In a typical MPLS/VPN service architecture:
PE (Provider Edge) router: Directly connects to thecustomer edge (CE)device.
P (Provider) router: Only forwards MPLS-labeled packets, doesnot touch customer routes.
LSR (Label Switch Router): General term, can be either PE or P depending on placement.
Correct Answer: A – PE
Itinterfaces with CE devicesandruns customer routing protocols(e.g., OSPF, BGP).
[Reference:, Nokia MPLS and VPN Guide – PE vs P Role, Nokia SRA Study Guide – PE-CE and Core Router Design, , , ]
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