A.Processing the TTL takes extra time.

B.Requires a protocol to remove loops.

C.MAC learning rate is doubled.

D.FDB size is doubled.

A.PE1 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

B.ASBR2 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

C.ASBR1 sends the data packet with one label: the BGP label.

D.ASBR1 sends the data packet with one label: the service label.

A.Both neighbors R1and R2 should be part of AS 65540.

B.Both neighbors R1and R2 should be part of AS 65560.

C.Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.

D.Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.

A.Monitor and troubleshoot a point-to-point full-duplex link.

B.Can be used at the core to trigger MPLS protection mechanisms when a physical failure detection is not possible.

C.Should not be used at the core to trigger MPLS protection. BFD is the only method that can be used when physical failure detection is not possible.

D.Monitor and troubleshoot end-to-end services.

E.Valuable in the last-mile connection to the Service Provider demarcation device.

A.One Route Distinguisher per VRF per site

B.One Route Distinguisher per VPN

C.One Route Distinguisher per VRF

D.One Route Distinguisher per VRF route