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Microsoft DP-420 exam is an industry-recognized certification designed for professionals who want to prove their expertise in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. This is an advanced-level exam that tests the candidate's knowledge and skills in cloud-native application development, Azure Cosmos DB, and other related technologies.

Microsoft DP-420 is a certification exam that focuses on designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB certification is designed for professionals who are looking to demonstrate their expertise in developing cloud-native applications using Azure Cosmos DB. Azure Cosmos DB is a globally distributed, multi-model database service that is designed for high availability, low latency, and scalability. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB certification exam covers all the essential topics related to Azure Cosmos DB and cloud-native application development.

The DP-420 exam is designed for professionals who have experience working with Azure Cosmos DB, Microsoft's globally distributed, multi-model database service. DP-420 exam tests the candidate's knowledge of cloud-native application development principles, including the use of Azure Cosmos DB's APIs, query languages, and data modeling techniques. Candidates will also be tested on their ability to design and implement secure, scalable, and highly available cloud-native applications.

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

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