On what device in the  MPLS  network does the  MPLS  forwarding medium voltage label (  PUSH  ) operation occur  ?

On what device in the  MPLS  network does the  MPLS  forwarding medium voltage label (  PUSH  ) operation occur  ?
A . The packet enters the  MPLS  network at the  LER  on device
B . On  all  LSR  devices in the middle of the  MPLS  network
C . The packet leaves the  MPLS  network address  LER  on device
D . On  all devices of the  MPLS  network

View Answer

Answer:   A

Explanation:

push-swap-pop