Which three are advantages of SONET？（）

A.It is mainly used in Intra-AS MPLS VPLS deployments and is configured at the ASBR to avoid misconfiguration of the Route Target assignment for VPN configurations
B.It is mainly used in Inter-AS MPLS VPN deployments and is configured at the ASBR to avoid misconfiguration of the Route Target assignment for VPN configurations
C.It is mainly used in Intra-AS MPLS VPLS deployments and is configured at the Router Reflectorto avoid misconfiguration in Route Target assignment for VPN configurations
D.It is mainly used in Inter-AS MPLS VPLS deployments and is configured at the Router Reflectorto avoid misconfiguration of the Route Target assignment for VPN configurations
E.It is mainly used in Inter-AS MPLS VPLS deployments and is configured at the PE router to avoid to misconfiguration of the Route Target assignment for VPN configurations

A.Routing information received through an IBGP session is not forwarded to another IBGP neighbor， onlyto EBGP neighbors
B.Routing information received through an EBGP session is not forwarded to another EBGP neighbor，only to IBGP neighbors
C.BGP neighbor peerings are established and sychronized using the TCP 3-way handshake
D.BGP shall not advertise a route until that route has been learned via an IGP also

A.10 Gigabit Ethernet does not support VLAN definition
B.10 Gigabit Ethernet supports full duplex links， but does not support half duplex links
C.10 Gigabit Ethernet supports unshielded or shielded twisted-pair cable connections
D.10 Gigabit Ethernet supports Carrier Sense Multiple Access with Collision Detection （CSMA/CD）
E.10 Gigabit Ethernet supports optical fiber connections in single mode only. Mufti mode is not supported