多项选择题

Which two forms of DSL connectivity provide the same bandwidth in both directions？（）

A.ADSL
B.HDSL
C.SDSL
D.RADSL

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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