单选题路由器出现Serial interface-number is up，line protocol is down（DTE）的状态，可能出现的问题不包括（）。A本地或远程路由器配置丢失B线路故障CCSU/DSU故障DLINE未与CSU/DSU联接
单选题
路由器出现Serial interface-number is up，line protocol is down（DTE）的状态，可能出现的问题不包括（）。
A
本地或远程路由器配置丢失
B
线路故障
C
CSU/DSU故障
D
LINE未与CSU/DSU联接
参考解析
解析：
暂无解析
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