单选题下列有关在交换机上发出的banner login"Authorized personnel Only"命令的说法中哪项正确（）。A该命令应在特权执行模式下输入B该命令会导致用户登录前显示Authorized personnel Only消息C该命令会生成并显示错误消息%Ambiguous command：bannermotdD将该命令输入交换机后，屏幕上会显示
单选题
下列有关在交换机上发出的banner login"Authorized personnel Only"命令的说法中哪项正确（）。
A
该命令应在特权执行模式下输入
B
该命令会导致用户登录前显示Authorized personnel Only消息
C
该命令会生成并显示错误消息%Ambiguous command：bannermotd
D
将该命令输入交换机后，屏幕上会显示
参考解析
解析：
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