Which three mechanisms are used to implement MPLS TE? (Choose three.)

A.
tunnel interface

B.
CSPF

C.
RSVP

D.
LDP

E.
MP-BGP

Explanation:

Constrained-Based Shortest Path First (CSPF).
Resource Reservation Protocol – Traffic Engineering is an extension of the resource reservation
protocol (RSVP) for traffic engineering.