单项选择题
The router receives a login request from a PPP over ATM client and examines the domain map for the client's domain. The router finds no entries currently configured within the domain map. What does the router do with the login request?（）
A. The router rejects it. B. The router tunnels it via L2TP. C. The router authenticates it locally. D. The default virtual router authenticates it.
单项选择题 By default, which PPP mechanism does the ERX Edge Router use to monitor the session for a PPP over ATM client?（）
单项选择题 Which command displays the IPNCP parameters for all connected PPPoA subscribers?（）
单项选择题 Which CLI command displays the currently connected PPPoA subscribers?（）
