Q27 Functions Domain 3 · 20–25% of exam Priority · Real Exam

A blob-triggered function occasionally misses new blobs on the Consumption plan. Which alternative is more reliable at scale?

  1. A Increase the polling interval
  2. B Use Event Grid-based blob triggers (correct answer)
  3. C Add more instances
  4. D Switch to a Timer trigger

Shortcut: The classic blob trigger polls and scans logs, which can delay or miss events at scale. The Event Grid blob trigger is push-based and near-instant.