多项选择题
Which two statements are true regarding L2TP? （）(Choose two.)
A. Tunnels are initiated by the LAC B. Tunnels are initiated by the LNS C. By default, subscriber authentication occurs on the LNS D. By default, subscriber authentication occurs on the LAC
多项选择题 Regarding L2TP, in which two situations is a service module or service IOA required?（） (Choose two.)
多项选择题 Which three are correct about L2TP tunnel selection algorithms? （）(Choose three.)
单项选择题 How may L2TP tunnel destinations are allowed per domain?（）
