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

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The DP-420 practice test trains you in implementing cloud-native applications that store and manage data in Microsoft Azure Cosmos DB.

Why should I take the DP-420 exam?

The DP-420 certification offers developers the perfect opportunity to validate their skills and subject matter expertise in designing, implementing, and monitoring cloud-native applications that store and manage data in Microsoft Azure Cosmos DB. The candidate looking to certify themselves with the DP-420 certification will be tested in designing and implementing data models and data distribution, and integrating, optimizing, and maintaining an Azure Cosmos DB solution. If you manage to pass the DP-420 certification exam you will achieve the Azure Cosmos DB Developer Specialty certification. The DP-420 practice test includes two different modes: certification and practice mode. Certification mode allows you to assess your knowledge and discover your weak areas, with practice mode allowing you to focus on the areas that need development.

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What is a Practice Test

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Questions: 120
Release Date: 06/2022
Job Role: Developer
Language: English

The DP-420 practice test contains 120 questions and covers the following objectives:

Design and Implement Data Models –53 questions

Design and implement a non-relational data model for Azure Cosmos DB Core API

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 primary and unique keys
Identify data and associated access patterns
Specify a default TTL on a container for a transactional store

Design a data partitioning strategy for Azure Cosmos DB Core API

Choose a partition 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 partitioning for workloads that require multiple partition keys

Plan 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 and provisioned models
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
Configure throughput for Azure Cosmos DB by using the Azure porta

Implement client connectivity options in the Azure Cosmos DB SDK

Choose a connectivity mode (gateway versus direct)
Implement a connectivity mode
Create a connection to a database
Enable offline development by using the Azure Cosmos DB emulator
Handle connection errors
Implement a singleton for the client
Specify a region for global distribution
Configure client-side threading and parallelism options
Enable SDK logging

Implement data access by using the Azure Cosmos DB SQL language

Implement queries that use arrays, nested objects, aggregation, and ordering
Implement a correlated subquery
Implement queries that use array and type-checking functions
Implement queries that use mathematical, string, and date functions
Implement queries based on variable data

Implement data access by using SQL API SDKs

Choose when to use a point operation versus a query operation
Implement a point operation that creates, updates, and deletes documents
Implement an update by using a patch operation
Manage multi-document transactions using SDK Transactional Batch
Perform a multi-document load using SDK Bulk
Implement optimistic concurrency control using ETags
Implement session consistency by using session tokens
Implement a query operation that includes pagination
Implement a query operation by using a continuation token
Handle transient errors and 429s
Specify TTL for a document
Retrieve and use query metrics

Implement server-side programming in Azure Cosmos DB Core API by using JavaScript

Write, deploy, and call a stored procedure
Design stored procedures to work with multiple items transactionally
Implement triggers
Implement a user-defined function

Design and Implement Data Distribution –7 questions

Design 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 Core API
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 RU cost
Evaluate the impact of consistency model choices on performance and latency
Specify application connections to replicated data

Design and implement multi-region write

Choose when to use multi-region write
Implement multi-region write
Implement a custom conflict resolution policy for Azure Cosmos DB Core API

Integrate an Azure Cosmos DB Solution –6 questions

Enable Azure Cosmos DB analytical workloads

Enable Azure Synapse Link
Choose between Azure Synapse Link and 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 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 Cognitive Search for an Azure Cosmos DB solution

Optimize an Azure Cosmos DB Solution –17 questions

Optimize query performance in Azure Cosmos DB Core API

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

Design and implement change feeds for an Azure Cosmos DB Core API

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

Define and implement an indexing strategy for an Azure Cosmos DB Core API

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

Maintain an Azure Cosmos DB Solution –37 questions

Monitor and troubleshoot an Azure Cosmos DB solution

Evaluate response status code and failure metrics
Monitor metrics for normalized throughput usage 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 Cosmos DB logs
Monitor throughput across partitions
Monitor distribution of data across partitions
Monitor security by using logging and auditing

Implement backup and restore for an Azure Cosmos DB solution

Choose between periodic and continuous backup
Configure periodic backup
Configure continuous backup and recovery
Locate a recovery point for a point-in-time recovery
Recover a database or container from a recovery point

Implement 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 data plane access to Azure Cosmos DB by using keys
Manage data plane access to Azure Cosmos DB by using Azure Active Directory
Configure Cross-Origin Resource Sharing (CORS) settings
Manage account keys by using Azure Key Vault
Implement customer-managed keys for encryption
Implement Always Encrypted

Implement 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

Implement 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 (ARM templates)
Migrate between standard and autoscale throughput by using PowerShell or Azure CLI
Initiate a regional failover by using PowerShell or Azure CLI
Maintain index policies in production by using ARM templates

System Requirements

A practice test is an informal exam, simulating an actual test, which aims to prepare you for what to expect on the real exam. A MeasureUp practice test contains around 150 questions covering all exam objective domains. In a MeasureUp practice test, there are two different test-taking modes to prepare for certification: Certification Mode and Practice Mode.

Practice Mode permits users to customize their testing environment. They will be able to select the number of questions they want to include in their assessment, the maximum time to finish the test, the possibility to randomize the question order, and select how and which questions will be shown in the test.
Certification Mode simulates the actual testing environment users will encounter when taking a certification exam. They are timed and do not allow users to access the answers and explanations to questions until after the test.

