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  • DP-420 (Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB)
Exam Code: DP-420
Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
Certification Provider: Microsoft
Corresponding Certification: Azure Cosmos DB Developer Specialty

Microsoft : DP-420 Questions & Answers

DP-420

Updated: Sep 03, 2026

No. of Questions: 281 Questions & Answers with Testing Engine

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Skills measured

  • Design and implement data distribution (5–10%)
  • The English language version of this exam will be updated on August 4, 2022. Please download the exam skills outline below to see what’s changing.
  • Design and implement data models (35–40%)
  • Integrate an Azure Cosmos DB solution (5–10%)
  • Optimize an Azure Cosmos DB solution (15–20%)
  • Maintain an Azure Cosmos DB solution (25–30%)

Get to know about the salary of the Microsoft DP-420 certified professional

The salary of the Microsoft DP-420 Certified professional depends on the type of the organization, company size, location, and the number of years of experience. It also depends on the job title of the Microsoft DP-420 certified professional. The average salary a Microsoft DP-420 certified professional can get, after passing the exam with the help of the DP-420 Dumps is as follows:

  • In India: 45,000 INR
  • In Sweden: 37,000 SEK
  • In the United States: 85,000 USD
  • In Germany: 43,000 EUR
  • In the United Kingdom: 56,000 GBP

Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/dp-420?WT.mc_id=Azure_blog-wwl

Microsoft DP-420 Exam Syllabus Topics:

SectionWeightObjectives
Design and implement data models35-40%- Design and implement a non-relational data model for Azure Cosmos DB for NoSQL
  • 1. Store multiple related entities in the same document
  • 2. Identify partition key, id, and unique keys
  • 3. Store multiple entity types in the same container
  • 4. Identify data and associated access patterns
  • 5. Denormalize data across documents
  • 6. Reference between documents
- Implement server-side programming
  • 1. Write and deploy stored procedures
  • 2. Implement user-defined functions
  • 3. Implement triggers
- Implement client connectivity options
  • 1. Choose gateway or direct connectivity mode
  • 2. Implement singleton client
  • 3. Use Azure Cosmos DB emulator
  • 4. Create database connections
  • 5. Configure client-side threading and logging
  • 6. Handle connection errors
- Implement data access
  • 1. Implement patch operations
  • 2. Implement optimistic concurrency control
  • 3. Use consistency and query request options
  • 4. Implement SQL queries with arrays and aggregation
  • 5. Use SDKs for CRUD operations
  • 6. Manage transactional batch operations
- Plan and implement sizing and scaling
  • 1. Choose between serverless, provisioned, and free tier
  • 2. Design resource governance and scaling
  • 3. Evaluate global distribution costs
  • 4. Evaluate throughput and storage requirements
  • 5. Configure throughput
- Design a data partitioning strategy
  • 1. Evaluate throughput and data distribution
  • 2. Plan for transactions with partition keys
  • 3. Implement synthetic partition keys
  • 4. Choose a partition key
  • 5. Choose a partitioning strategy
  • 6. Evaluate cross-partition query cost
Design and implement data distribution5-10%- Design and implement replication strategy
  • 1. Choose when to distribute data
  • 2. Evaluate consistency model impacts
  • 3. Define automatic failover policies
  • 4. Choose a consistency model
  • 5. Perform manual failovers
- Design and implement multi-region writes
  • 1. Implement multi-region writes
  • 2. Choose when to use multi-region writes
  • 3. Implement conflict resolution policies
Maintain an Azure Cosmos DB solution25-30%- Monitor and troubleshoot Azure Cosmos DB solutions
  • 1. Monitor metrics and logs
  • 2. Implement backup and recovery strategies
  • 3. Troubleshoot throughput issues
  • 4. Monitor performance and availability
Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Optimize index performance
  • 2. Configure custom indexing policies
  • 3. Choose read-heavy or write-heavy indexing
  • 4. Implement composite indexes
  • 5. Choose appropriate index types
- Design and implement change feeds
  • 1. Consume change feeds using SDK
  • 2. Manage change feed instances
  • 3. Develop Azure Functions triggers
  • 4. Implement aggregation persistence
- Optimize query performance
  • 1. Implement integrated cache
  • 2. Calculate query cost
  • 3. Retrieve request unit cost
  • 4. Adjust indexing policies
Integrate an Azure Cosmos DB solution5-10%- Enable analytical workloads
  • 1. Enable analytical store
  • 2. Configure Azure Cosmos DB Mirroring
  • 3. Write data back from Spark
  • 4. Query analytical store from Synapse
- Implement solutions across services
  • 1. Implement Azure AI Search integration
  • 2. Aggregate and archive data
  • 3. Enforce referential integrity
  • 4. Use Change Feed for denormalization
  • 5. Integrate Azure Functions and Event Hubs

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