Docker Certified Associate – Preparation & methodology
Preparing for the Docker Certified Associate (DCA) exam is an achievable goal with the right plan, focused practice, and high-quality mock exams.
Microsoft
Microsoft Certified: Azure Cosmos DB Developer Specialty
The DP-420 certification by Microsoft validates expertise in designing and implementing cloud-native applications using Azure Cosmos DB.
Exam code
DP-420
Duration
150 min
Questions
60
Domain blueprint
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Design and implement non‑relational data models for Azure Cosmos DB (NoSQL): choose container layouts, model related entities within or across documents, denormalize where appropriate, define keys and TTLs, and design for schema and document versioning and common access patterns.
Design data partitioning and distribution strategies: select appropriate partition keys and partitioning schemes, plan throughput and capacity distribution, and design for multi‑region replication, consistency, and data movement/migration.
Integrate Cosmos DB with applications and Azure services using SDKs and APIs: implement server‑side objects (stored procedures, triggers), use the change feed, manage resource provisioning and access, and secure and connect applications to Cosmos DB.
Optimize solution performance and cost: define indexing policies, tune queries and request unit (RU) consumption, configure consistency and throughput, and apply caching and performance‑tuning practices.
Operate and maintain Cosmos DB solutions: monitor and troubleshoot, implement scaling and availability strategies, manage backups and restores, enforce security/role‑based access, and handle lifecycle and maintenance tasks.
Domain 5
Maintain an Azure Cosmos DB solution
Operate and maintain Cosmos DB solutions: monitor and troubleshoot, implement scaling and availability strategies, manage backups and restores, enforce security/role‑based access, and handle lifecycle and maintenance tasks.
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