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You are the administrator of the large OSPF network and are considering dividing it to multiple areas.What are two advantages of configuring multiple OSPF areas()?

A.It eliminates the need for a DR or BDR in the OSPF network.
B.It eliminates security concerns by segregating portions of the network.
C.Type 1 and 2 LSAs are confined to a single area,reducing routing overhead.
D.Area members have smaller topological databases than if the network was one large area,requiring less CPU to derive routes。

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