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單項選擇題

A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?（）

A.DSLAM
B.DSL modem
C.ERX Edge Router
D.customer workstation

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多項選擇題

What are the two well-known UDP ports used by RADIUS accounting servers?（）

A.1645
B.1646
C.1812
D.1813

單項選擇題

What is a method by which an IP interface can be assigned to a virtual router in a PPP over ATM environment?（）

A.policy list
B.RADIUS VSA
C.classifier ACL
D.LCP negotiation