Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420) Exam Blueprint

DP-420

40Questions
100 minDuration
700/1-1000Passing Score
$165Price
12Languages
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Exam Domains

1.0 Design and implement data models 35%
  • 1.1Design and implement a non-relational data model for Azure Cosmos DB for NoSQL
    Develop a design by storing multiple entity types in the same container; Develop a design by storing multiple related entities in the same document; Develop a model that denormalizes data across documents; Develop a design by referencing between documents; Identify partition key, id, and unique keys; Identify data and associated access patterns; Specify a default time to live (TTL) on a container for a transactional store; Develop a design for versioning documents; Develop a design for document schema versioning
  • 1.2Design a data partitioning strategy for Azure Cosmos DB for NoSQL
    Choose a partitioning strategy based on a specific workload; Choose a partition key; Plan for transactions when choosing a partition key; Evaluate the cost of using a cross-partition query; Calculate and evaluate data distribution based on partition key selection; Calculate and evaluate throughput distribution based on partition key selection; Construct and implement a synthetic partition key; Design and implement a hierarchical partition key; Design partitioning for workloads that require multiple partition keys
  • 1.3Plan and implement sizing and scaling for a database created with Azure Cosmos DB
    Evaluate the throughput and data storage requirements for a specific workload; Choose between serverless, provisioned and free tier; Choose when to use database-level provisioned throughput; Design for granular scale units and resource governance; Evaluate the cost of the global distribution of data
2.0 Design and implement data distribution 5%
  • 2.1Design and implement a replication strategy for Azure Cosmos DB
    Choose when to distribute data; Define automatic failover policies for regional failure for Azure Cosmos DB for NoSQL; Perform manual failovers to move single master write regions; Choose a consistency model; Identify use cases for different consistency models; Evaluate the impact of consistency model choices on availability and associated request unit (RU) cost; Evaluate the impact of consistency model choices on performance and latency; Specify application connections to replicated data; Design and implement multi-region writes
  • 2.2Implement a custom conflict resolution policy for Azure Cosmos DB for NoSQL
3.0 Integrate an Azure Cosmos DB solution 5%
  • 3.1Enable Azure Cosmos DB analytical workloads
    Configure Azure Cosmos DB Mirroring for Microsoft Fabric; Choose between Azure Cosmos DB Mirroring and the Azure Cosmos DB Spark connector; Enable the analytical store on a container; Enable a connection to an analytical store and query from Azure Synapse Spark or Azure Synapse SQL; Perform a query against the transactional store from Spark; Write data back to the transactional store from Spark; Implement Change Data Capture in the Azure Cosmos DB analytical store
  • 3.2Implement solutions across services
    Integrate events with other applications by using Azure Functions and Azure Event Hubs; Denormalize data by using Change Feed and Azure Functions; Enforce referential integrity by using Change Feed and Azure Functions; Aggregate data by using Change Feed and Azure Functions, including reporting; Archive data by using Change Feed and Azure Functions; Implement Azure AI Search for an Azure Cosmos DB solution
4.0 Optimize an Azure Cosmos DB solution 15%
  • 4.1Optimize query performance when using the API for Azure Cosmos DB for NoSQL
    Adjust indexes on the database; Calculate the cost of the query; Retrieve request unit cost of a point operation or query; Implement Azure Cosmos DB integrated cache
  • 4.2Design and implement change feeds for Azure Cosmos DB for NoSQL
    Develop an Azure Functions trigger to process a change feed; Consume a change feed from within an application by using the SDK; Manage the number of change feed instances by using the change feed estimator; Implement denormalization by using a change feed; Implement referential enforcement by using a change feed; Implement aggregation persistence by using a change feed; Implement data archiving by using a change feed
  • 4.3Define and implement an indexing strategy for Azure Cosmos DB for NoSQL
    Choose when to use a read-heavy versus write-heavy index strategy; Choose an appropriate index type; Configure a custom indexing policy by using the Azure portal; Implement a composite index; Optimize index performance
5.0 Maintain an Azure Cosmos DB solution 25%
  • 5.1Monitor and troubleshoot an Azure Cosmos DB solution
    Evaluate response status code and failure metrics; Monitor the Normalized RU Consumption metric by using Azure Monitor; Monitor server-side latency metrics by using Azure Monitor; Monitor data replication in relation to latency and availability; Configure Azure Monitor alerts for Azure Cosmos DB; Implement and query Azure Monitor resource logs for Azure Cosmos DB; Monitor throughput across partitions; Monitor distribution of data across partitions; Monitor security by using logging and auditing
  • 5.2Implement backup and restore for an Azure Cosmos DB solution
    Choose between periodic and continuous backup; Configure periodic backup; Configure continuous backup and point-in-time restore; Locate a restore point for a point-in-time restore; Restore a database or container from a restore point
  • 5.3Implement security for an Azure Cosmos DB solution
    Choose between service-managed and customer-managed encryption keys; Configure network-level access control for Azure Cosmos DB; Configure data encryption for Azure Cosmos DB; Manage control plane access to Azure Cosmos DB by using Azure role-based access control (RBAC); Manage control plane access to Azure Cosmos DB Data Explorer by using Azure role-based access control (RBAC); Manage data plane access to Azure Cosmos DB by using Microsoft Entra ID; Configure cross-origin resource sharing (CORS) settings; Manage account keys by using Azure Key Vault; Implement customer-managed keys for encryption; Implement Always Encrypted
  • 5.4Implement data movement for an Azure Cosmos DB solution
    Choose a data movement strategy; Move data by using client SDK bulk operations; Move data by using Azure Data Factory and Azure Synapse pipelines; Move data by using a Kafka connector; Move data by using Azure Stream Analytics; Move data by using the Azure Cosmos DB Spark connector; Configure Azure Cosmos DB as a custom endpoint for an Azure IoT Hub
  • 5.5Implement a DevOps process for an Azure Cosmos DB solution
    Choose when to use declarative versus imperative operations; Provision and manage Azure Cosmos DB resources by using Azure Resource Manager templates; Migrate between standard and autoscale throughput by using PowerShell or Azure CLI; Initiate a regional failover by using PowerShell or Azure CLI; Maintain indexing policies in production by using Azure Resource Manager templates

Exam Details

Question TypesMultiple Choice, Multiple Response, Drag and Drop, Case Study, Build List, Hot Area, Repeated Answer Choices
FormatLinear
Online ProctoringAvailable
ID RequirementsOne valid, government-issued photo ID. Name on ID must match registration. For online: webcam required, room must be clear of people and materials.
RenewalRequired -- Microsoft certifications (Associate/Expert/Specialty) are renewed annually for free via a short renewal assessment on Microsoft Learn. Renewal assessment available 6 months before expiry. Fundamentals certifications do not expire.
PrerequisitesDeveloping apps for Azure, working with Azure Cosmos DB database technologies, creating server-side objects with JavaScript, and being proficient at developing applications that use the Azure Cosmos DB for NoSQL API.
Retake PolicyNo waiting period for first retake if score >= 500 on failed attempt. If score < 500: 14-day waiting period before retake. Maximum 5 attempts per exam per year (365 days). Free retake voucher sometimes included in official instructor-led training.
LanguagesEnglish, Simplified Chinese, Traditional Chinese, French, German, Japanese, Korean, Portuguese, Russian, Spanish, Arabic, Indonesian

Official Study Resources