问题
多项选择题
两台运行BGP的路由器之间，邻居建立时间为46小时，那么最近24小时内，这两台设备之间一定没有交互过的报文是（）.
A.Open
B.KeepAlive
C.Update
D.Notification
答案
参考答案：A, D
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两台运行BGP的路由器之间，邻居建立时间为46小时，那么最近24小时内，这两台设备之间一定没有交互过的报文是（）.
A.Open
B.KeepAlive
C.Update
D.Notification
参考答案：A, D
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