Refer to the Exhibit.
In the exhibit, switches S1, S2, and S3 have Q-in-Q tunneling configured between Site 1 and Site
2.Which configuration on switch S1 allows Site 1 and Site 2 to exchange Cisco Discovery Protocol
(CDP), but blocks VLAN Trunking Protocol (VTP) between Site 1 and Site 2?
A.
{master:0}[edit vlans provider-vlan]
user@S1# set dot1q-tunneling layer2-protocol-tunneling cdp
B.
{master:0}[edit vlans provider-vlan]
user@S1# set dot1q-tunneling l2tp cdp
C.
{master:0}[edit vlans provider-vlan]
user@S1# set dot1q-tunneling layer2-protocol-tunneling deny vtp
D.
{master:0}[edit vlans provider-vlan]
user@S1# set dot1q-tunneling l2tp deny vtp