多项选择题 Given the community: community transit-peers members "^(123|456):[3579].0?$"; Which threecommunities does this expression match? （）

单项选择题 You want to configure a single EBGP peering session over parallel physical circuits. Which BGPfeature enables load balancing in this scenario?（）

多项选择题 Which three steps are used to configure IPv6 in JUNOS software?（）