单选题Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）A Incoming Call Reply, Incoming Call Request, Incoming Call ConnectedB Incoming Call Reply, Incoming Call Connected, Incoming Call R
题目
单选题
Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）
A
Incoming Call Reply, Incoming Call Request, Incoming Call Connected
B
Incoming Call Reply, Incoming Call Connected, Incoming Call Request
C
Incoming Call Request, Incoming Call Reply, Incoming Call Connected
D
Incoming Call Request, Incoming Call Connected, Incoming Call Reply