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Microsoft DP-420 certification exam is an essential certification for cloud developers who want to demonstrate their expertise in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. DP-420 exam is designed to test an individual's knowledge and skills in creating secure, scalable, and highly available applications using Cosmos DB - a globally distributed, multi-model database service that offers low latency and high throughput.

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Microsoft DP-420 (Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB) certification exam is designed for professionals who want to demonstrate their expertise in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB certification validates the candidate's ability to design and implement scalable and highly available cloud-native applications using Azure Cosmos DB.

Microsoft DP-420 exam is an excellent opportunity for IT professionals to showcase their skills and knowledge in designing and implementing cloud-native applications using Microsoft Azure Cosmos DB. With the increasing demand for cloud-native applications, passing DP-420 exam will not only validate your expertise but also help you stay competitive in the job market.

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Microsoft DP-420 certification exam covers a wide range of topics, including Azure Cosmos DB's architecture, data modeling, partitioning, global distribution, and security. Professionals who pass DP-420 exam will have a strong understanding of how to design and implement cloud-native applications using Azure Cosmos DB's APIs and SDKs. They will also be able to optimize performance, troubleshoot common issues, and monitor the health of their Azure Cosmos DB instances.

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

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