Q23 Cosmos DB Domain 2 · 25–30% of exam Priority · Real Exam

A logical partition is approaching the 20 GB storage limit. What is the correct remedy?

  1. A Increase provisioned RU/s
  2. B Re-model with a more granular or synthetic partition key and migrate the data (correct answer)
  3. C Enable autoscale
  4. D Add a read region

Shortcut: The 20 GB logical partition ceiling is fixed. The only fix is choosing a higher-cardinality key, often a synthetic composite such as tenantId-yyyyMM, and migrating into a new container.