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DP-420 exam dumps

Microsoft DP-420 Value Package

(Include: PDF + Desktop Test Engine + Online Test Engine)

  • Exam Code: DP-420
  • Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
  • No. of Questions: 281 Questions and Answers
  • Updated: Oct 17, 2026

One bank, three ways to study. The DP-420 materials at Actual4Labs come as a printable PDF for easy note-taking, a Windows PC test engine that simulates the real exam environment, and an online engine that runs on any electronic device — all covering the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB objectives.

Microsoft DP-420 Exam Syllabus Topics:

SectionWeightObjectives
Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Select index types and paths
  • 2. Exclude or include properties
- Optimize query performance
  • 1. Tune query structure and syntax
  • 2. Optimize throughput allocation
- Work with change feed
  • 1. Process changes incrementally
  • 2. Trigger downstream workflows
Integrate an Azure Cosmos DB solution5-10%- Integrate with Azure services
  • 1. Use with Azure Functions, Logic Apps, Event Hubs
  • 2. Connect to Azure Stream Analytics
- Enable analytical workloads
  • 1. Configure analytical store
  • 2. Use Synapse Link
Maintain an Azure Cosmos DB solution25-30%- Monitor and troubleshoot
  • 1. Analyze metrics and logs
  • 2. Use Azure Monitor and Application Insights
- Implement security
  • 1. Encrypt data at rest and in transit
  • 2. Manage authentication and authorization
- Manage data movement
  • 1. Migrate between APIs or regions
  • 2. Import/export data
- DevOps and automation
  • 1. Automate operations
  • 2. Deploy via ARM, Bicep, CLI
- Implement backup and restore
  • 1. Configure periodic backup
  • 2. Perform point-in-time restore
Design and implement data models35-40%- Design partitioning strategy
  • 1. Choose partition key based on workload
  • 2. Plan for distribution and throughput
- Design and implement non-relational data models
  • 1. Define primary and unique keys
  • 2. Embed related entities in documents
  • 3. Identify data and access patterns
  • 4. Denormalize data across documents
  • 5. Configure time-to-live (TTL)
  • 6. Store multiple entity types in one container
  • 7. Reference between documents
- Plan sizing and scaling
  • 1. Select consistency levels
  • 2. Provision throughput and storage
- Implement connectivity and data access
  • 1. Use SDKs to connect and operate
  • 2. Write efficient SQL queries
Design and implement data distribution5-10%- Manage data distribution and failover
  • 1. Manage regional availability
  • 2. Define failover priorities
- Design replication strategy
  • 1. Implement multi-region write
  • 2. Configure multi-region replication

Know the DP-420 Exam — and Know Your Options

You do not need to buy review material twice. If you fail the corresponding exam within 60 days of purchase, send us a scanned copy of your enrollment slip and your official Score Report PDF within two days of the exam date, and we will process a full refund within seven days of verification. Exclusions: exams taken within three days of purchase, candidate names that do not match the payer, and free or expired products. If you would rather switch tracks, we will exchange your product for two others of equal value at no cost.

The Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB blueprint centers on these domains:

  • Design and implement data models (35-40%)
  • Optimize an Azure Cosmos DB solution (15-20%)
  • Maintain an Azure Cosmos DB solution (25-30%)

Additional domains complete the official outline, and our bank covers every one.

Registration goes through the official channels below:

Pick a test center or online session that fits your calendar, and book early for the widest choice of dates.

By daily checking and automatic delivery. Our Microsoft experts check for updates every day, and whenever the DP-420 bank is revised, the system sends the latest version to you automatically — free for 365 days from purchase. The bank stays closely linked to the actual exam content, with expert-verified answers throughout. Choose among three formats: a printable PDF for easy notes, a Windows PC test engine that simulates the real exam environment, and an online engine that runs on any device and works offline after the first download. A free demo lets you experience all of it before buying.

Instantly. Upon successful payment, our system sends the product file to your mailbox automatically — typically within about a minute — alongside an immediate download link. If nothing arrives within two hours, check your spam folder and contact our 24/7 support team. Installations are unlimited, and updates are free for 365 days: each new version is delivered to you automatically, followed by a 50% renewal discount when the period ends.

