What information does the help reference command provide?（） -题库考试答案搜索网

What information does the help reference command provide?（）

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2022-06-29 00:49

A、A brief description of commands and their default values
B、The serial number and version number of the device used to open a support case with JTAC
C、A list of all the active hardware alarms on the device
D、A display of the current configuration while in operational mode

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