In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicast traffic to a group？（）A、The source must send a PIM Register message to the rendezvous point （RP）B、The source must first join the multicast group using IGMP before sendingC、The source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）D、No control plane signaling needs to be performed；the source can simply begin sending on the local subnet
In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicast traffic to a group？（）
- A、The source must send a PIM Register message to the rendezvous point （RP）
- B、The source must first join the multicast group using IGMP before sending
- C、The source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）
- D、No control plane signaling needs to be performed；the source can simply begin sending on the local subnet
相关考题：
下列关于PIM-SM中BSR与RP的表述，正确的有（）。A、—个PIM-SM域中只能有一个BSRB、—个PIM-SM域中只能有一个C-BSRC、一个PIM-SM域中只能有一个RPD、—个PIM-SM域中只能有一个C-RP
What is Phantom RP used for？（）A、it is used for load balancing in bidirectional PIMB、it is used for redundancy in bidirectional PIMC、it is used for redundancy in PIM-SMD、it is used for load balancing in PIM-SM
What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）A、immediately after receiving the first packet on the shared tree for a given （S，G）B、after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）C、10 seconds after receiving the first packet on the shared tree for a given （S，G）D、30 seconds after receiving the first packet on the shared tree for a given （S，G）E、after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
Which three RP election mechanisms are available in a PIM-SM domain?（）A、StaticB、Auto-RPC、Dynamic-RPD、Bootstrap routerE、Anycast-RP
关于RP和BSR，下列说法正确的有（）。A、PIM-SM中RP可以通过手工指定，也可以通过动态选举B、配置RP通过动态选举时，可以把有意成为RP的路由器配置为C-RPC、在一个PIM-SM域中只能有一个BSRD、BSR负责在PIM-SM域i收集并发布RP信息
下列关于PIM-SM中BSR和RP作用的表述，正确的有（）。A、RP是组播接收者加入某组播组的汇聚点B、RP是组播源转发组播流量的中转站C、BSR控制RP信息的收集与传播，是PIM-SM域的管理核心D、若PIM-SM域没有BSR，则RP信息无法扩散，组播接收者无法正常加入，组播流量无法正常转发
Which two statements about RPF checks in Multicast Source Discovery Protocol （MSDP） are true？（）A、It prevents message looping， Session Advertisement （SA）messages must be RPF checkedB、RPF check should be done against the route to the source S of the corresponding PIM-SM domainC、RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SAD、RPF checking Session Advertisement （SA） messages will cause message looping
In PIM-SM operations，to which device does the first router that connects with the multicast source sendthe register message？（）A、RPB、multicast sourceC、IGMP routerD、multicast receiverE、PIM designated router
单选题What is Phantom RP used for？（）Ait is used for load balancing in bidirectional PIMBit is used for redundancy in bidirectional PIMCit is used for redundancy in PIM-SMDit is used for load balancing in PIM-SM
多选题Which three RP election mechanisms are available in a PIM-SM domain?（）AStaticBAuto-RPCDynamic-RPDBootstrap routerEAnycast-RP
多选题Which three RP election mechanisms are available in a PIM-SM domain？（）AStaticBAuto-RPCDynamic-RPDBootstrap router
多选题What are two purposes of the 224.0.1.40 address in Auto-RP?（）AConfigured mapping agents listen to this address.BMapping agents select RP for a group based on highest IP address of all the group's C-RPs.CRP mapping agent advertises complete list of group-to-RP mappings.DAll configured PIM-SM routers listen to this address and learn the correct RP to use for each known group.
单选题In PIM-SM operations，to which device does the first router that connects with the multicast source sendthe register message？（）ARPBmulticast sourceCIGMP routerDmulticast receiverEPIM designated router
单选题In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicast traffic to a group？（）AThe source must send a PIM Register message to the rendezvous point （RP）BThe source must first join the multicast group using IGMP before sendingCThe source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）DNo control plane signaling needs to be performed；the source can simply begin sending on the local subnet