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  • DP-420: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB

Microsoft DP-420 Exam Questions

Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
Exam Code: DP-420
Related Certification(s): Microsoft Azure Cosmos DB Developer Specialty Certification
Certification Provider: Microsoft
Actual Exam Duration: 100 Minutes
Number of DP-420 practice questions in our database: 136 (updated: Jan. 05, 2025)
Expected DP-420 Exam Topics, as suggested by Microsoft :
  • Topic 1: Design and Implement Data Models: This topic equips Microsoft developers to design and implement non-relational data models for Azure Cosmos DB for NoSQL, emphasizing partitioning strategies, database sizing, and scaling. Developers master connectivity using the Azure Cosmos DB SDK and SQL language for NoSQL, ensuring seamless data access. Additionally, server-side programming with JavaScript empowers robust solutions tailored to specific application needs.
  • Topic 2: Design and Implement Data Distribution: Microsoft developers delve into designing replication strategies and implementing multi-region writes for Azure Cosmos DB. These skills ensure high availability, fault tolerance, and enhanced global performance for distributed applications, making them vital for enterprise-grade solutions.
  • Topic 3: Integrate an Azure Cosmos DB Solution: This topic focuses on enabling analytical workloads and integrating Azure Cosmos DB across services. Developers learn to leverage cross-service integrations for cohesive solutions, driving advanced analytics and operational efficiency in cloud-native applications.
  • Topic 4: Optimize an Azure Cosmos DB Solution: Developers gain expertise in optimizing query performance using Azure Cosmos DB for NoSQL APIs, implementing change feeds, and crafting effective indexing strategies. This topic ensures solutions are performant, scalable, and adaptive to evolving data requirements, enhancing application responsiveness.
  • Topic 5: Maintain an Azure Cosmos DB Solution: This section covers monitoring, troubleshooting, and securing Azure Cosmos DB solutions. Developers master backup and restore procedures, implement data movement, and streamline processes using DevOps. These skills ensure operational reliability and safeguard data integrity in production environments.
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Erick

1 days ago
Microsoft Cosmos DB cert acquired! Couldn't have done it without Pass4Success's efficient study materials.
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Rosalind

16 days ago
I passed the Azure Cosmos DB exam, and Pass4Success practice questions were a great help. One tricky question was about designing and implementing data models, specifically how to model relationships between entities. Even though I was unsure, I passed!
upvoted 0 times
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Shawnta

1 months ago
Pass4Success rocks! Their prep materials helped me clear the Azure Cosmos DB exam in no time.
upvoted 0 times
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Cheryl

1 months ago
I successfully passed the Microsoft Azure Cosmos DB exam, thanks to Pass4Success. One question that puzzled me was about integrating an Azure Cosmos DB solution with Azure Logic Apps. I wasn't entirely sure how to set up the integration, but I managed to pass!
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Laticia

2 months ago
Happy to announce that I passed the Azure Cosmos DB exam! Pass4Success practice questions were crucial. There was a challenging question on maintaining an Azure Cosmos DB solution, specifically about configuring multi-region writes. I wasn't sure of the best approach, but I still passed!
upvoted 0 times
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Wendell

2 months ago
Are there questions on optimizing query performance?
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Noemi

2 months ago
Aced the Microsoft Cosmos DB exam! Pass4Success really came through with relevant practice questions.
upvoted 0 times
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Catarina

2 months ago
I passed the Microsoft Azure Cosmos DB exam, and Pass4Success practice questions were a big help. One question that had me second-guessing was about optimizing an Azure Cosmos DB solution, particularly how to use indexing policies to improve query performance. Despite my doubts, I passed!
upvoted 0 times
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Mari

3 months ago
How about questions on monitoring and optimizing throughput?
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Gregg

3 months ago
Excited to share that I passed the Azure Cosmos DB exam! The practice questions from Pass4Success were invaluable. There was a tough question on designing and implementing data distribution, specifically about choosing the right partition strategy for a global application. I wasn't completely confident, but I passed!
upvoted 0 times
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Sage

3 months ago
Are there questions on implementing server-side programming?
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Glen

3 months ago
I passed the Microsoft Azure Cosmos DB exam, and Pass4Success was instrumental. One question I found challenging was about designing and implementing data models, particularly how to use partition keys effectively. Even though I was unsure, I succeeded!
upvoted 0 times
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Alysa

3 months ago
Whew, that Azure Cosmos DB cert was tough! Grateful for Pass4Success - their materials were a lifesaver.
upvoted 0 times
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Sanjuana

3 months ago
How much emphasis is there on Cosmos DB's analytical capabilities?
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Gilma

4 months ago
Just cleared the Azure Cosmos DB exam! Pass4Success practice questions were a huge help. There was a tricky question on integrating an Azure Cosmos DB solution with Azure Functions. I wasn't sure about the best way to trigger a function from a Cosmos DB change feed, but I still made it through.
upvoted 0 times
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Matilda

4 months ago
Throughput management is a key focus. You'll see questions on provisioning and scaling RUs, implementing autoscale, and monitoring throughput usage. Understand how to optimize for cost-effective performance. Pass4Success materials had great scenarios on throughput optimization.
upvoted 0 times
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Precious

4 months ago
I recently passed the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB exam, thanks to the practice questions from Pass4Success. One question that stumped me was about maintaining an Azure Cosmos DB solution, specifically how to handle automatic failover for high availability. Despite my uncertainty, I managed to pass!
upvoted 0 times
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Youlanda

