单选题Which statement describes the function of the LNS in a L2TP environment?（）AIt initiates both the PPP session and the tunnel.BIt initiates the PPP session and terminates the tunnel.CIt terminates the PPP session and initiates the tunnel.DIt terminates the PPP session and terminates the tunnel.
单选题
Which statement describes the function of the LNS in a L2TP environment?（）
A
It initiates both the PPP session and the tunnel.
B
It initiates the PPP session and terminates the tunnel.
C
It terminates the PPP session and initiates the tunnel.
D
It terminates the PPP session and terminates the tunnel.
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