A.The GE0/0/1 port of the switch does not carry VLAN TAG when sending VLAN10 data frames

B.The GE0/0/2 port of the switch carries VLAN TAG when sending VLAN20 data frames

C.The user manually created 4 VLANs

D.The GE0/0/1 port of the switch does not carry VLAN TAG when sending VLAN20 data frames

A.Both ports of SWB are designated ports

B.The G0/0/2 port of SWA is stable in Forwarding state

C.G0/0/2 port of SWB is stable in Forwarding state

D.The G0/0/3 port of SWA is stable in Forwarding state

E.Both ports of SWA are designated ports

A.Reduce the number of link connections

B.Reduce routing table entries

C.Reduce the use of IP addresses

D.Reduce the number of equipment

A.It is used to mark whether there are other labels behind this label, 0 means yes, 1 means no

B.It is used to mark whether there are other labels behind this label, 1 means yes, 0 means no

C.s bit has only 1 bit in frame mode and 2 bit in cell mode

D.s bit exists in every MPLS packet header

A.0x8200

B.0x7200

C.0x9100

D.0x8100