多项选择题
What are two advantages to customers with L2 MPLS VPNs? （）(Choose two.)
A. Service provider has routing control. B. Customers control their own routing. C. Can communicate protocols other than IP. D. Allows them to use separate networks for IP and VPN traffic.
单项选择题 How is a Martini Layer 2 MPLS VPN established?（）
多项选择题 Given the following MPLS L2 configuration command: mpls-relay 10.1.1.1 4 Which two statements true? （）(Choose two.)
单项选择题 Which term describes a group of packets sharing common forwarding characteristics?（）
