Questions on config file for Apache2 (Win32)

2 questions on config file for Apache2 (Win32)

1.
Assuming my document root is
DocumentRoot "C:\X\Y"

And there is a subdirectory Z under Y, ie. C:\X\Y\Z

Is there any difference between

<Directory C:\X\Y\Z>
...
</Directory>

and

<Directory \Z>
...
</Directory>

2.
Is "/" and "\" equivalent in apache config file for win32?
I am confusing about it.