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

单项选择题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

单项选择题In a PPP over ATM service offering, what is a valid method for assigning an address to the ERX Edge Router?（）

A.DHCP assigned addresses
B.RADIUS assigned addresses
C.IP numbered with a loopback reference
D.IP unnumbered with a loopback reference

单项选择题Which configuration command allows the router to utilize a RADIUS server to authenticate incoming Telnet users?（）

A.aaa new-model
B.aaa telnet login
C.telnet authentication login
D.authentication telnet login

单项选择题What is the purpose of the magic number in an LCP negotiation?（）

A.It is used to detect loops.
B.It is an interface identifier.
C.It selects a compression algorithm.
D.It specifies the transmission media.

单项选择题Which software process sorts client login requests and assigns them to a virtual router for RADIUS service?（）

A.PPP
B.AAA
C.LCP
D.NCP