Q33 Cosmos DB Domain 2 · 25–30% of exam Priority · Real Exam

What does the RequestCharge header on a Cosmos DB response represent?

  1. A Billing in currency
  2. B The RU/s provisioned on the container
  3. C The RUs consumed by that specific operation (correct answer)
  4. D The number of documents scanned

Shortcut: RequestCharge reports the RU cost of the individual operation. Logging it is the standard way to find expensive queries and tune indexing or partitioning.