DP-420 practice examsFinished
Microsoft Certified: Azure Cosmos DB Developer Specialty
Building on Azure Cosmos DB: the partition key decision that cannot be reversed, embedding against referencing and indexing policy, global distribution with the five consistency levels, the change feed and Synapse Link, request unit optimisation, and backup, security and monitoring.
What you get
Papers are cut from the bank and weighted like the real exam, and no question appears in two of them. Every wrong answer comes back on later days until you have it right.
What the exam covers
| Design and develop database solutions | 40-45% |
| Secure, optimize, and deploy database solutions | 30-35% |
| Implement AI and analytics capabilities in database solutions | 20-25% |
Two sample questions
1. Which feature enables semantic memory, recalling past turns by meaning rather than exact words?
- A unique key on the text
- Embeddings with a vector index — correct
- A spatial index over the turns
- Optimistic concurrency
Why: Semantic memory stores an embedding with each memory and uses a vector index to retrieve by similarity.
2. A serverless account needs zone redundancy. When must it be chosen?
- After the first container
- At account creation — correct
- During a failover
- With a support ticket
Why: Existing serverless accounts can’t be converted.
The real DP-420 exam
| Length | 100 minutes |
|---|---|
| Questions | Not published by Microsoft; commonly reported as 40-60 |
| Pass mark | 700 of 1000 |
| Price | $165 USD |
| Recommended before you sit it | None, though experience with the Cosmos DB SDK in C# or Java and with Azure development is assumed. |
| Valid for | 1 year, renewed free online |
Exam facts as published by Microsoft; always check the vendor’s page before you book.
Study DP-420 with Chiron
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