Can you help me clarify some doubts about using Bootcamp for installing Windows 10 on High Sierra Macbook?

Once I have both OSX and then Windows 10 on bootcamp, can I see/modify the files of other partition when I use the macOS ?

And I'm able to see/modify the files of OSX partition when I use the Windows 10 ?

Can I do 3 partition: 1 with macOS, 1 with bootcamp Windows, 1 exFat only for having files so I can access them from both the operative systems? And in this case will I have the same speed to access files as if I had them directly in the partition of the OS I'm using at that moment?

Thank you in advance for all your help and suggestions!!

submitted by /u/john25mr
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