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Last Updated: Aug 16, 2026

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The DP-420 exam consists of around 40-60 multiple choice and scenario-based questions. DP-420-KR exam is available in multiple languages, including English, Japanese, Chinese (Simplified), and Korean. DP-420-KR exam duration is 150 minutes, and the passing score is 700 out of 1000 points. Candidates who successfully pass the exam will receive the Microsoft Certified: Azure Developer Associate certification, which is valid for two years. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420 Korean Version) certification is recognized worldwide and can help professionals get better job opportunities and higher salaries.

To prepare for the DP-420 exam, Microsoft offers a variety of resources, including official study guides, online courses, and practice exams. You can also find many third-party study materials and practice exams on the internet. It is important to take the time to thoroughly review the exam objectives and ensure that you have a solid understanding of all the topics covered. With the right preparation and a good understanding of cloud-native application development, you can pass the DP-420 exam and demonstrate your expertise in Azure Cosmos DB.

Microsoft DP-420 exam is an advanced-level certification designed to validate the skills and knowledge of professionals in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420 Korean Version) certification is highly valued in the industry and can help professionals advance their careers in cloud-native application development. If you are interested in taking DP-420-KR exam, make sure to prepare thoroughly and gain hands-on experience with Azure Cosmos DB and other related technologies.

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

Microsoft DP-420 certification exam is a comprehensive test designed to evaluate the knowledge and skills of professionals in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420 Korean Version) certification is ideal for candidates who are interested in demonstrating their ability to leverage the power of cloud computing to build scalable, reliable, and high-performance applications.

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Microsoft DP-420 Korean Exam Syllabus Topics:

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