DRAG DROP -
Refer to exhibit.
PE1 and PE2 has a Layer 2 VPN over a GRE tunnel.
The GRE tunnel built between P1 and P2 has LDP enabled.
Consider a packet capture of the packets from CE1 and CE2 at P1 and R1 link.
Drag and drop the headers on the left onto the correct order of the encapsulation on the right, starting from the inner header (at the top) to the outer header (at the bottom)
Select and Place: