A.HDLC B.ATM AAL5 C.PPP D.Ethernet VLAN E.Frame Relay
A.LDP notification B.L2TPv3 session C.VPN route target communities D.Multiprotocol BGP peering of PE routers E.MPLS forwarding
A.TE tunnels that are configured with the FRR option cannot be used as backup tunnels. B.TE tunnels that are configured with the FRR option can be used as backup tunnels. C.The backup tunnel that is used to protect a physical interface must have a valid IP address configured. D.Interfaces must use MPLS global label allocation. E.The source IP address of use backup tunnel and the merge point (MP) should not be reachable.