17 01 2018
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QUESTION 42
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this sections, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You are monitoring user queries to a Microsoft Azure SQL data warehouse that has six compute nodes.
You discover that compute node utilization is uneven. The rows_processed column from sys.dm_pdw_workers shows a significant variation in the number of rows being moved among the distributions for the same table for the same query. You need to ensure that the load is distributed evenly across the compute nodes.
Solution: You change the table to use a column that is not skewed for hash distribution.
Does this meet the goal?
A. Yes
B. No
Answer: A
QUESTION 43
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You are monitoring user queries to a Microsoft Azure SQL data warehouse that has six compute nodes.
You discover that compute node utilization is uneven. The rows_processed column from sys.dm_pdw_workers shows a significant variation in the number of rows being moved among the distributions for the same table for the same query.
You need to ensure that the load is distributed evenly across the compute nodes.
Solution: You add a nonclustered columnstore index.
Does this meet the goal?
A. Yes
B. No
Answer: B
QUESTION 44
You have a Microsoft Azure SQL data warehouse named DW1 that is used only from Monday to Friday.
You need to minimize Data Warehouse Unit (DWU) usage during the weekend.
What should you do?
A. From the Azure CLI, run the account set command.
B. Run the ALTER DATABASE statement.
C. Call the Create or Update Database REST API.
D. Run the Suspend-AzureRmSqlDatabase Azure PowerShell cmdlet.
Answer: D
QUESTION 45
You have a Microsoft Azure Data Lake Analytics service.
You have a CSV file that contains employee salaries.
You need to write a U-SQL query to load the file and to extract all the employees who earn salaries that are greater than $100,000. You must encapsulate the data for reuse.
What should you use?
A. a table-valued function
B. a view
C. the extract command
D. the output command
Answer: A
Explanation:
https://docs.microsoft.com/en-au/azure/data-lake-analytics/data-lake-analytics-u-sql- catalog
QUESTION 46
You have a Microsoft Azure Data Lake Analytics service and an Azure Data Lake Store.
You need to use Python to submit a U-SQL job.
Which Python module should you install?
A. azure-mgmt-datalake-store
B. azure-mgmt- datalake-analytics
C. azure-datalake-store
D. azure-mgmt-resource
Answer: B
Explanation:
https://docs.microsoft.com/en-us/azure/data-lake-analytics/data-lake-analytics-manage-use-python-sdk
QUESTION 47
You have a Microsoft Azure Data Lake Analytics service.
You need to provide a user with the ability to monitor Data Lake Analytics jobs. The solution must minimize the number of permissions assigned to the user.
Which role should you assign to the user?
A. Reader
B. Owner
C. Contributor
D. Data Lake Analytics Developer
Answer: A
Explanation:
https://docs.microsoft.com/en-us/azure/data-lake-analytics/data-lake-analytics-manage-use-portal
QUESTION 48
You plan to use Microsoft Azure Event Hubs to ingest data. You plan to use Azure Stream Analytics to analyze the data in real time and to send the output directly to Azure Data Lake Store.
You discover duplicate records in the output data.
What is a possible cause of the duplicate records?
A. There are connectivity issues with the output adapter.
B. There is a connectivity issue between the data source and the event hub.
C. There are multiple deliveries to the output adapter that writes the output events.
D. The Stream Analytics output adapter writes the output events transactionally
Answer: A
Explanation:
https://msdn.microsoft.com/en-us/library/azure/mt721300.aspx
QUESTION 49
You have an on-premises Microsoft SQL Server instance.
You plan to copy a table from the instance to a Microsoft Azure Storage account.
You need to ensure that you can copy the table by using Azure Data Factory.
Which service should you deploy?
A. an on-premises data gateway
B. Azure Application Gateway
C. Data Management Gateway
D. a virtual network gateway
Answer: C
QUESTION 50
You are using Cognitive capabilities in U-SQL to analyze images that contain different types of objects.
You need to identify which objects might be people.
Which two reference assemblies should you use? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
A. ExtPython
B. ImageCommon
C. ImageTagging
D. ExtR
E. FaceSdk
Answer: BC
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