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多选题
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
答案解析
正确答案：ACD