4 months ago
Just passed the Azure Cosmos DB exam! Thanks Pass4Success for the spot-on practice questions. Saved me loads of time.
upvoted 0 times
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Zachary

5 months ago
Passing the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB exam was a great achievement for me, and I owe a big thanks to Pass4Success for their helpful practice questions. The topic of enabling offline development by using the Azure Cosmos DB emulator was crucial for my exam preparation. One question that I recall from the exam was about setting up and using the Azure Cosmos DB emulator for offline development. Despite some initial confusion, I managed to pass the exam successfully.
upvoted 0 times
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Leota

6 months ago
The exam experience was challenging but rewarding. I'm grateful for the comprehensive preparation materials from Pass4Success that helped me pass in a short time.
upvoted 0 times
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Maurine

6 months ago
My exam experience for the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB was successful, thanks to Pass4Success practice questions. I found the topic of implementing data access by using the Azure Cosmos DB SQL language to be particularly challenging. One question that I remember from the exam was about optimizing data access performance using the SQL language in Azure Cosmos DB. Despite some uncertainty, I was able to pass the exam.
upvoted 0 times
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Aracelis

7 months ago
Just passed the Azure Cosmos DB exam! Watch out for questions on multi-region write replication - they test your understanding of conflict resolution strategies. Brush up on choosing between strong and eventual consistency models. Big thanks to Pass4Success for their spot-on practice questions that helped me prepare quickly!
upvoted 0 times
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Kattie

7 months ago
The exam covered various consistency levels in Cosmos DB. Be prepared for scenarios where you need to select the appropriate consistency level based on application requirements. Understanding trade-offs between consistency and performance is crucial.
upvoted 0 times
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Teddy

7 months ago
I recently passed the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB exam with the help of Pass4Success practice questions. The exam covered topics such as designing partitioning for workloads that require multiple partition keys. One question that stood out to me was related to designing a partitioning strategy for a scenario where multiple partition keys were needed. I wasn't completely sure of the answer, but I managed to pass the exam.
upvoted 0 times
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Free Microsoft DP-420 Exam Actual Questions

Note: Premium Questions for DP-420 were last updated On Jan. 05, 2025 (see below)

Question #1

You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account named account1.

Backups for account1 have the following configurations:

* Interval: 2 hours

* Retention period: 4 days

You need to estimate the charges associated with the retention of the backups. How many copies of the backups will incur additional charges?

Reveal Solution Hide Solution
Correct Answer: C

Question #2

You have an Azure subscription.

You plan to create an Azure Cosmos DB for NoSQL database named DB1 that will store author and book data for authors that have each published up to ten books. Typical and frequent queries of the data will include:

* All books written by an individual author

* The synopsis of individual books

You need to recommend a data model for DB1. The solution must meet the following requirements:

* Support transactional updates of the author and book data.

* Minimize read operation costs.

What should you recommend?

Reveal Solution Hide Solution
Correct Answer: D

Question #3

You have an Azure Cosmos DB for NoSQL account.

The change feed is enabled on a container named invoice.

You create an Azure function that has a trigger on the change feed.

What is received by the Azure function?

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Correct Answer: D

According to the Azure Cosmos DB documentation12, the change feed is a persistent record of changes to a container in the order they occur. The change feed outputs the sorted list of documents that were changed in the order in which they were modified.

The Azure function that has a trigger on the change feed receivesall the properties of the updated items2. The change feed does not include the original items or only the changed properties.The change feed also includes some system-defined properties such as _ts (the last modified timestamp) and _lsn (the logical sequence number)3.

Therefore, the correct answer is:


Question #4

You have an Azure Cosmos DB for NoSQL account1 that is configured for automatic failover. The account1 account has a single read-write region in West US and a and a read region in East US.

You run the following PowerShell command.

What is the effect of running the command?

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Correct Answer: B

You can use the Set-AzCosmosDBAccountRegion cmdlet to update the regions that an Azure Cosmos DB account uses. You can use this cmdlet to add a region or change the region failover order.The cmdlet requires a resource group name, an Azure Cosmos DB account name, and a list of regions in desired failover order1.

For your scenario, based on the PowerShell command, you are using the Set-AzCosmosDBAccountRegion cmdlet to update the regions for an Azure Cosmos DB account named account1 that is configured for automatic failover. The command specifies two regions: West US and East US. The effect of running the command is thatthe account will be configured for multi-region writes.

Multi-region writes is a feature of Azure Cosmos DB that allows you to write data to any region in your account and have it automatically replicated to all other regions. This feature provides high availability and low latency for write operations across multiple regions.To enable multi-region writes, you need to specify at least two regions in your account and set them as write regions2. In your command, you are setting both West US and East US as write regions by using the -IsZoneRedundant parameter with a value of $true for both regions.


Question #5

You have a container m an Azure Cosmos DB for NoSQL account. The container stores data about families. Data about parents, children, and pets are stored as separate documents.

Each document contains the address of each family. Members of the same family share the same partition key named family Id

You need to update the address for each member of the same family that share the same address. The solution must meet the following requirements:

* Be atomic consistent isolated, and durable (ACID).

* Provide the lowest latency.

What should you do?

Reveal Solution Hide Solution
Correct Answer: A

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