Which two features protect the ERX Edge Router from denial-of-service attacks?（）

单项选择题A customers application requires 30 virtual paths on a four port OC3 card. Which command allows this functionality?（）

A.A
B.B
C.C
D.D

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?（）

A.A
B.B
C.C
D.D
E.E

单项选择题Which command generates a BERT test pattern of all zeros on T1 number 1 for ten minutes?（）

A.A
B.B
C.C
D.D

单项选择题Which command generates a BERT test pattern of alternating ones and zeros on T1 number 1 for one minute?（）

A.A
B.B
C.C
D.D

单项选择题Which command displays the results of a loopback test you executed on a CT3 line module in slot 5, port 0, t1 number 4?（）

A.A
B.B
C.C
D.D