EX4200 Uplink module

Hi everyone,

I am researching some features on EX 4200.

1)When using Uplink module on EX4200, is it considered as PIC1 ?  

I think it is so interface naming should be  xe/ge  -0/1/port number?

2) Uplink module could be of type  Virtual chasis or data port.  My question is how do we determine what module ( Virtual chassis or Data port Uplink module) is installed?

3) Can we use regular data port either on PIC0 or on uplink data module  for Virtual chassis connection?

4)Are all ports on UPLINK DATA MODULE for tengig by default and support only 10G SFP?

Thanks and have a nice evening.