Currently, the DP-420 exam's passing score is 700 and the registration fee is $165 USD. These figures belong to Microsoft and can be revised, so confirm them on the official site before scheduling.

Microsoft states the following prerequisites for the Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB: No mandatory prerequisites; recommended experience: developing Azure applications, working with NoSQL databases, proficiency in C#/Java/JavaScript/Python, familiarity with Azure management.

For the authoritative details, see the official certification page.

Microsoft recommends these official training resources:

Pair the course that fits your background with consistent question practice for the best results.

According to the latest exam information, the DP-420 exam contains 40-60 questions and lasts 120 minutes minutes. Simulating those conditions at home with the PC test engine is excellent preparation for the real environment.

Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions:

You are designing an Azure Cosmos DB for NoSQL solution to store data from IoT devices.
Writes from the devices will occur every second. Data will be retained indefinitely.
The following is a sample of the data.

You need to select a partition key that meets the following requirements for writes:
- Minimizes the partition skew
- Avoids capacity limits
- Avoids hot partitions
What should you do?

  • A. Use sensor1Value as the partition key.
  • B. Use timestamp as the partition key.
  • C. Create a new synthetic key that contains deviceId and timestamp.
  • D. Create a new synthetic key that contains deviceId and deviceManufacturer.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

Hotspot Question
You have an Azure Cosmos DB for NoSQL database that hosts a container named Container1.
You are evaluating whether to implement Always Encrypted for Container1.
How will the JSON components of the data in Container1 be affected by implementing Always Encrypted? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Reveal Solution  Discussion  0

Correct Answer:

You have an Azure Cosmos DB for NoSQL account that uses a custom conflict resolution policy.
The account has a registered merge procedure that throws a runtime exception. The runtime exception prevents conflicts from being resolved.
You need to use an Azure function to resolve the conflicts.
What should you use?

  • A. a function that receives items pushed from the conflicts feed and is triggered by an Azure Cosmos DB trigger
  • B. a function that pulls items from the change feed and is triggered by a timer trigger
  • C. a function that pulls items from the conflicts feed and is triggered by a timer trigger
  • D. a function that receives items pushed from the change feed and is triggered by an Azure Cosmos DB trigger
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

Hotspot Question
You have a database named db1 in an Azure Cosmos DB for NoSQL account named account1.
The db1 database has a manual throughput of 4,000 request units per second (RU/s).
You need to move db1 from manual throughput to autoscale throughput by using the Azure CLI.
The solution must provide a minimum of 4,000 RU/s and a maximum of 40,000 RU/s.
How should you complete the CLI statements? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Reveal Solution  Discussion  0

Correct Answer:


Explanation:
Box 1: migrate
The az cosmosdb sql database throughput migrate command migrates the throughput of the SQL database between autoscale and manually provisioned.
Syntax: az cosmosdb sql database throughput migrate
--account-name
--name
--resource-group
--throughput-type {autoscale, manual}
Box 2: update
The az cosmosdb sql database throughput update command updates the throughput of the SQL database under an Azure Cosmos DB account.
Syntax: az cosmosdb sql database throughput update
--account-name
--name
--resource-group
[--max-throughput]
[--throughput]
Box 3: 4000
Specify the throughput.
Parameter --throughput -
The throughput of SQL database (RU/s).
Note: Example migration from standard (manual) provisioned throughput to autoscale: Suppose you have a container with 10,000 RU/s manual provisioned throughput, and 25 GB of storage.
When you enable autoscale, the initial autoscale max RU/s will be: 10,000 RU/s, which will scale between 1000 - 10,000 RU/s.
Note 2: Parameter --max-throughput
The maximum throughput resource can scale to (RU/s). Provided when the resource is autoscale enabled. The minimum value can be 4000 (RU/s).
Reference:
https://docs.microsoft.com/en-us/cli/azure/cosmosdb/sql/database/throughput

You need to create a .NET console app to manage data in the Azure Cosmos DB SQL API account. As a part of the procedure, you need to create a database. Which of the following method can you use to create a database?

  • A. BuildDatabaseAsync
  • B. CreateDatabaseAsync
  • C. CreateCosmosDatabase
  • D. CreateContainerAsync
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for Actual4Labs members. You can sign-up / login (it's free).

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