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DP-200 Implementing an Azure Data Solution 193Q nityte

Implement data storage solutions Question Set 1 QUESTION 1 You are a data engineer implementing a lambda architecture on Microsoft Azure. You use an open-source big data solution to collect, process, and maintain data. The analytical data store performs poorly. You must implement a solution that meets the following requirements: Provide data warehousing Reduce ongoing management activities Deliver SQL query responses in less than one second You need to create an HDInsight cluster to meet the requirements. Which type of cluster should you create? A. Interactive Query B. Apache Hadoop C. Apache HBase D. Apache Spark Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: Lambda Architecture with Azure: Azure offers you a combination of following technologies to accelerate real-time big data analytics: 1. Azure Cosmos DB, a globally distributed and multi-model database service. 2. Apache Spark for Azure HDInsight, a processing framework that runs large-scale data analytics applications. 3. Azure Cosmos DB change feed, which streams new data to the batch layer for HDInsight to process. 4. The Spark to Azure Cosmos DB Connector Note: Lambda architecture is a data-processing architecture designed to handle massive quantities of data by taking advantage of both batch processing and stream processing methods, and minimizing the latency 909A545160E581887343EF295A26525D nityte

involved in querying big data. References: https://sqlwithmanoj.com/2018/02/16/what-is-lambda-architecture-and-what-azure-offers-with-its-new- cosmos-db/ QUESTION 2 DRAG DROP You develop data engineering solutions for a company. You must migrate data from Microsoft Azure Blob storage to an Azure SQL Data Warehouse for further transformation. You need to implement the solution. Which four 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. Select and Place: Correct Answer: Section: (none) Explanation Explanation/Reference: Explanation: Step 1: Provision an Azure SQL Data Warehouse instance. Create a data warehouse in the Azure portal. 909A545160E581887343EF295A26525D nityte

Step 2: Connect to the Azure SQL Data warehouse by using SQL Server Management Studio Connect to the data warehouse with SSMS (SQL Server Management Studio) Step 3: Build external tables by using the SQL Server Management Studio Create external tables for data in Azure blob storage. You are ready to begin the process of loading data into your new data warehouse. You use external tables to load data from the Azure storage blob. Step 4: Run Transact-SQL statements to load data. You can use the CREATE TABLE AS SELECT (CTAS) T-SQL statement to load the data from Azure Storage Blob into new tables in your data warehouse. References: https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/sql-data-warehouse/load-data-from- azure-blob-storage-using-polybase.md QUESTION 3 You develop data engineering solutions for a company. The company has on-premises Microsoft SQL Server databases at multiple locations. The company must integrate data with Microsoft Power BI and Microsoft Azure Logic Apps. The solution must avoid single points of failure during connection and transfer to the cloud. The solution must also minimize latency. You need to secure the transfer of data between on-premises databases and Microsoft Azure. What should you do? A. B. C. D. Install a standalone on-premises Azure data gateway at each location Install an on-premises data gateway in personal mode at each location Install an Azure on-premises data gateway at the primary location Install an Azure on-premises data gateway as a cluster at each location Correct Answer: D Section: (none) Explanation Explanation/Reference: Explanation: You can create high availability clusters of On-premises data gateway installations, to ensure your organization can access on-premises data resources used in Power BI reports and dashboards. Such clusters allow gateway administrators to group gateways to avoid single points of failure in accessing on- premises data resources. The Power BI service always uses the primary gateway in the cluster, unless it’s not available. In that case, the service switches to the next gateway in the cluster, and so on. References: https://docs.microsoft.com/en-us/power-bi/service-gateway-high-availability-clusters QUESTION 4 You are a data architect. The data engineering team needs to configure a synchronization of data between an on-premises Microsoft SQL Server database to Azure SQL Database. Ad-hoc and reporting queries are being overutilized the on-premises production instance. The synchronization process must: Perform an initial data synchronization to Azure SQL Database with minimal downtime Perform bi-directional data synchronization after initial synchronization You need to implement this synchronization solution. Which synchronization method should you use? 909A545160E581887343EF295A26525D nityte

