多项选择题
What are three benefits of class of service?（）
A. It can make a slow network faster B. It can prioritize latency-sensitive traffic C. It can elimitane congestion D. It can control congestion E. It can allocate bandwidth for different classes of traffic
单项选择题 Which command will display the contents of the forwarding table?（）
单项选择题 Which operational mode command can be used to synchronize the local system with an NTP server?（）
多项选择题 Which two statements are true about the primary address on an interface? （）
