单项选择题 Routers A and B have an OC12c and a GE link between them and are running OSPF over both ofthese links. Which statement is correct, assuming the default JUNOS software OSPF metric calculation?（）

单项选择题 Which command at the [edit protocols isis] hierarchy level forces routed traffic to avoid this router?（）

单项选择题 Which action occurs when the static route 10.0.55.2/32 is evaluated by the policy main-policy? （）