单项选择题 You have 50 subscribers accessing a LAC to connectto ISP1.com.What is the L2TP Control Connections and Sessions for the subscribers?（）

单项选择题 You are configuring the ERX Edge Router as an LNS in an L2TP network.Which statement is true about the value of the remote host parameter?（）

单项选择题 What is the function of L2TP？（）