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Microsoft Azure Cosmos DB Developer Specialty DP-420 Braindumps

DP-420

Exam Code: DP-420

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

Updated: Jul 29, 2026

Q & A: 281 Questions and Answers

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About Microsoft DP-420 Real Exam Collection

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

Candidates for this exam must have solid knowledge and experience developing apps for Azure and working with Azure Cosmos DB database technologies. They should be proficient at developing applications by using the Core (SQL) API and SDKs, writing efficient queries and creating appropriate index policies, provisioning and managing resources in Azure, and creating server-side objects with JavaScript. They should be able to interpret JSON, read C# or Java code, and use PowerShell.

The English language version of this exam will be updated on August 4, 2022. Please download the skills measured document below to see what’s changing. If a localized version of this exam is available, it will be updated approximately eight weeks after this date.

Passing score: 700. Learn more about exam scores.

Part of the requirements for: Microsoft Certified: Azure Cosmos DB Developer Specialty

Download exam skills outline

Here is the easiest way to get prepared for the Microsoft DP-420 Certification Exam

You can get ready for taking the Microsoft DP-420 Certification Exam by following the steps mentioned here. You should always make a study plan for the Microsoft DP-420 Certification Exam. You should know the exam objectives and syllabus. The candidate should also know the previous question and answer of the DP-420 Certification Exam. You should prepare the questions and answers of the DP-420 Certification Exam by referring to the study materials. After that, you should always make a mock test for the Microsoft DP-420 Certification Exam. You should take a mock test before the actual exam.

You can also use DP-420 Dumps. It will help you to get a clear idea about your preparation. You should also take a mock test periodically. You should also compare your performance with other candidates. It will help you to get a clear idea about your preparation. In the end, you should practice the DP-420 Certification Exam by using the practice test software. It will help you to get a clear idea about your preparation. You should also practice the questions and answers of the DP-420 Certification Exam. You should try to solve the questions as soon as you finish reading the question.

Get to know about the difficulties you can face while preparing for the Microsoft DP-420 Certification Exam

There are several difficulties you may face while preparing for the Microsoft DP-420 Certification Exam. Following are the difficulties you may face while preparing for the Microsoft DP-420 Certification Exam:

Time management is one of the most important skills to prepare for the Microsoft DP-420 Certification Exam. You should always manage your time properly. It will help you to prepare for the DP-420 Certification Exam in the given time. You should manage your stress levels. You should never get stressed while preparing for the Microsoft DP-420 Certification Exam. Stress will not only affect your preparation but will also affect your performance during the DP-420 Certification Exam. You should always prepare the questions of the Microsoft DP-420 Certification Exam in advance. You should prepare for the DP-420 Certification Exam by using the latest DP-420 Dumps.

Sometimes, you may not get all the resources to prepare for the DP-420 Certification Exam. So, you should always be ready to prepare for the DP-420 Certification Exam. You should always be ready to face the latest technologies. It will help you to prepare for the DP-420 Certification Exam and to get a good job. You should always be ready to forget things. You should always remember the things you learn from the Microsoft DP-420 Certification Exam. You should always be prepared to forget things. The candidate should always be ready to study at the given time. You should study for the DP-420 Certification Exam at the given time. You should also prepare for the DP-420 Certification Exam during your free time.

What are the prerequisites to take the Microsoft DP-420 Certification Exam?

There are no prerequisites for the Microsoft DP-420 Certification 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: Maintain an Azure Cosmos DB solution25-30%- Monitor and troubleshoot Azure Cosmos DB solutions
  • 1. Monitor metrics and logs
  • 2. Troubleshoot throughput issues
  • 3. Monitor performance and availability
  • 4. Implement backup and recovery strategies
Topic 2: Design and implement data distribution5-10%- Design and implement replication strategy
  • 1. Evaluate consistency model impacts
  • 2. Perform manual failovers
  • 3. Choose a consistency model
  • 4. Choose when to distribute data
  • 5. Define automatic failover policies
- Design and implement multi-region writes
  • 1. Choose when to use multi-region writes
  • 2. Implement multi-region writes
  • 3. Implement conflict resolution policies
Topic 3: Integrate an Azure Cosmos DB solution5-10%- Enable analytical workloads
  • 1. Query analytical store from Synapse
  • 2. Write data back from Spark
  • 3. Configure Azure Cosmos DB Mirroring
  • 4. Enable analytical store
- Implement solutions across services
  • 1. Enforce referential integrity
  • 2. Integrate Azure Functions and Event Hubs
  • 3. Use Change Feed for denormalization
  • 4. Aggregate and archive data
  • 5. Implement Azure AI Search integration
Topic 4: Design and implement data models35-40%- Design a data partitioning strategy
  • 1. Choose a partition key
  • 2. Evaluate cross-partition query cost
  • 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. Configure throughput
  • 3. Design resource governance and scaling
  • 4. Evaluate global distribution costs
  • 5. Evaluate throughput and storage requirements
- Implement data access
  • 1. Implement optimistic concurrency control
  • 2. Use consistency and query request options
  • 3. Implement SQL queries with arrays and aggregation
  • 4. Use SDKs for CRUD operations
  • 5. Implement patch operations
  • 6. Manage transactional batch operations
- Implement client connectivity options
  • 1. Use Azure Cosmos DB emulator
  • 2. Create database connections
  • 3. Handle connection errors
  • 4. Configure client-side threading and logging
  • 5. Implement singleton client
  • 6. Choose gateway or direct connectivity mode
- Design and implement a non-relational data model for Azure Cosmos DB for NoSQL
  • 1. Identify partition key, id, and unique keys
  • 2. Store multiple entity types in the same container
  • 3. Reference between documents
  • 4. Identify data and associated access patterns
  • 5. Store multiple related entities in the same document
  • 6. Denormalize data across documents
- Implement server-side programming
  • 1. Implement user-defined functions
  • 2. Implement triggers
  • 3. Write and deploy stored procedures
Topic 5: Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Optimize index performance
  • 2. Choose appropriate index types
  • 3. Configure custom indexing policies
  • 4. Implement composite indexes
  • 5. Choose read-heavy or write-heavy indexing
- Design and implement change feeds
  • 1. Manage change feed instances
  • 2. Develop Azure Functions triggers
  • 3. Consume change feeds using SDK
  • 4. Implement aggregation persistence
- Optimize query performance
  • 1. Calculate query cost
  • 2. Retrieve request unit cost
  • 3. Implement integrated cache
  • 4. Adjust indexing policies
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