单选题Multicast is being deployed in the network， and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast， the network monitoring tools show periodic spikes in link utilization throughout the network， even in areas where the video application is not being used. What could be a possible cause？（）APIM sparse mode is being used.BPIM dense mode is being used.CThe BGP multicast address family has not been configured.DIGMP version 3 is being used.EIP PIM neighbor filters have not been applied.
单选题
Multicast is being deployed in the network， and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast， the network monitoring tools show periodic spikes in link utilization throughout the network， even in areas where the video application is not being used. What could be a possible cause？（）
A
PIM sparse mode is being used.
B
PIM dense mode is being used.
C
The BGP multicast address family has not been configured.
D
IGMP version 3 is being used.
E
IP PIM neighbor filters have not been applied.
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Refer to the network of Layer 3 switches in the exhibit. The RPI Multi cast Server only multicasts to hosts connected to multilayer switches 5 and 6. The CMU Multicast Server multicasts to hosts on multilayer switches 1 - 6. Given the number of configuration steps involved, what is the most efficient way to configure the net work while meeting the requirements for multicast data flow? （）A. Configure each switch with PIM sparse mode and a separate instance of PIM dense mode.Specify switch 1 as the root for the RPI Multicast Server. Specify switch 2 as the root for the CMU Multicast Server.B. Configure each switch with PIM sparse mode and a separate instance of PIM dense mode. Leave each multicast server as the root of its own multicast tree.C. Configure each switch with PIM sparse - dense mode. Configure switch 3 as a ren dezvous point for the RPI multicast stream.D. Configure each switch with PIM sparse mode and a separate instance of PIM dense mode.Allow the switches to elect their own root for each multicast tree.E. Configure each switch with PIM sparse mode.F. Configure each switch with PIM dense mode.
When IP multicast is enabled via PIM, which mode uses the flood and prune metho d? Select the best response.() A. PIM sparse - denseB. Bidir - PIMC. PIM - RPD. PIM - DME. PIM - SM
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Choose two commands that are required to enable multicast on a router， when it is known that thereceivers use a specific functionality of IGMPv3.（）A、ip pim rp-addressB、ip pim ssmC、ip pim sparse-modeD、ip pim passive
Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）A、The multicast sources must register with the RP to form the multicast distribution tree.B、An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).C、The multicast receivers must register with the RP to form the multicast distribution tree.D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).E、An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
Which command can be used to check the assignment of RPs to multicast groups？（）A、show ip pim rendez-vousB、show ip rpf rp mappingC、show ip pim rp mappingD、show ip pim rp infoE、show ip pim
What is the default behaviour of PIM-SSM If there are multiple equal-cost paths to the multicast source？（）A、It will send the join only to the neighbor with the highest IP address.B、It will send the join only to the neighbor with the lowest IP address.C、It will send the join in a round-robin fashion across all neighbors.D、It will send the join to all neighbors.
When building an IP multicast domain using PIM which mode assumes that other routers do not want to forward multicast packets for the group?（）A、PIM - DMB、PIM - SMC、PIM - RPD、CGMPE、IGMP snooping
Which three statements are true about IP multicast configuration?（）A、PIM sparse - dense mode and PIM dense mode require an RP on the network.B、PIM sparse mode and PIM dense mode require an RP on the network.C、PIM sparse mode interfaces are always added to the multicast routing table in a router.D、PIM sparse mode and PIM sparse - dense mode require an RP on the network.E、PIM dense mode interfaces are always added to the multicast routing table in a router.F、PIM sparse - dense mode acts as PIM dense mode if an RP is not known.
Which two statements are tru e about the rendezvous point (RP) in a multicast network?（）A、The multicast sources must register with the RP to form the multicast distribution treeB、An RP is required only in networks running Protocol Independent Multicast dense mode ( PIM DM)C、The multicast receivers must register with the RP to form the multicast distribution treeD、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM)E、An RP is required only in networks running Pro tocol Independent Multicast sparse - dense mode (PIM - SDM)F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP
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Multicast is being deployed in the network， and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast， the network monitoring tools show periodic spikes in link utilization throughout the network， even in areas where the video application is not being used. What could be a possible cause？（）A、PIM sparse mode is being used.B、PIM dense mode is being used.C、The BGP multicast address family has not been configured.D、IGMP version 3 is being used.E、IP PIM neighbor filters have not been applied.
