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HOTSPOT You have an Azure subscription that contains an Azure Synapse Analytics dedicated SQL pool named Pool1 and an Azure Data Lake Storage account named storage1. Storage1 requires secure transfers. You need to create an external data source in Pool1 that will be used to read .orc files in storage1. How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
You have two Azure Blob Storage accounts named account1 and account2? You plan to create an Azure Data Factory pipeline that will use scheduled intervals to replicate newly created or modified blobs from account1 to account? You need to recommend a solution to implement the pipeline. The solution must meet the following requirements: * Ensure that the pipeline only copies blobs that were created of modified since the most recent replication event. * Minimize the effort to create the pipeline. What should you recommend?
You need to trigger an Azure Data Factory pipeline when a file arrives in an Azure Data Lake Storage Gen2 container. Which resource provider should you enable?
HOTSPOT From a website analytics system, you receive data extracts about user interactions such as downloads, link clicks, form submissions, and video plays. The data contains the following columns. You need to design a star schema to support analytical queries of the data. The star schema will contain four tables including a date dimension. To which table should you add each column? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
HOTSPOT You need to output files from Azure Data Factory. Which file format should you use for each type of output? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
You have files and folders in Azure Data Lake Storage Gen2 for an Azure Synapse workspace as shown in the following exhibit. You create an external table named ExtTable that has LOCATION='/topfolder/'. When you query ExtTable by using an Azure Synapse Analytics serverless SQL pool, which files are returned?
HOTSPOT You have an Azure Data Lake Storage Gen2 account named account1 that contains a container named Container'1. Container1 contains two folders named FolderA and FolderB. You need to configure access control lists (ACLs) to meet the following requirements: * Group1 must be able to list and read the contents and subfolders of FolderA. * Group2 must be able to list and read the contents of FolderA and FolderB. * Group2 must be prevented from reading any other folders at the root of Container1. How should you configure the ACL permissions for each group? To answer, select the appropriate options in the answer are a. NOTE: Each correct selection is worth one point.
You use Azure Stream Analytics to receive Twitter data from Azure Event Hubs and to output the data to an Azure Blob storage account. You need to output the count of tweets during the last five minutes every five minutes. Each tweet must only be counted once. Which windowing function should you use?
HOTSPOT You configure version control for an Azure Data Factory instance as shown in the following exhibit. Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic. NOTE: Each correct selection is worth one point.
You are creating a new notebook in Azure Databricks that will support R as the primary language but will also support Scala and SQL. Which switch should you use to switch between languages?

Question 270 - DP-203 discussion

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HOTSPOT

You have an Azure Blob storage account that contains a folder. The folder contains 120,000 files. Each file contains 62 columns. Each day, 1,500 new files are added to the folder.

You plan to incrementally load five data columns from each new file into an Azure Synapse Analytics workspace. You need to minimize how long it takes to perform the incremental loads. What should you use to store the files and format?

Question 270
Correct answer: Question 270

Explanation:

Box 1 = timeslice partitioning in the folders

This means that you should organize your files into folders based on a time attribute, such as year, month, day, or hour. For example, you can have a folder structure like /yyyy/mm/dd/file.csv. This way, you can easily identify and load only the new files that are added each day by using a time filter in your Azure Synapse pipeline12. Timeslice partitioning can also improve the performance of data loading and querying by reducing the number of files that need to be scanned Box = 2 Apache Parquet

This is because Parquet is a columnar file format that can efficiently store and compress data with many columns. Parquet files can also be partitioned by a time attribute, which can improve the performance of incremental loading and querying by reducing the number of files that need to be scanned123. Parquet files are supported by both dedicated SQL pool and serverless SQL pool in Azure Synapse Analytics2.


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asked 02/10/2024
Stian Godoe
42 questions
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