问题:
A . OSPF hello interval is 5 seconds
B . OSPF hello interval is 1 second
C . OSPF dead interval is 1 second
D . OSPF dead interval is 5 seconds
E . OSPF dead interval is 20 seconds
F . OSPF hello interval is 0.2 second
● 参考解析
本题暂无解析
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