多项选择题
What are three physical interface properties?（）
A. payload scrambling B. virtual circuit identifier C. FCS D. link speed E. IP address
多项选择题 Which two statements are true about the primary address on an interface?（）
单项选择题 Which command will delete the current rescue configuration?（）
单项选择题 Which command will save the current active configuration as the rescue configuration?（）
