Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB : DP-420

  • Exam Code: DP-420
  • Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
  • Updated: Aug 05, 2026
  • Q & A: 281 Questions and Answers

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  • Number of Questions: 40-60
  • The passing scores: 70%
  • Languages: English
  • Time Duration: 60 minutes

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What is the Microsoft DP-420 Certification Exam and why it is created?

DP-420 Certification Exam is also known as Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (beta). DP-420 Certification Exam is authorized by Microsoft and is an IT professional certification exam that is designed to test the knowledge and skills of the candidates for designing and implementing cloud-native applications using Microsoft Azure Cosmos DB database technologies. This certification exam is a part of the Microsoft IT Professional certification program and is the final certification exam for Azure SQL Database Administration. DP-420 Dumps is the most reliable and easiest way to pass the DP-420 exam.

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

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Microsoft DP-420 Exam Syllabus Topics:

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

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