单项选择题
How many traffic classes are supported on the ERX Edge Router?（）
A.1 B.2 C.4 D.8
单项选择题 On which component are RED and WRED managed in the router?（）
单项选择题 Conformed and commited buffer percent values are configured with which parameter?（）
单项选择题 Which statement describes queue and buffer managment in the E-series router?（）
