A.Router R2 and R3 swap labels for LSP A and LSP B.

B.Router R2 pushes labels for LSP A, and R3 swaps labels for LSP A.

C.Router R2 and R3 push labels for LSP A and LSP B, respectively.

D.Router R2 swaps labels for LSP A, and R3 pops labels for LSP A.

A.eBGP

B.OSPF

C.IS-IS

D.Static routing

A.?

B.tab character

C.space character

D.info

A.A device used to connect cables with signal amplification.

B.A device that receives and replicates data without Layer 2 header inspection.

C.A device that receives and forwards data based on the MAC destination address.

D.A device that receives and forwards data based on the Layer 3 destination address.

A.IP datagrams are encapsulated in an Ethernet frame for transmission over a SONET network.

B.IP datagrams are encapsulated in a PPP frame for transmission over an SDH network,

C.They are deployed over point-to-point physical topologies to allow sub-50ms convergence.

D.An ADM (Add Drop Multiplexer) is used to connect various sites to the infrastructure.