How does it work?

Take a look at our video to see exactly how MeasureUp’s practice tests work.

Why should you trust MeasureUp over free Learning material?

MeasureUp	Free learning material
A greater number of questions, so more opportunities to learn.	A small proportion of questions to introduce the exam.
Detailed explanations with online references of correct and incorrect answers.	Brief or no explanations of both correct and incorrect answer options.
A total of fourteen different question types.	Limited types of questions out of all the ones you'll find on the exam.
Customize the test based on your needs. Certification & Practice Mode.	Just one type of assessment, without customization options and without a time countdown.

Will studying with a MeasureUp practice test improve my chances of passing at the first attempt?

Yes. MeasureUp's practice tests are specifically designed to help save time and pass at the first attempt. The test is fully customizable, which allows you to discover and focus on your weak areas. This makes the learning process faster and smoother. Also, as the style, objectives, question type, and difficulty are the same as those found on the official exam, you can be confident that when you pass the practice test twice in Certification Mode, you are ready to take the exam.

What can I expect to earn if I pass the DP-420 exam?

On passing the DP-420, and obtaining a job as a mid-level developer, you can expect to earn a salary in the United States of approximately $150,000.

Source: Nigel Franks International.

Continue growing with MeasureUp’s learning material. Explore the Data and AI learning path.

Fundamentals:

AI-900: Azure AI Fundamentals

DP-900: Microsoft Azure Data Fundamentals

Role-Based:

AI-102: Designing and Implementing a Microsoft Azure AI Solution

DP-100: Designing and Implementing a Data Science Solution on Azure

DP-203: Data Engineering on Microsoft Azure

DP-300: Administering Microsoft Azure SQL Solutions

DP-500: Designing and Implementing Enterprise-Scale Analytics Solutions Using Microsoft Azure and Microsoft Power BI

Specialty:

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

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DP-420 PRACTICE TEST

Why should you use our DP-420 practice test?

The MeasureUp DP-420 practice test is the most realistic simulation of the actual certification exam on the market, giving you the perfect opportunity to pass the official exam on the first go. With our Test Pass Guarantee, you can be sure of success as we offer all of your money back if you do not pass. The DP-420 practice test has been created by leading experts in the field.

Why should you trust DP-420 Practice Test from MeasureUp over free learning material?

The MeasureUp DP-420 practice test has many benefits over free learning material, including:

A greater number of questions, giving you more opportunities to learn.
Detailed explanations with online references of all answer choices.

A total of fourteen different question types, replicating the look and feel of the real exam.
Customizable based on your requirements. Certification & Practice Modes.
Test Pass Guarantee.
Written, reviewed, and edited by experts.

How to use the DP-420 Practice Test?

The DP-420 practice test can be used in two different modes: certification and practice mode. Certification mode offers you the possibility to test your knowledge and discover your weak areas, and Practice mode lets you to target these areas, allowing you to spend your time wisely. We first recommend you take the DP-420 practice test in Certification mode. By studying the generated report on completing the test, you will get a helpful breakdown of which areas need further attention. Then, you can take the test in Practice mode to develop those areas further. Once you are confident you have improved your knowledge in these areas, you can re-take the test in Certification mode and when you can pass the test twice consecutively with a score of at least 90%, you know you are exam-ready!

Will the questions be the same as the actual exam?

Although the questions will emulate those of the official exam in terms of style, content, and level of difficulty, for reasons of copyright they will not be identical. This will allow you to fully understand the content you are studying so that, no matter how the questions are focused, you can be confident you are covering the same material and that you will have no problem in passing the exam.

DP-420 CERTIFICATION EXAM

What is the Azure DP-420?

The DP-420 certification exam tests your ability to implement cloud-native applications that store and manage data in Microsoft Azure Cosmos DB.

How difficult is the Azure DP-420??

The DP-420 Azure Cosmos DB Developer Specialty certification exam requires subject matter expertise in designing, implementing, and monitoring cloud-native applications that store and manage data in Microsoft Azure Cosmos DB. If you are reasonably new to working with data in Azure, we recommend you start out with the DP-900 Azure Data Fundamentals certification exam.

How can you pass the DP-420 exam?

Review the DP-420 exam domains carefully.
Create your study plan for your preparation.
Enroll for the MeasureUp practice tests. Our practice tests emulate the actual exam in terms of style, format, skill sets, question structure, and difficulty level, and can be taken in two different formats: practice mode and certification mode.

Practice, practice, practice! After looking at all the questions available in the test, checking the correct answers, reviewing the explanations regarding all the different answer options, and consulting the carefully chosen references, it is now time to use the test’s Certification Mode. This is the closest experience you’ll get to the real exam. And when you pass the Certification Mode twice consecutively with a score of 90% or more, that means you are… Exam ready!

Is the DP-420 worth it?

If your goal is to demonstrate your specific skills and knowledge with respect to implementing cloud-native applications that store and manage data in Microsoft Azure Cosmos DB, then passing the DP-420 certification exam will ensure you are ahead of your peers with certified and relevant knowledge of how to do this.

How many questions are on the DP-420 exam?

There are approximately 50-60 questions in the DP-420 exam.