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單項(xiàng)選擇題

By default, which PPP mechanism does the ERX Edge Router use to monitor the session for a PPP over ATM client?（）

A. ping
B. hello
C. get request
D. echo request

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單項(xiàng)選擇題

Which command displays the IPNCP parameters for all connected PPPoA subscribers?（）

A. show users
B. show subscriber
C. show ppp interface
D. show ppp interface status ip

單項(xiàng)選擇題

Which CLI command displays the currently connected PPPoA subscribers?（）

A. show users
B. show subscriber
C. show aaa subscriber
D. show connected subscriber