A.ERX ATM IP addressB.DSL router IP addressC.DSL bridge……

多项选择题A Bridged 1483 service offering is grouping DSL users into a large subnet.What are three characteristics of this configuration？（）

A.It burns IP addresses.
B.It conserves IP addresses.
C.A group of PVCs is a subnet.
D.It provides an umbered IP address to the ERX
E.It provides an IP unnumbered address to ERX

单项选择题How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?（）

A.It monitors messages from the external server and updates the routing table as needed.
B.It maintains the leases for the DHCP server and reassigns addresses to new subscribers.
C.It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.
D.It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.

单项选择题Which configuration command allows the ERX Edge Router to advertise customer networks into the provider’s IGP？（）

A.redistribute direct
B.redistribute static
C.redistribute connected
D.redistribute access-internal

多项选择题Which two B-RAS service offerings maintain the analog dial-up model with centralized user authentication，authorization，andaccounting？（）

A.Routed1483
B.Bridged1483
C.PPPoverATM
D.PPPoverEthernet

单项选择题You would like to configure 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 pvc0/33 aal5snap
B.atm pvc33033 aal5snap
C.atm pvc0/33 aal5snap ubr
D.atm pvc33033 aal5snap ubr