凝汽器的中间支持答板有什么作甩？
It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.Which of the following processes are required to accomplish this task?（） [" configure static frame relay map entries for each subinterface network."," remove the ip address from the physical interface"," create the virtual interfaces with the interface command"," configure each subinterface with its own IP address"," disable split horizon to prevent routing loops between the subinterface networks"," encapsulate the physical interface with multipoint PPP"]
动态相关性
《沉沦》、《夜茫茫》的作者是？（） ["张资平","田汉","陶晶孙","郁达夫"]
如果让ping命令一直ping某一个主机，应该使用（）参数。 ["-A","-S","-T","–F"]
教学媒体的组合性