When IP multicast is enabled via PIM, which mode uses the flood and prune metho d? Select the best response.（）A、PIM sparse - denseB、Bidir - PIMC、PIM - RPD、PIM - DME、PIM - SM
Which of these statements about PIM join messages in classic PIM-SM is correct？（）A、PIM join messages are sent every 60 seconds to refresh the upstream router’s mroute state for the multicast tree.B、Routers send a PIM join acknowledgement in response to each PIM join message received from a downstream router.C、PIM join messages are only sent when the multicast distribution tree is first being established.D、PIM join messages are sent every three minutes to refresh the upstream router’s mroute state for the multicast tree.
Which two commands are required to enable multicast on a router， knowing that the receivers only support IGMPv2？（）A、ip pim rp-addressB、ip pim ssmC、ip pim sparse-modeD、ip pim passive
Which two of these are characteristics of multicast routing？ （）A、 multicast routing uses RPFB、 multicast routing is connectionless.C、 In multicast routing， the source of a packet is known.D、 When network topologies change， multicast distribution trees are not rebuilt， but use the originalpathE、 Multicast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destination
What is the benefit of using Anycast RP via RFC 4610 for IP multicast RP redundancy？（） A、 Improves convergence of the multicast network due to enhanced RPF checksB、 Simplifies the number of control plane protocols over other RP redundancy methodsC、 Eliminates the use of Protocol Independent Multicast （PIM） in the topologyD、 Increases the administrative distances in Multicast Source Discovery Protocol （MSDP） configuration
Which two statements are true about the rendezvo us point (RP) in a multicast network?（）A、The multicast sources must register with the RP to form the multicast distribution tree.B、An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).C、The mu lticast receivers must register with the RP to form the multicast distribution tree.D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).E、An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
多选题Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）AThe multicast sources must register with the RP to form the multicast distribution tree.BAn RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).CThe multicast receivers must register with the RP to form the multicast distribution tree.DAn RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).EAn RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).FTo form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
单选题What is the default behaviour of PIM-SSM If there are multiple equal-cost paths to the multicast source？（）AIt will send the join only to the neighbor with the highest IP address.BIt will send the join only to the neighbor with the lowest IP address.CIt will send the join in a round-robin fashion across all neighbors.DIt will send the join to all neighbors.
多选题Which two commands are required to enable multicast on a router， knowing that the receivers only support IGMPv2？（）Aip pim rp-addressBip pim ssmCip pim sparse-modeDip pim passive
单选题What is the benefit of using Anycast RP via RFC 4610 for IP multicast RP redundancy？（）A Improves convergence of the multicast network due to enhanced RPF checksB Simplifies the number of control plane protocols over other RP redundancy methodsC Eliminates the use of Protocol Independent Multicast （PIM） in the topologyD Increases the administrative distances in Multicast Source Discovery Protocol （MSDP） configuration
单选题Which command can be used to check the assignment of RPs to multicast groups？（）Ashow ip pim rendez-vousBshow ip rpf rp mappingCshow ip pim rp mappingDshow ip pim rp infoEshow ip pim
单选题Which of these statements about PIM join messages in classic PIM-SM is correct？（）APIM join messages are sent every 60 seconds to refresh the upstream router’s mroute state for the multicast tree.BRouters send a PIM join acknowledgement in response to each PIM join message received from a downstream router.CPIM join messages are only sent when the multicast distribution tree is first being established.DPIM join messages are sent every three minutes to refresh the upstream router’s mroute state for the multicast tree.
多选题Which two statements are true about the rendezvo us point (RP) in a multicast network?（）AThe multicast sources must register with the RP to form the multicast distribution tree.BAn RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).CThe mu lticast receivers must register with the RP to form the multicast distribution tree.DAn RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).EAn RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).FTo form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
多选题Which two of these are characteristics of multicast routing？ （）Amulticast routing uses RPFBmulticast routing is connectionless.CIn multicast routing， the source of a packet is known.DWhen network topologies change， multicast distribution trees are not rebuilt， but use the originalpathEMulticast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destination
多选题Which three statements are true about IP multicast configuration?（）APIM sparse - dense mode and PIM dense mode require an RP on the network.BPIM sparse mode and PIM dense mode require an RP on the network.CPIM sparse mode interfaces are always added to the multicast routing table in a router.DPIM sparse mode and PIM sparse - dense mode require an RP on the network.EPIM dense mode interfaces are always added to the multicast routing table in a router.FPIM sparse - dense mode acts as PIM dense mode if an RP is not known.