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Answer: abfss
The correct protocol for accessing Azure Data Lake Storage Gen2 from Azure Machine Learning is 'abfss' (Azure Blob File System Secure). This is the recommended protocol for secure access to ADLS Gen2 storage accounts that have hierarchical namespace enabled. The community discussion shows 100% consensus on option C, with references to Microsoft documentation confirming this is the proper URI scheme. Option A (https) is a general web protocol but not the specific ADLS Gen2 protocol. Option B (adl) was used for ADLS Gen1 but is deprecated for Gen2. Option D (wasbs) is for Azure Blob Storage with secure access, not specifically for ADLS Gen2 with hierarchical namespace.
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You are managing an Azure Machine Learning workspace and need to import data from Azure Data Lake Storage Gen2. To build a URI that represents the storage location, which protocol should you use?
A
https
B
adl
C
abfss
D
wasbs
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