多项选择题
Which two multicast groups support Auto-RP mapping and discovery?（）
A.224.0.0.39 B.224.0.1.39 C.224.0.0.40 D.224.0.1.40
单项选择题 In JUNOS software, what is the default interface metric for IS-IS?（）
多项选择题 Firewall filter policers can perform which two actions?（）
多项选择题 Which two mechanisms control route distribution between PE routers in a 2547bis VPN?（）