transactional replication A. B. Data Migration Assistant (DMA) C. backup and restore D. SQL Server Agent job E. Azure SQL Data Sync Correct Answer: E Section: (none) Explanation Explanation/Reference: Explanation: SQL Data Sync is a service built on Azure SQL Database that lets you synchronize the data you select bi- directionally across multiple SQL databases and SQL Server instances. With Data Sync, you can keep data synchronized between your on-premises databases and Azure SQL databases to enable hybrid applications. Compare Data Sync with Transactional Replication References: https://docs.microsoft.com/en-us/azure/sql-database/sql-database-sync-data QUESTION 5 An application will use Microsoft Azure Cosmos DB as its data solution. The application will use the Cassandra API to support a column-based database type that uses containers to store items. You need to provision Azure Cosmos DB. Which container name and item name should you use? Each correct answer presents part of the solutions. NOTE: Each correct answer selection is worth one point. A. collection B. rows C. graph D. entities E. table Correct Answer: BE Section: (none) Explanation Explanation/Reference: Explanation: B: Depending on the choice of the API, an Azure Cosmos item can represent either a document in a collection, a row in a table or a node/edge in a graph. The following table shows the mapping between API-specific entities to an Azure Cosmos item: 909A545160E581887343EF295A26525D nityte

E: An Azure Cosmos container is specialized into API-specific entities as follows: References: https://docs.microsoft.com/en-us/azure/cosmos-db/databases-containers-items QUESTION 6 A company has a SaaS solution that uses Azure SQL Database with elastic pools. The solution contains a dedicated database for each customer organization. Customer organizations have peak usage at different periods during the year. You need to implement the Azure SQL Database elastic pool to minimize cost. Which option or options should you configure? A. Number of transactions only B. eDTUs per database only C. Number of databases only D. CPU usage only E. eDTUs and max data size Correct Answer: E Section: (none) Explanation Explanation/Reference: Explanation: The best size for a pool depends on the aggregate resources needed for all databases in the pool. This involves determining the following: Maximum resources utilized by all databases in the pool (either maximum DTUs or maximum vCores depending on your choice of resourcing model). Maximum storage bytes utilized by all databases in the pool. Note: Elastic pools enable the developer to purchase resources for a pool shared by multiple databases to accommodate unpredictable periods of usage by individual databases. You can configure resources for the pool based either on the DTU-based purchasing model or the vCore-based purchasing model. References: https://docs.microsoft.com/en-us/azure/sql-database/sql-database-elastic-pool QUESTION 7 HOTSPOT You are a data engineer. You are designing a Hadoop Distributed File System (HDFS) architecture. You plan to use Microsoft Azure Data Lake as a data storage repository. You must provision the repository with a resilient data schema. You need to ensure the resiliency of the Azure Data Lake Storage. What should you use? To answer, select the appropriate options in the answer 909A545160E581887343EF295A26525D nityte

area. NOTE: Each correct selection is worth one point. Hot Area: Correct Answer: Section: (none) Explanation Explanation/Reference: Explanation: Box 1: NameNode An HDFS cluster consists of a single NameNode, a master server that manages the file system namespace and regulates access to files by clients. 909A545160E581887343EF295A26525D nityte

Box 2: DataNode The DataNodes are responsible for serving read and write requests from the file system’s clients. Box 3: DataNode The DataNodes perform block creation, deletion, and replication upon instruction from the NameNode. Note: HDFS has a master/slave architecture. An HDFS cluster consists of a single NameNode, a master server that manages the file system namespace and regulates access to files by clients. In addition, there are a number of DataNodes, usually one per node in the cluster, which manage storage attached to the nodes that they run on. HDFS exposes a file system namespace and allows user data to be stored in files. Internally, a file is split into one or more blocks and these blocks are stored in a set of DataNodes. The NameNode executes file system namespace operations like opening, closing, and renaming files and directories. It also determines the mapping of blocks to DataNodes. The DataNodes are responsible for serving read and write requests from the file system’s clients. The DataNodes also perform block creation, deletion, and replication upon instruction from the NameNode. References: https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html#NameNode+and+DataNodes QUESTION 8 DRAG DROP You are developing the data platform for a global retail company. The company operates during normal working hours in each region. The analytical database is used once a week for building sales projections. Each region maintains its own private virtual network. Building the sales projections is very resource intensive are generates upwards of 20 terabytes (TB) of data. Microsoft Azure SQL Databases must be provisioned. Database provisioning must maximize performance and minimize cost The daily sales for each region must be stored in an Azure SQL Database instance Once a day, the data for all regions must be loaded in an analytical Azure SQL Database instance You need to provision Azure SQL database instances. How should you provision the database instances? To answer, drag the appropriate Azure SQL products to the correct databases. Each Azure SQL product may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point. Select and Place: Correct Answer: 909A545160E581887343EF295A26525D nityte

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