How are copper pours connected to other layers?

[yaqoubdesign]

If I add a copper pour on my top layer (bottom layer is DGND),  and give it the same signal name (DGND):

1)  How does this  copper pour connect  to the DGND layer? I assume some kind of default via with some default spacing?

2)  If I want this copper to be exposed (no solder mask),  do I have to add a tstop polygon to the pour area? 

[mtl_asm · Accepted solution]

1) you have to add the via yourself. simply naming the pour will not automatically generated any physical connection. place a via then name it the same signal as the pour and it should connect to the 2 planes on each layer.

2) yes that should work.

[yaqoubdesign]

Thank you..