Learn with Microsoft : DP-420 training material for 100% pass

Updated: Aug 26, 2026

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Microsoft DP-420 Exam Overview:

Certification Vendor:Microsoft
Exam Name:Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
Exam Number:DP-420
Real Exam Qty:40-60
Exam Duration:100-120
Related Certifications:Microsoft Certified: Azure Cosmos DB Developer Specialty
Certificate Validity Period:1 year
Available Languages:English, Japanese, Chinese (Simplified), Korean
Exam Format:Multiple choice, Case study, Drag and drop, Hot area, Lab
Passing Score:700/1000
Exam Price:$165 USD
Sample Questions:Microsoft DP-420 Sample Questions
Exam Way:Online proctored exam or in-person test center
Pre Condition:No formal prerequisite exams are required. Candidates should have experience developing Azure solutions and working with Azure Cosmos DB.
Official Syllabus URL:https://learn.microsoft.com/en-us/credentials/certifications/exams/dp-420/

Who should take the Microsoft DP-420 Certification Exam?

The targeted audience of the Microsoft DP-420 Certification Exam is IT professionals, who are interested in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB database technologies. The Microsoft DP-420 Certification Exam is an important certification exam for every IT professional, who wants to get a job in a reputable company. DP-420 Dumps suggest that those individuals who have job titles like Azure SQL Database Administrator, Azure SQL Database Developer, Azure Cosmos DB Administrator, and Azure Cosmos DB Developer can also take this certification exam.

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

This is more about 70% valid for that i know of. Little new questions. Several questions are right but wrong answers, correct them. I get 88% score. Satisfied!

By Hamiltion

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