单项选择题
Which CLI command displays FECN and BECN information on a Frame Relay interface configured on serial interface 4/0:3/1 ?（）
A.A B.B C.C D.D
Which two services protect the ERX Edge Router from una...
多项选择题
Which two services protect the ERX Edge Router from unauthorized CLI logins?（）
Which two features protect the ERX Edge Router from den...
Which two features protect the ERX Edge Router from denial-of-service attacks?（）
A customers application requires 30 virtual paths on a ...
A customer's application requires 30 virtual paths on a four port OC3 card. Which command allows this functionality?（）
