单项选择题
What level of logging is enabled on a Router where the following logs are seen？（）
A.alerts B.critical C.errors D.notifications
单项选择题 The following commands are issued on a Cisco Router： What will the debug output on the console show？（）
问答题 whatwillhappenifuconfiguretworouterasNTPserver（somethinglikethat）.
问答题 The interface is up and protocol is up. When do u get these messages.
