单项选择题
Which command do you use to show active alarms?（）
A. show hardware state B. show system alarms C. show chassis state D. show services alarms
单项选择题 Which command do you use to display the messages seen during the last system boot?（）
单项选择题 Which command displays the amount of space available on the storage media?（）
单项选择题 Which operational command would you use to quickly verify the state of all interfaces?（）
