单项选择题
A.voice over IP
B.wholesale services
C.IP quality of service
D.SNMP management
多项选择题 What are two way sthat IP datagrams are passed from the ingress line module to the egress line module?（）
单项选择题 You would like to install an OC -48c line module in an ERX 1440 Edge Router.Which slots can support this configuration（）
多项选择题 Which protocol is used to transfer files to on the ERX Edge Router？（）