Answer: A
The Cosmos DB Data Migration tool is an executable tool, which requires no installation to start the migration process. So, to launch the Data Migration tool, double-click on the executable file of the tool, and it will start directly.
When the Data Migration tool launches, the Welcome page will display a piece of introductory information about that tool, providing external links for the tool documentation and for suggesting new features for that tool, as shown below:
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The Data Migration tool can be used to import data into your Cosmos DB container, from different data sources. This includes importing data from JSON files, MongoDB, SQL Server, CSV files, Azure Table storage, Amazon DynamoDB, and Azure Cosmos DB SQL API containers.
In this demo, we will copy data from a SQL Server instance, by choosing the SQL data source, as shown below:
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In order to connect to the SQL Server data source, provide the Standard SQL Server connection string that contains the SQL Server name, the database name, and authorized account credentials to connect to that SQL Server instance. Click on the Verify option to validate the connecting string and make sure that the connection is opened to that SQL Server instance, as below:
For more information on Azure Cosmos DB, please visit the below URL
https://docs.microsoft.com/en-us/azure/cosmos-db/import-data