer)
  3. C Monitor
  4. D Human interaction

Shortcut: WhenAll to collect results once all complete.

Fan-out/fan-in starts multiple activity tasks without awaiting each, then awaits Task.WhenAll to collect results once all complete.

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