DP-420: Microsoft Azure Cosmos DB Developer Practice Tests

¡Hola! It seems like you're looking for detailed information on the DP-420: Microsoft Azure Cosmos DB Developer Specialty exam and a practice exam to prepare for it. The exam is designed to validate your skills in designing, developing, and managing applications with Azure Cosmos DB, focusing on core data model concepts, performance and scalability, security, indexing, backup, and restore operations.

Here's a summary of the topics you should focus on while preparing for the DP-420 exam:

1. Understand Core Data Model Concepts

   • Understand different data models (document, key-value, graph, and table).
   • Know how to design schemas that optimize for performance and scalability.
   • Understand the impact of different data model choices on application performance.

2. Performance and Scalability

   • Implement multi-region writes and reads.
   • Use change feeds for eventual consistency scenarios.
   • Define and implement an indexing strategy.

3. Security

   • Understand the different encryption options (service-managed versus customer-managed keys).
   • Configure network-level access control, data encryption, and RBAC.
   • Manage account keys using Azure Key Vault.
   • Implement Always Encrypted.

4. Backup and Restore

   • Choose between periodic and continuous backup.
   • Configure and implement backup strategies.
   • Know how to recover databases or containers from a recovery point.

5. Monitoring, Troubleshooting, and Diagnostics

   • Monitor response status code and failure metrics.
   • Evaluate normalized throughput usage and server-side latency.
   • Monitor data replication, security logs, and distribution of data across partitions.
   • Configure Azure Monitor alerts for Azure Cosmos DB.

6. Data Movement

   • Choose a data movement strategy based on the scenario.
   • Move data using various methods such as client SDK bulk operations, Azure Data Factory, Azure Synapse pipelines, Kafka connectors, Stream Analytics, or the Azure Cosmos DB Spark Connector.
   • Configure Azure Cosmos DB as a custom endpoint for Azure IoT Hub.

7. DevOps

   • Use declarative versus imperative operations to manage resources and data.
   • Provision and manage Azure Cosmos DB resources using Azure Resource Manager templates.
   • Maintain indexing policies in production environments.
   • Use PowerShell or Azure CLI to migrate between different throughput modes and to initiate a regional failover.

8. Implement Indexing Strategy for NoSQL

   • Choose when to use a read-heavy versus write-heavy index strategy.
   • Choose an appropriate index type.
   • Configure a custom indexing policy.
   • Implement a composite index.
   • Optimize index performance.

By focusing on these areas, you'll be well-prepared to tackle the DP-420 exam. The practice exam will help you identify any knowledge gaps and ensure that you are comfortable with the breadth of topics covered in the certification. Once you feel confident after using the practice exam, you can schedule the actual exam through the Microsoft Learn website.

Good luck with your studies and your journey towards becoming a Microsoft Azure Cosmos DB Developer Specialist!