DP-420 Test Preparation & DP-420 Exam Questions & DP-420 Test Prep

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Microsoft DP-420 Exam Syllabus Topics:

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

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Verified and Updated Microsoft DP-420 Exam Questions & Answers

This professionally designed desktop practice exam software is customizable, which helps you to adjust timings and questions of the mock tests. This feature of Windows-based Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB software helps you improve time-management abilities and weak areas of the test preparation. We regularly upgrade this Microsoft DP-420 Practice Exam software after receiving valuable feedback from experts worldwide.

Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q154-Q159):

NEW QUESTION # 154
You have an Azure Cosmos DB for NoSQL container. The container contains items that have the following properties.

You need to protect the data stored in the container by using Always Encrypted. For each property, you must use the strongest type of encryption and ensure that queries execute properly.
What is the strongest type of encryption that you can apply to each property? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:
Box 1 =Randomized
Box 2 = Deterministic
Always Encrypted for Azure Cosmos DB supports two types of encryption: deterministic and randomized1.
Deterministic encryption always produces the same encrypted value for any given plain text value.
Randomized encryption produces a different encrypted value for the same plain text value.
For dateOfBirth, randomized encryption is the strongest type of encryption because it provides better protection against statistical analysis and brute-force attacks. Deterministic encryption would not be suitable for dateOfBirth because it could reveal patterns or allow equality comparisons1.
For healthStatus, deterministic encryption is the strongest type of encryption because it allows queries to perform equality comparisons and filters on the encrypted property. Randomized encryption would not be suitable for healthStatus because it would prevent any queries on the encrypted property1.


NEW QUESTION # 155
You are designing an Azure Cosmos DB Core (SQL) API solution to store data from IoT devices. Writes from the devices will be occur every second.
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?

Answer: A

Explanation:
Explanation
Use a partition key with a random suffix. Distribute the workload more evenly is to append a random number at the end of the partition key value. When you distribute items in this way, you can perform parallel write operations across partitions.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/synthetic-partition-keys


NEW QUESTION # 156
You have an application named App1 that reads the data in an Azure Cosmos DB Core (SQL) API account.
App1 runs the same read queries every minute. The default consistency level for the account is set to eventual.
You discover that every query consumes request units (RUs) instead of using the cache.
You verify the IntegratedCacheiteItemHitRate metric and the IntegratedCacheQueryHitRate metric. Both metrics have values of 0.
You verify that the dedicated gateway cluster is provisioned and used in the connection string.
You need to ensure that App1 uses the Azure Cosmos DB integrated cache.
What should you configure?

Answer: A

Explanation:
Because the integrated cache is specific to your Azure Cosmos DB account and requires significant CPU and memory, it requires a dedicated gateway node. Connect to Azure Cosmos DB using gateway mode.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/integrated-cache-faq


NEW QUESTION # 157
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
The following is a sample of a document in container1.
{
"studentId": "631282",
"firstName": "James",
"lastName": "Smith",
"enrollmentYear": 1990,
"isActivelyEnrolled": true,
"address": {
"street": "",
"city": "",
"stateProvince": "",
"postal": "",
}
}
The container1 container has the following indexing policy.
{
"indexingMode": "consistent",
"includePaths": [
{
"path": "/*"
},
{
"path": "/address/city/?"
}
],
"excludePaths": [
{
"path": "/address/*"
},
{
"path": "/firstName/?"
}
]
}
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:


NEW QUESTION # 158
Drag and Drop Question
You have an Azure Synapse Analytics workspace named workspace1 that contains a serverless SQL pool.
You have an Azure Table Storage account that stores operational data.
You need to replace the Table storage account with Azure Cosmos DB for NoSQL. The solution must meet the following requirements:
- Support queries from the serverless SQL pool.
- Only pay for analytical compute when running queries.
- Ensure that analytical processes do NOT affect operational processes.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:

Explanation:
Step 1: Create an Azure Cosmos DB core (SQL) API account
Step 2: Enable Azure Synapse Link
Synapse Link creates a tight seamless integration between Azure Cosmos DB and Azure Synapse Analytics.
Serverless SQL pool allows you to query and analyze data in your Azure Cosmos DB containers that are enabled with Azure Synapse Link. You can analyze data in near real-time without impacting the performance of your transactional workloads.
Step 3: Create a database and a container that has Analytical store enabled Create an analytical store enabled container Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/configure-synapse-link


NEW QUESTION # 159
......

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