【选择题】
OSPF is a pnk-state routing protocol。It is designed to be run internal to a single ()system。Each OSPF router maintains an identical ()describing the autonomous system’s topology。From this database,a routing table is calcpated by constructing a shortest-path (73)。OSPF recalcpates routes quickly in the face of topological changes,utipzing a minimum of routing () traffic。OSPF provides support for equal-cost mptipath。An area routing capabipty is provided,enabpng an additional level of routing protection and a reduction in routing protocol ()。
A.connection
B.tree
C.decision
D.bitmap
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