Practice designing, building, securing and tuning Azure Cosmos DB for NoSQL apps, including vector search, RAG and agent memory.
4.2(347 reviews)
The DP-420 exam, Building AI Applications with Azure Cosmos DB, checks that you can design, build
4.2 out of 5 from 347 reviews
Okay prep for app design. The short review is this: good coverage.
Mongo API, vector search basics, and multi-region writes showed up a lot in the practice set. I liked that the explanations stayed focused on tradeoffs instead of just definitions.
Useful, though the indexing policy section took longer than expected. The items on consistency levels and TTL were the clearest part.
Good on partition keys, RU cost, and change feed. A few questions were phrased oddly, but the scenarios felt realistic enough for practice.
No. We write original exam-style practice questions that cover the same skill areas as the official study guide. We don't sell copies of real exam questions.
Microsoft requires a score of 700 or greater on a scale of 1 to 1000.
Yes. It is valid for one year. You can renew it for free by passing an online assessment on Microsoft Learn.
Yes. They follow the skills measured as of October 6, 2026, including vector search, RAG, agent memory and Fabric mirroring.
Yes. Many questions show C# or Python SDK code, so you should be able to read either one.