You created a storage account contosostorage and a file share named data. Users will map a drive to that file share from Windows 10 home computers. Which outbound port must be opened between the home computers and the file share?
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Correct answer: 445.
Why this is the answer
The correct answer is 445. Azure Files uses the Server Message Block (SMB) protocol for communication, which operates on TCP port 445. To access an Azure file share from a Windows 10 computer, this port must be open for outbound connections. Port 80 is used for HTTP web traffic. Port 443 is used for HTTPS secure web traffic. Port 3389 is used for Remote Desktop Protocol (RDP) connections. None of these ports are used for direct SMB access to Azure file shares.
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