[2026] Microsoft DP-420 Questions: Fosters Your Exam Passing Skills

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Microsoft DP-420 Exam Syllabus Topics:

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

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                                  Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q14-Q19):

                                  NEW QUESTION # 14
                                  You have an Azure Cosmos DB for NoSQL account.
                                  You plan 10 create a container named container1. The container1 container will store items that include two properties named nm and age The most commonly executed queries will query container1 for a specific name. The following is a sample of the query.

                                  You need to define an opt-in Indexing policy for container1. The solution must meet the following requirements:
                                  * Minimize the number of request units consumed by the queries.
                                  * Ensure that the _etag property is excluded from indexing.
                                  How should you define the indexing poky? To answer, select the appropriate options in the answer area.
                                  NOTE: Each correct selection Is worth one point.

                                  Answer:

                                  Explanation:

                                  Explanation:


                                  NEW QUESTION # 15
                                  You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account named accounts You configure account! to send resource logs to Log Analytics.
                                  You need to identify any containers in account1 that were deleted during the past 24 hours.
                                  How should you complete the query? To answer, select the appropriate options in the answer area.
                                  NOTE: Each correct selection is worth one point.

                                  Answer:

                                  Explanation:

                                  Explanation:


                                  NEW QUESTION # 16
                                  You have a database named db1 in an Azure Cosmos DB for NoSQL
                                  You are designing an application that will use dbl.
                                  In db1, you are creating a new container named coll1 that will store in coll1.
                                  The following is a sample of a document that will be stored in coll1.

                                  The application will have the following characteristics:
                                  * New orders will be created frequently by different customers.
                                  * Customers will often view their past order history.
                                  You need to select the partition key value for coll1 to support the application. The solution must minimize costs.
                                  To what should you set the partition key?

                                  Answer: C

                                  Explanation:
                                  Based on the characteristics of the application and the provided document structure, the most suitable partition key value for coll1 in the given scenario would be the customerId, Option B.
                                  The application frequently creates new orders by different customers and customers often view their past order history. Using customerId as the partition key would ensure that all orders associated with a particular customer are stored in the same partition. This enables efficient querying of past order history for a specific customer and reduces cross-partition queries, resulting in lower costs and improved performance.
                                  a partition key is a JSON property (or path) within your documents that is used by Azure Cosmos DB to distribute data among multiple partitions 3 . A partition key should have a high cardinali ty, which means it should have many distinct values, such as hundreds or thousands 1 . A partition key should also align with the most co mmon query patterns of your application, so that you can efficiently retrieve data by using the partition key value 1 .
                                  Based on these criteria, one possible partition key that you could use for coll1 is B. customerId .
                                  This partition key has the following advantages:
                                  * It has a high cardinality, as each customer will have a unique ID 3 .
                                  * It aligns with the query patterns of the application, a s customers will often view their past order history
                                  3 .
                                  * It minimizes costs, as it reduces the number of cross-partition queries and optimizes the storage and throughput utilization 1 .
                                  This partition key also has some limitations, such as:
                                  * It may not be optimal for scenarios where orders need to be queried independently from customers or aggregated by date or other criteria 3 .
                                  * It may result in hot partitions or throttling if som e customers create orders more frequently than others or have more data than others 1 .
                                  * It may not support transactions a cross multiple customers, as transactions are scoped to a single logical partition 2 .
                                  Depending on your specific use case and requirements, you may need to adjust this partition key or choose a different one. For example, you could use a synthetic partition key that conc atenates multiple properties of an item 2 , or you could use a partition key with a random or pre-calculated suffix to distribute the workload more evenly 2 .


                                  NEW QUESTION # 17
                                  You have an Azure Cosmos DB for NoSQL account named accounts1.
                                  You plan to implement the integrated cache for account1.
                                  You need to configure the connectivity mode and the consistency level for requests that target account1. The solution must maximize consistency while using the integrated cache.
                                  What should you configure? To answer, select the appropriate options in the answer area.
                                  NOTE: Each correct selection is worth one point.

                                  Answer:

                                  Explanation:

                                  Explanation:


                                  NEW QUESTION # 18
                                  Hotspot Question
                                  You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account.
                                  You define and implement an encryption policy by using the following C# code:

                                  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 # 19
                                  ......

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