多项选择题
Which three attributes are advertised to the remote PE in BGP-based VPNs?（）
A. circuit ID B. VPN label C. route target D. VPN number E. route distinguisher
单项选择题 On what is the Kompella control plane based?（）
单项选择题 Which JUNOS software operational-mode command displays the status of a Martini VPN?（）
多项选择题 Which three RP election mechanisms are available in a PIM-SM domain?（）
