单项选择题
How is a Martini Layer 2 MPLS VPN established?（）
A. established using LDP B. established using BGP C. established using RSVP D. established using IP
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?（）
单项选择题 What is a Label-Switched Path?（）
