4A0-108 無料問題集「Alcatel-Lucent Multicast Protocols」

（A）IGMP snooping

（B）IGMP Querier

（C）RP

（D）SSM translation on the access multicast router

（E）PIM routing protocol

（A）Forward the multicast packet to Router D (RP) according to its routing table

（B）Forward the multicast packet out of all the interfaces in its (*,239.1.1.1) entry's outgoing interface list

（C）Discard the multicast packet as RPF-check fails

（D）Forward the multicast packet out of all the interfaces in its (192.168.1.1,239.1.1.1) entry's outgoing interface list

（A）The RPF check succeeds, as PIM uses the multicast routing table first, and then the unicast routing table by default.

（B）The RPF check succeeds, as PIM uses only the unicast routing table by default.

（C）The RPF check fails, as it requires the source address be present in both the unicast and multicast routing tables.

（D）The RPF check fails, as PIM relies exclusively on the multicast routing table by default.

（A）Any router in the PIM multicast domain

（B）Only from the Candidate-BSR

（C）Only from the Candidate-RP

（D）Only from the elected BSR

（A）The PE with a receiver for C-multicast group sends a BGP Shared Tree Join update to the PE attached to the C-RP.

（B）The PE with a receiver for C-multicast group sends a BGP Shared Tree Join update to the RP in the provider core network.

（C）The PE attached to C-RP sends a BGP Shared Tree Join update to the C-RP.

（D）The PE attached to C-RP sends a BGP Shared Tree Join update to the PE attached to the source.

（A）Show router pim neighbor

（B）Show router pim interface

（C）Show router pim status

（D）Show router pim statistics

（A）For broadcast delivery, the source sends a single copy of each packet regardless of the number of receivers.

（B）For unicast delivery, the source sends a single copy of each packet regardless of the number of receivers.

（C）For multicast delivery, the source sends a single copy of each packet regardless of the number of receivers.

（D）For anycast delivery, the source sends a single copy of each packet regardless of the number of receivers.

（A）P-tunnels can be protected with fast reroute for better resiliency.

（B）Traffic engineering of the P-tunnels is possible with P2MP LSPs.

（C）P2MP LSP tunnels forward multicast traffic only to the PEs with interested receivers.

（D）PIM is no longer required in the provider core.

（A）No. As the embedded-rp group-range is wrong

（B）No. As the "rpf6-table" command is missing

（C）No. The configuration of PIM is no problem, but the scope of the group address used to send traffic is wrong

（D）Yes. The configuration of PIM is correct and the receiver should get traffic from the source

（A）(S, G, rpt) Join/Prune

（B）(*, G) Join/Prune

（C）(S, G) Join/Prune

（D）Register Stop

（A）The S-PMSI is instantiated by MPLS tunnels.

（B）The S-PMSI group address range is 232.10.10.0/24.

（C）192.168.1.2 is the system IP address of the source PE.

（D）The customer is sending multicast traffic to group 239.1.1.1.

（A）The source IP address of the customer packet.

（B）The source IP address specified in the MVPN configuration.

（C）The system IP address of the originating PE router.

（D）The outgoing interface IP address of the originating PE router.

（A）It is the delay before the source PE switches traffic from the S-PMSI to the I-PMSI when traffic rate drops below the threshold.

（B）It is the delay before the source PE switches traffic from the I-PMSI to the S-PMSI.

（C）It is the delay before the source PE sends MDT Join TLVs.

（D）It is the delay before the receiver PE prunes the S-PMSI.

（A）There is not enough information provided to answer the question

（B）The PIM RPF check may fail since traffic from the source may arrive on one interface while the IP route to the source may point to another interface on the PIM router

（C）There will be no impact since the shared and source path trees are built from the receiver to the source

（D）PIM does not work in an asymmetric topology and therefore the RPF check will not be done

（A）An upstream router from the diverging router on the Shared Path Tree

（B）The router where the Source and Shared Path Trees diverge

（C）The first hop router from the source

（D）The RP

（A）The router elected as Querier on a LAN.

（B）All routers on a LAN.

（C）All multicast-enabled routers on a LAN.

（D）Only the multicast-enabled hosts on a LAN.

（E）The first host to expire its local suppression timer.

（A）Generate feedback to the network or source

（B）Generate multicast data to the group

（C）Listen for announcements advertising available sessions from the source

（D）Report their multicast group membership to their local router

（E）Signal their local router as they join and leave multicast groups

（A）The PMSI is the interface between the PEs and CEs in an MVPN service.

（B）The PMSI is an overlay broadcast network that interconnects all PEs in an MVPN service.

（C）The PMSI is the GRE tunnel that carries customer multicast traffic across the service provider core network.

（D）The PMSI is the PIM-enabled interface between the PEs in an MVPN service.