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多项选择题Which three statements about OSPF areas are true?()

A、Areas introduce a boundary on the link - state updates.

B、Areas are  logical definitions specific to any given router.

C、All routers within an area have the exact link - state database.

D、The calculation of the Dijkstra algorithm on a router is limited to changes within an area.

E、The area designated router will always  have a priority of 0.

  • A,C,D
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