Which three functions are performed by the PE router in an MPLS Layer 3 VPN? (Choose three.)

A.
exchanges routing updates with the CE router

B.
translates the CE routing information into VPNv4 routes

C.
exchanges VPNv4 routes with other PE routers over MP-BGP

D.
imports and exports RTs that are received from the P routers

E.
exchanges RDs with the P routers

F.
exchanges VPN labels with the CE routers

Explanation:

http://www.cisco.com/en/US/docs/routers/crs/software/crs_r4.1/lxvpn/configuration/guide/vc41v3.h
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How MPLS L3VPN Works
MPLS VPN functionality is enabled at the edge of an MPLS network. The PE router performs the
followingtasks:
•Exchanges routing updates with the CE router

•Translates the CE routing information into VPN version 4 (VPNv4) and VPN version 6 (VPNv6)
routes
•Exchanges VPNv4 and VPNv6 routes with other PE routers through the Multiprotocol Border
GatewayProtocol (MP-BGP)