单项选择题
A. network control
B. best effort
C. assured forwarding
D. expedited forwarding
多项选择题 Which two IS-IS hello values must match to form a Level 1 IS-IS adjacency? （）
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?（）