Most Recent Microsoft DP-420 Exam Dumps

Prepare for the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Microsoft DP-420 exam and achieve success.

The questions for DP-420 were last updated on Mar 29, 2025.

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Question No. 1

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have an Azure Cosmos DB Core (SQL) API account named account 1 that uses autoscale throughput.

You need to run an Azure function when the normalized request units per second for a container in account1 exceeds a specific value.

Solution: You configure the function to have an Azure CosmosDB trigger.

Does this meet the goal?

AYes

BNo

Show Answer

Correct Answer: B

Instead configure an Azure Monitor alert to trigger the function.

You can set up alerts from the Azure Cosmos DB pane or the Azure Monitor service in the Azure portal.

Question No. 2

You have a container in an Azure Cosmos DB for NoSQL account.

You need to create an alert based on a custom Log Analytics query.

Which signal type should you use?

AMetrics

BLog

CActivity Log

DResource Health

Show Answer

Correct Answer: B

Question No. 3

You have a container in an Azure Cosmos DB for NoSQL account that stores data about orders.

The following is a sample of an order document.

Documents are up to 2 KB.

You plan to receive one million orders daily.

Customers will frequently view their past order history.

You are the evaluating whether to use order-Date as the partition key.

What are two effects of using order-Date as the partition key? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

AYou will exceed the maximum number of partition key values.

BYou will exceed the maximum storage per partition.

CThere will always be a hot partition.

DQueries will run cross-partition.

Show Answer

Correct Answer: C, D

Question No. 4

You plan to store order data in Azure Cosmos DB for NoSQL account. The data contains information about orders and their associated items.

You need to develop a model that supports order read operations. The solution must minimize the number or requests.

ACreate a single database that contains one container. Store orders and order items in separate documents in the container.

BCreate a single database that contains one container. Create a separate document for each order and embed the order items into the order documents.

CCreate a database for orders and a database for order items.

DCreate a single database that contains a container for order and a container for order items.

Show Answer

Correct Answer: B

Azure Cosmos DB is a multi-model database that supports various data models, such as documents, key-value, graph, and column-family3.The core content-model of Cosmos DB's database engine is based on atom-record-sequence (ARS), which allows it to store and query different types of data in a flexible and efficient way3.

To develop a model that supports order read operations and minimizes the number of requests, you should consider the following factors:

The size and shape of your data

The frequency and complexity of your queries

The latency and throughput requirements of your application

The trade-offs between storage efficiency and query performance

Based on these factors, one possible model that you could implement isB. Create a single database that contains one container. Create a separate document for each order and embed the order items into the order documents.

This model has the following advantages:

It stores orders and order items as self-contained documents that can be easily retrieved by order ID1.

It avoids storing redundant data or creating additional containers for order items1.

It allows you to view the order history of a customer with simple queries1.

It leverages the benefits of embedding data, such as reducing the number of requests, improving query performance, and simplifying data consistency2.

This model also has some limitations, such as:

It may not be suitable for some order items that have data that is greater than 2 KB, as it could exceed the maximum document size limit of 2 MB2.

It may not be optimal for scenarios where order items need to be queried independently from orders or aggregated by other criteria2.

It may not support transactions across multiple orders or customers, as transactions are scoped to a single logical partition2.

Depending on your specific use case and requirements, you may need to adjust this model or choose a different one.For example, you could use a hybrid data model that combines embedding and referencing data2, or you could use a graph data model that expresses entities and relationships as vertices and edges.

Question No. 5

You have a container named container! in an Azure Cosmos DB for NoSQL account.

You need to provide a user named User1 with the ability to insert items into container1 by using role-based access The solution must use the principle of least privilege.

Which roles should you assign to User1?

ACosmos DB Built-in Data Contributor only

BCosmos DB Operator only

CDocumentDB Account Contribute only

DDocumentDB Account Contributor and Cosmos DB Built-in Data Contributor

Show Answer

Correct Answer: A

The Cosmos DB Built-in DataContributor roleprovides the necessary permissions to insert items into a container in an Azure Cosmos DB for NoSQL account. This role grants theminimum required privilegesfor the described task, adhering to the principle of least privilege.

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