PracticeStudy GuidesBlogFlashcardsEspañol
All Practice Exams

200+ Free DP-420 Practice Questions

Pass your Azure Cosmos DB Developer Specialty (DP-420) exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
Not published Pass Rate
200+ Questions
100% Free

Loading practice questions...

2026 Statistics

Key Facts: DP-420 Exam

700/1000

Passing Score

Microsoft

40-60

Typical Questions

Microsoft certification exams

100 min

Exam Duration

DP-420 certification page

5

Current Domains

Skills measured Jan 27, 2025

12 months

Renewal Cycle

Microsoft certification page

~$165

Typical U.S. Fee

Microsoft exam pricing guidance

DP-420 is Microsoft’s Azure Cosmos DB specialty certification for developers. The current skills-measured blueprint, last updated January 27, 2025, weights the exam as follows: Design and implement data models (35-40%), Design and implement data distribution (5-10%), Integrate an Azure Cosmos DB solution (5-10%), Optimize an Azure Cosmos DB solution (15-20%), and Maintain an Azure Cosmos DB solution (25-30%). Microsoft’s current exam-experience policy says most certification exams typically contain 40-60 questions, DP-420 gives you 100 minutes, technical exams require a scaled 700/1000 to pass, and pricing varies by region with U.S. technical exams commonly around $165.

About the DP-420 Exam

DP-420 validates your ability to design, implement, integrate, optimize, and maintain cloud-native applications that use Azure Cosmos DB for NoSQL. The current Microsoft blueprint emphasizes data-model and SDK design most heavily, then operational maintenance, with smaller but still important sections on distribution, integration, and performance tuning. Successful candidates are expected to know partitioning, consistency, change feed, indexing, query efficiency, security, monitoring, and multi-region design decisions well enough to apply them to scenario-driven questions.

Questions

50 scored questions

Time Limit

100 minutes

Passing Score

700/1000

Exam Fee

Varies by region (commonly about $165 USD in the U.S.) (Microsoft / Pearson VUE)

DP-420 Exam Content Outline

35-40%

Design and implement data models

Model containers and items, choose partition keys and throughput strategies, configure SDK clients and connectivity modes, write efficient SQL queries, perform point reads and transactional batch operations, and implement server-side JavaScript when the scenario benefits from it.

5-10%

Design and implement data distribution

Plan regional distribution, availability, failover, multi-region writes, and conflict-resolution behavior to meet latency, resilience, and write-availability requirements.

5-10%

Integrate an Azure Cosmos DB solution

Use analytical store and Synapse Link, connect Spark workloads, process change feed events, and integrate Cosmos DB with Azure Functions and adjacent Azure services.

15-20%

Optimize an Azure Cosmos DB solution

Interpret RU charges and diagnostics, tune queries, shape indexing policies, add composite or spatial indexes where justified, use integrated cache, and improve change feed and workload efficiency.

25-30%

Maintain an Azure Cosmos DB solution

Monitor metrics and logs, configure alerts, secure accounts with RBAC, networking, and customer-managed keys, manage backups and restores, automate deployments, and plan operational data movement or migration.

How to Pass the DP-420 Exam

What You Need to Know

  • Passing score: 700/1000
  • Exam length: 50 questions
  • Time limit: 100 minutes
  • Exam fee: Varies by region (commonly about $165 USD in the U.S.)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

DP-420 Study Tips from Top Performers

1Start with the current January 27, 2025 objective map. Design and implement data models is the largest domain and deserves the biggest share of your study time.
2Practice partition-key design with real scenarios. You need to spot hot partitions, cardinality problems, fan-out query risks, and tradeoffs between natural, synthetic, and hierarchical keys quickly.
3Know the cheapest read and write patterns cold: point reads versus SQL queries, patch versus replace, bulk versus transactional batch, and when optimistic concurrency with ETags helps.
4Learn how consistency, preferred regions, multi-region writes, and automatic failover interact so you can reason about latency and availability under failure.
5Tune indexing intentionally. Be able to explain when to exclude paths, add composite indexes, add spatial indexes, or keep the default indexing policy.
6Use change feed hands-on with Azure Functions or the change feed processor library so lease containers, processor scaling, and idempotent downstream handling feel concrete.
7Review operational tooling such as metrics, Insights, diagnostic logs, restore choices, RBAC, private endpoints, and customer-managed keys because the maintenance domain is heavily weighted.
8Treat integrated cache, analytical store, and Synapse Link as architecture choices with cost and latency tradeoffs, not just feature names to memorize.
9Complete all 200 practice questions and aim to score at least 80% consistently before scheduling.

Frequently Asked Questions

What is the DP-420 exam?

DP-420 is the Microsoft Azure Cosmos DB Developer Specialty certification exam. It measures whether you can design and implement data models and distribution, integrate Cosmos DB with other Azure services, optimize throughput and query performance, and maintain a secure, resilient Cosmos DB solution.

How many questions are on DP-420?

Microsoft does not publish a fixed question count for DP-420. Microsoft’s current exam-experience documentation says most certification exams typically contain 40-60 questions, and the DP-420 certification page gives you 100 minutes to complete the exam.

What changed on DP-420 in 2026?

As of March 9, 2026, Microsoft has not posted a new DP-420 skills-measured update in 2026. The current official blueprint was last updated on January 27, 2025. The current 2026 Microsoft exam-experience rules still apply, including Microsoft Learn access during role-based and specialty exams, 100-minute role-based exam timing without labs, and the current retake policy.

How hard is the DP-420 exam?

DP-420 is moderately difficult to challenging because it tests design judgment rather than rote feature recall. The hardest areas for many candidates are partition-key tradeoffs, RU and indexing optimization, change feed architecture, multi-region write behavior, and choosing the least-cost design that still meets latency, consistency, and resiliency goals.

How long should I study for DP-420?

Most candidates need about 50-80 focused study hours over 4-8 weeks. If you already build production workloads on Azure Cosmos DB for NoSQL, you may need less; if partitioning, indexing, change feed, Synapse Link, or multi-region design are newer to you, budget extra hands-on time.

Does the Azure Cosmos DB Developer Specialty certification expire?

Yes. Microsoft currently lists a 12-month renewal frequency for the certification. You can renew it for free by completing the online renewal assessment on Microsoft Learn before the credential expires.

Can I use Microsoft Learn during the DP-420 exam?

Yes. Microsoft’s current exam-experience policy allows Microsoft Learn access during associate, expert, and specialty exams. The timer keeps running while you browse Learn, so it works best as a quick reference rather than a substitute for preparation.