DP-420Azure Cosmos DB Developer Specialty practice exams
Original questions written from the published objectives and cited to official documentation, never recalled exam content. How we verify, why not dumps.
- Exam code
- DP-420
- Cost
- $165USD
- Questions
- 40 to 60
- Duration
- 100minutes
- Passing score
- 700(scale 1-1000)
- Level
- Mid level
- Study guide
- How to prepare
- Sources
- 17official pages
- Format
- Multiple choice, drag-and-drop, hot area, and case studies
Cosmos DB Developer practice exams
2 full-length forms, 40 questions each, apportioned to the published domain weightings.
Still being written. Domain Drill opens when every domain holds 12 verified questions. Still short: Design and implement data distribution and Integrate an Azure Cosmos DB solution.
What is the maximum depth of a hierarchical partition key?
The answer
Three levels
Checked against
learn.microsoft.com, checked August 2026…such as on SessionId. The overall depth can't exceed three levels.
What the exam tests
Exam domains and official weightings
The percentage is the exam weighting; the bar is how many verified questions we hold there, so a short bar is where our bank is thin.
- Design and implement data models38%30 verified
- Design and implement data distribution8%6 verified
- Integrate an Azure Cosmos DB solution8%6 verified
- Optimize an Azure Cosmos DB solution18%14 verified
- Maintain an Azure Cosmos DB solution28%24 verified
Open now. 2 complete practice exams, 40 questions each and Quick Practice on all 80 verified questions.
Opens next. Domain Drill opens when every domain holds 12 verified questions. Still short: Design and implement data distribution and Integrate an Azure Cosmos DB solution.
Every question here is checked against the official page it cites before it serves, which is why the count grows slowly.
What the exam actually asks you to do
Multiple choice and multiple response, plus drag-and-drop ordering, hot area items where you click a region of a screenshot, and case studies that hold one scenario across several linked questions.
Item formats
- Multiple choice
- Multiple response
- Drag and drop
- Hot area
- Case study
The highlighted formats are the ones you cannot answer from memory alone. Microsoft Learn, exam duration and question types ↗
Between sittings
The same bank the numbered forms are assembled from.
Quick Practice
Open now
All 80 verified questions, untimed, with the explanation after each answer.
Domain Drill
Opens later
Opens when every domain holds 12 verified questions. Still short: Design and implement data distribution, Integrate an Azure Cosmos DB solution.
Review Missed
Fills as you go
Re-asks the questions you got wrong. Nothing to review until you miss something.
Microsoft Azure’s free resources
Study from the source. The page below is free to read, and it is what our own questions are written from.
Official Cosmos DB Developer exam page & objectives ↗Keep reading
- Free Cosmos DB Developer practice test
10 original questions, playable now. No account, no card.
- Cosmos DB Developer exam format
How many questions, how long, what the items look like, and how long it stays valid.
- Cosmos DB Developer passing score
The exact cut score, what kind of number it is, and the retake terms.
- How hard is Cosmos DB Developer?
An honest difficulty read from the format, the clock and the weights.
- What Cosmos DB Developer costs
The voucher price, the retake, and what renewal costs across the cycle.
- Cosmos DB Developer guide
Who it is for, study plans by experience level, and whether it is worth it.
Frequently asked questions
What decides pass or fail on DP-420?
Data modelling, at 38 percent the dominant domain: partition key choice, embedding against referencing, and designing for the request-unit budget. Most wrong answers on this exam are partition keys that will not scale.
Is DP-420 only for the NoSQL API?
The exam centers on the API for NoSQL, with the SDKs, change feed, indexing policy and consistency levels examined through it. Familiarity with the portal alone is not enough; the SDK behavior is where questions live.
Note on domain weightings
Microsoft publishes weightings as ranges. The figures here use midpoints of the official ranges from the current DP-420 study guide.