多项选择题
A.A
B.B
C.C
D.D
单项选择题 A customers application requires 30 virtual paths on a four port OC3 card. Which command allows this functionality?（）
多项选择题 An ATM PVC is configured as atm pvc 1 0 101 aal5snap 256 128 100 . Which three statements describe the traffic management characteristics of this interface?（）
单项选择题 Which command generates a BERT test pattern of all zeros on T1 number 1 for ten minutes?（）
