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Microsoft DP-420 Exam Syllabus Topics:

SectionObjectives
Topic 1: Design and implement data distribution- Partitioning and scaling
  • 1. Logical and physical partitions
    • 2. Throughput (RU/s) planning
      - Replication and consistency
      • 1. Consistency levels
        • 2. Multi-region replication
          Topic 2: Optimize and maintain Cosmos DB solutions- Monitoring and troubleshooting
          • 1. Diagnostics and logging
            • 2. Alerts and metrics
              - Performance optimization
              • 1. RU consumption optimization
                • 2. Query performance tuning
                  Topic 3: Design and implement data models for Azure Cosmos DB- Model data for NoSQL workloads
                  • 1. Data modeling patterns (embed vs reference)
                    • 2. Partitioning strategies
                      - Design indexing strategies
                      • 1. Indexing policies
                        • 2. Query optimization considerations
                          Topic 4: Integrate Azure Cosmos DB with Azure services- Event-driven architectures
                          • 1. Change Feed processing
                            • 2. Integration with Azure Functions
                              - Data pipelines and analytics
                              • 1. Synapse integration
                                • 2. Data movement patterns

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                                  Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q188-Q193):

                                  NEW QUESTION # 188
                                  You plan to deploy two Azure Cosmos DB Core (SQL) API accounts that will each contain a single database. The accounts will be configured as shown in the following table.

                                  How should you provision the containers within each account to minimize costs? To answer, select the appropriate options in the answer area.
                                  NOTE: Each correct selection is worth one point.

                                  Answer:

                                  Explanation:

                                  Reference:
                                  https://docs.microsoft.com/en-us/azure/cosmos-db/serverless
                                  https://docs.microsoft.com/en-us/azure/cosmos-db/provision-throughput-autoscale#use-cases-of-autoscale


                                  NEW QUESTION # 189
                                  You have an Azure Cosmos DB for NoSQL container.
                                  All queries to the container use the Bounded Stateness consistency level.
                                  You discover that when many queries are executed against the container, an HTTP 429 error is returned.
                                  What are two ways to reduce the number of HTTP 429 errors? Each correct answer presents a complete solution.
                                  NOTE Each correct selection is worth one point.

                                  Answer: C,E


                                  NEW QUESTION # 190
                                  You are developing an application that will connect to an Azure Cosmos DB for NoSQL account. The account has a single readme region and one agonal read region. The regions are configured for automatic failover.
                                  The account has the following connect strings. (Line numbers are included for reference only.)

                                  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:

                                  Explanation:
                                  If the primary write region fails, applications that write to the database must use a different connection string to continue to use the service. = NO You do not need to use a different connection string to continue to use the service if the primary write region fails. This is because Azure Cosmos DB supports automatic failover, which means that it will automatically switch the primary write region to another region in case of a regional outage2. The application does not need to change the connection string or specify the failover priority3. The connection string contains a list of all the regions associated with your account, and Azure Cosmos DB will route the requests to the appropriate region based on the availability and latency1.
                                  The primary Read-Only SQL Connection String and the Secondary Read-Only SQL Connection String will connect to different regions from an application running in the East US Azure region = Yes The primary read-only SQL connection string and the secondary read-only SQL connection string will connect to different regions from an application running in the East US Azure region. This is because the primary read-only SQL connection string contains the endpoint for the East US region, which is the same as the primary write region. The secondary read-only SQL connection string contains the endpoint for the West US region, which is the additional read region. Therefore, if an application running in the East US Azure region uses these connection strings, it will connect to different regions depending on which one it chooses.
                                  Applications can choose from which region by setting the PreferredLocations property within their connection properties = Yes Applications can choose from which region by setting the PreferredLocations property within their connection properties. This property allows you to specify a list of regions that you prefer to read from based on their proximity to your application2. Azure Cosmos DB will route the requests to the appropriate region based on the availability and latency1. You can also set the ApplicationRegionproperty to the region where your application is deployed, and Azure Cosmos DB will automatically populate the PreferredLocations property based on the geo-proximity from that location1.


                                  NEW QUESTION # 191
                                  You have an Azure Cosmos DB for NoSQL account that has multiple write regions.
                                  You need to receive an alert when requests that target the database exceed the available request units per second (RU/s).
                                  Which Azure Monitor signal should you use?

                                  Answer: A


                                  NEW QUESTION # 192
                                  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.

                                  Answer:

                                  Explanation:

                                  Explanation
                                  Migrate
                                  40000
                                  According to the Azure CLI reference , you need to use the az cosmosdb sql database throughput migrate command to migrate the throughput of the SQL database between autoscale and manually provisioned. You also need to use the --throughput-type parameter to specify the type of throughput to migrate to, and the --max-throughput parameter to specify the maximum throughput resource can scale to (RU/s).
                                  To complete the CLI statements, you should replace the missing values with:
                                  --throughput-type autoscale
                                  --max-throughput 40000
                                  The final command should look like this:
                                  az cosmosdb sql database throughput migrate \
                                  --account-name account1 \
                                  --name db1 \
                                  --resource-group rg1 \
                                  --throughput-type autoscale \
                                  --max-throughput 40000


                                  NEW QUESTION # 193
                                  ......

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