单项选择题
A.MPLS Traffic Engineering B.Dynamic access-lists C.Authentication D.Receive ACL E.Unicast RPF
InwhichstatecanBGPpeersexchangeUpdatemessages？（）A.Activ...
单项选择题In which state can BGP peers exchange Update messages？（）
A.Active B.OpenSent C.OpenConfirm D.Established E.Idle
InPIM-SMoperations，thefirstrouterconnectedtothemulticas...
单项选择题In PIM-SM operations， the first router connected to the multicast source sends the Register message towhich device？（）
A.Multicast source B.Multicast receiver C.RP D.RP mapping agent E.Designated Router （DR）
TypicalADSLbroadbandInternetaccessrequiresausernameandp...
单项选择题Typical ADSL broadband Internet access requires a username and password to be entered on end-userPC connected to the ADSL modem in order for the end user to gain access to the Internet.if a Cisco ADSLrouter is used instead of an ADSL modem，what functionality is required on the Cisco ADSL router so theend-user connected to the Cisco ADSL router can access the Internet without entering a username andpassword？（）
A.PPPoA B.Route Bridge Encapsulation（RBE） C.PPPoE client D.Integrated Routing and Bridging（IRB） E.AAA
