Which statement describes the rule of

Which statement describes the rule of split horizon?（）

A Only routers can split boundaries (horizons) between concentric networks.
B All distance vector protocols require fall back routers that may cause momentary loops as the topology changes.
C Networks can only remain fully converged if all information about routers is sent out all active interfaces.
D Information about a route should not be sent back in the direction from which the original update come.
E Each AS must keep routing tables converged to prevent dead routes from being advertised across the AS boundary.

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参考解析：

分类：CCNA(640-801)题库

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