以下几种分类方式属于正确的VLAN报文类型的有（）。

以下哪一款AN5006-07B2H机型的软件版本加入了解决烽火ONU私网管理IP与局方MGC地址冲突的解决方案（）。

A.R3.07.09.02
B.R3.07.09.03
C.R3.07.09.04
D.RP0102

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When designing OSPF networks，it is not recommended to have an excessive number of routers in any single area.Which two of the following statements describe the consequences of having too many routers in an area（）。

A.Excessive LSA traffic.
B.Frequent routing table recalculation.
C.Frequent adjacencies table recalculation.
D.Unacceptable number of reachability errors.

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