单项选择题
Which command will save the current active configuration as the rescue configuration?（）
A.A B.B C.C D.D
单项选择题 Which command would correctly set a routers date and time?（）
单项选择题 Which commnand would correctly define a routers host-name?（）
单项选择题 What is used to segment larger networks into smaller networks?（）
