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Microsoft DP-420

DP-420

Exam Code: DP-420

Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB

Updated: Aug 29, 2026

Q & A: 281 Questions and Answers

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About Microsoft DP-420 Exam

What are the objectives of the Microsoft DP-420 Certification Exam?

As per the guidance of the DP-420 Dumps, there are 02 main objectives of the Microsoft DP-420 Certification Exam. The first is to understand Azure Cosmos DB architecture & components, and the second is to understand the design and implementation of cloud-native applications using Microsoft Azure Cosmos DB. Assessment of the candidate's technical knowledge and skills in the field of Azure SQL Database Administration.

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Here is the registration process of the Microsoft DP-420 Certification Exam

The registration process for the Microsoft DP-420 Certification Exam is very simple and straightforward. You just need to follow the steps given in the DP-420 Dumps. These steps are also given below to get registered for the DP-420 Certification Exam:

  • Go to the official website of Microsoft. Click on the “Schedule Exam”, which will take you to the Exam Registration Page.
  • Finally, click on the “Register Now” button. You will get a confirmation mail from Microsoft with a link to take the DP-420 Certification Exam. Take the DP-420 Certification Exam at the specified date and time, with the Pearson Vue.
  • Fill in the required details like name, email, and password. After that, enter the required information like your country, your exam center, and your exam date.

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

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