单项选择题
What is the function of L2TP？（）
A.It allows L2F tunnels across the network. B.It allows GRE tunnels across the network. C.It allows PPTP tunnels across the network. D.It allows PPP to be tunneled across a network
多项选择题 Which two statements are true about L2TP tunnel switching?（）
单项选择题 Which CLI command is used to examine whether an L2TP tunnel can be established for domain isp1.com?（）
单项选择题 Where are L2TP attributes configured on a LAC?（）
