Microsoft DP-420 Exam Quick Prep | Practice Test DP-420 Pdf

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Microsoft DP-420 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Integrate an Azure Cosmos DB solution5-10%- Implement solutions across services
  • 1. Integrate Azure Functions and Event Hubs
  • 2. Enforce referential integrity
  • 3. Aggregate and archive data
  • 4. Use Change Feed for denormalization
  • 5. Implement Azure AI Search integration
- 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 2: Maintain an Azure Cosmos DB solution25-30%- Monitor and troubleshoot Azure Cosmos DB solutions
  • 1. Monitor performance and availability
  • 2. Monitor metrics and logs
  • 3. Implement backup and recovery strategies
  • 4. Troubleshoot throughput issues
Topic 3: Design and implement data distribution5-10%- Design and implement replication strategy
  • 1. Define automatic failover policies
  • 2. Evaluate consistency model impacts
  • 3. Perform manual failovers
  • 4. Choose when to distribute data
  • 5. Choose a consistency model
- Design and implement multi-region writes
  • 1. Implement conflict resolution policies
  • 2. Implement multi-region writes
  • 3. Choose when to use multi-region writes
Topic 4: Design and implement data models35-40%- Implement data access
  • 1. Use SDKs for CRUD operations
  • 2. Manage transactional batch operations
  • 3. Use consistency and query request options
  • 4. Implement optimistic concurrency control
  • 5. Implement patch operations
  • 6. Implement SQL queries with arrays and aggregation
- Implement server-side programming
  • 1. Implement triggers
  • 2. Write and deploy stored procedures
  • 3. Implement user-defined functions
- Plan and implement sizing and scaling
  • 1. Design resource governance and scaling
  • 2. Evaluate throughput and storage requirements
  • 3. Evaluate global distribution costs
  • 4. Choose between serverless, provisioned, and free tier
  • 5. Configure throughput
- Implement client connectivity options
  • 1. Handle connection errors
  • 2. Implement singleton client
  • 3. Choose gateway or direct connectivity mode
  • 4. Use Azure Cosmos DB emulator
  • 5. Configure client-side threading and logging
  • 6. Create database connections
- Design and implement a non-relational data model for Azure Cosmos DB for NoSQL
  • 1. Reference between documents
  • 2. Denormalize data across documents
  • 3. Store multiple related entities in the same document
  • 4. Identify data and associated access patterns
  • 5. Store multiple entity types in the same container
  • 6. Identify partition key, id, and unique keys
- Design a data partitioning strategy
  • 1. Evaluate throughput and data distribution
  • 2. Evaluate cross-partition query cost
  • 3. Plan for transactions with partition keys
  • 4. Implement synthetic partition keys
  • 5. Choose a partitioning strategy
  • 6. Choose a partition key
Topic 5: Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Optimize index performance
  • 2. Choose appropriate index types
  • 3. Configure custom indexing policies
  • 4. Choose read-heavy or write-heavy indexing
  • 5. Implement composite indexes
- Design and implement change feeds
  • 1. Consume change feeds using SDK
  • 2. Manage change feed instances
  • 3. Implement aggregation persistence
  • 4. Develop Azure Functions triggers
- Optimize query performance
  • 1. Implement integrated cache
  • 2. Adjust indexing policies
  • 3. Retrieve request unit cost
  • 4. Calculate query cost

>> Microsoft DP-420 Exam Quick Prep <<

Free PDF Quiz 2026 DP-420 - Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Exam Quick Prep

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q27-Q32):

NEW QUESTION # 27
You have an application that queries an Azure Cosmos 06 for NoSQL account.
You discover that the following two queries run frequently,

You need to minimize the request units (RUs) consumed by reads and writes. What should you create?

Answer: D


NEW QUESTION # 28
You have a container in an Azure Cosmos DB Core (SQL) API account. The container stores telemetry data from IoT devices. The container uses telemetryId as the partition key and has a throughput of 1,000 request units per second (RU/s). Approximately 5,000 IoT devices submit data every five minutes by using the same telemetryId value.
You have an application that performs analytics on the data and frequently reads telemetry data for a single IoT device to perform trend analysis.
The following is a sample of a document in the container.

You need to reduce the amount of request units (RUs) consumed by the analytics application.
What should you do?

Answer: B

Explanation:
The partition key is what will determine how data is routed in the various partitions by Cosmos DB and needs to make sense in the context of your specific scenario. The IoT Device ID is generally the "natural" partition key for IoT applications.
Reference: https://docs.microsoft.com/en-us/azure/architecture/solution-ideas/articles/iot-using-cosmos-db


NEW QUESTION # 29
You plan to create an Azure Cosmos DB container named account that will contain items in the following format.

You need to define a query that will return the ids of all accounts that have ever recorded a negative value for balance.
How should you complete the query? To answer, select the appropriate options in the answer are a.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:


NEW QUESTION # 30
You provision Azure resources by using the following Azure Resource Manager (ARM) template.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:

Box 1: No
An alert is triggered when the DB key is regenerated, not when it is used.
Note: The az cosmosdb keys regenerate command regenerates an access key for a Azure Cosmos DB database account.
Box 2: No
Only an SMS action will be taken.
Emailreceivers is empty so no email action is taken.
Box 3: Yes
Yes, an alert is triggered when the DB key is regenerated.
Reference: https://docs.microsoft.com/en-us/cli/azure/cosmosdb/keys


NEW QUESTION # 31
You have the following Azure Resource Manager (ARM) template.

You plan to deploy the template in incremental mode.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.

Answer:

Explanation:

Explanation:


NEW QUESTION # 32
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