A.ADSLB.HDSLC.SDSLD.RADSLWhich two forms of DSL connect……

单项选择题You would like toconfigure an ATM PVC with a virtual circuit identifier of 33 on virtual path 0.The PVC should use an unspecified bit rate and be encapsulated in the AAL5SNAP format. Which command accomplishes this goal?（）

A.atm pvc 0/33 aal5snap
B.atm pvc 33 0 33aal5snap
C.atm pvc 0/33 aal5snap ubr
D.atm pvc 33 0 33 aal5snap ubr

单项选择题Which configuration command creates a virtual router called isp-1？（）

A.virtual-routerisp-1
B.virtual-routerISP-1
C.virtual-routerVRisp-1
D.virtual-routerVRISP-1

单项选择题Your ERX router is supporting 100 virtual routers. A specific line module supports IP interfaces in 5 virtual routers.How many routing tables are maintained on that module?（）

A.0
B.1
C.5
D.100

单项选择题Which service does the ERX Edge Router support with a virtual router?()

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?（）

A.over an ATM PVC
B.over a FastEthernet bus
C.overa Gigabit Ethernet bus
D.over high speed serial bus