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）
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相关考题
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单项选择题
TypicalADSLbroadbandInternetaccessrequiresausernameandpasswordtobeenteredonend-userPCconnectedtotheADSLmodeminorderfortheendusertogainaccesstotheInternet.ifaCiscoADSLrouterisusedinsteadofanADSLmodem，whatfunctionalityisrequiredontheCiscoADSLroutersotheend-userconnectedtotheCiscoADSLroutercanaccesstheInternetwithoutenteringausernameandpassword？（）
A.PPPoA
B.Route Bridge Encapsulation（RBE）
C.PPPoE client
D.Integrated Routing and Bridging（IRB）
E.AAA -
单项选择题
WhatistheroleofForwardingEquivalenceClass（FEC）inMPLS？（）
A.FEC determines how IP packets are forwarded in MPLS LSP.
B.FEC determines how to establish an LSP path.
C.FEC determines how a group of IP packets are mapped to an LSP.
D.FEC determines how MPLS labels are stacked in LSP.
E.None of above. -
单项选择题
TheIPv6addressFE80：：656：78FF：FE9A：BCDEiswhattypeofaddress？（）
A.Site-local
B.Link-local
C.Multicast
D.None of the above
