单项选择题
Which multicast mode does Auto-RP require?（）
A. Link-mode B. Dense mode C. Sparse mode D. Sparse-dense mode
多项选择题 Which three mechanisims support the forwarding plane of a Layer 3 VPN in JUNOS software? （）
单项选择题 What is the primary purpose of VPLS?（）
多项选择题 What are three examples of a CPE-provisioned VPN? （）
