单项选择题
With the command atm bulk-config test vc-range 1 3 200 400, what is the correct interpretation of the numeric values following the vc-range?（）
A.vpi 1 vci 200, vpi 3 vci 400 B.vpi 1 through 3, vci 200 through 400 C.vpi 1 vci 200 through 400, vpi 3 vci 200 through 400 D.vci 1 through 3, vpi 200 through 400
单项选择题 What does the ip access-routes configuration command accomplish?（）
单项选择题 Which profile configurations allows either PAP or CHAP to be used for authentication?（）
单项选择题 Which set of commands allows PPPoE dynamic interfaces to use a profile called config-info?（）
