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?（）
A. There are two equal cost paths between a and b. B. The ge link is the preferred path between a and b. C. The oc12c link is the preferred path between a and b. D. Manual metric assignment must be configured to determine the outcome
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? （）
多项选择题 Which three are valid IPv6 interface addresses?（）
