A service provider has configured an HP 5406 zl switch to support QinQ in mixed mode. Port A1 is
a member of C-VLAN 100. Which usage is supported by this configuration?

A.
Port A1 is an uplink port that forwards the customer’s tunneled traffic to another switch in the
service provider’s network.

B.
Port A1 is connected to a customer’s switch, and the switch tunnels all VLAN traffic received on
this port through the service provider’s network.

C.
Port A1 is connected to a device in the service provider’s network and transmits traffic to and
from that device.

D.
Port A1 is connected to a customer’s switch, and the switch tunnels C-VLAN 100 traffic
received on this port through the service provider’s network.