In multicast network how to select DR？ and what is the order？
In multicast network how to select DR？ and what is the order？
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A multicast router may receive thousands of multicast(71)every day for different groups. If a router has no knowledge about the membership status of the(72), it must broadcast all of these packets. This creates a lot of traffic and consumes(73). A better solution is to keep a list of groups in the network for which there is at least one loyal member.(74)helps the multicast router create and update this list. For each group, there is one router that has the duty of distributing the(75)packets destined for that group. This means that if there are three multicast routers connected to a network, their lists of groupids are mutually exclusive. A host or multicast router can have membership in a group.A．packetsB．errorsC．reportsD．alarms
Which two multicast protocol statements are true?() A. Sparse mode multicast uses a pull model to send multicast traffic to where it is requestedB. Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficC. Dense mode multicast requires explicit join messa ges from their membersD. Sparse mode uses reverse path forwarding (RPF) to prune off redundant flowsE. The primary use of sparse mode multicast is for test labs and router performance testing
Refer to the exhibit. IP multicast for group address 224.1.1.1 has been enabled on all router s in the network. Hosts on Network A receive the multicast traffic. However, hosts on Network B do not. On the basis of outputs provided, what could be the cause of the problem? （）A. The route to 224.69.15.0/24 will be out Ethernet 0B. The reverse path forwarding (RPF) for the route 224.2.0.1 failed to find the interface on which the multicast packet was rece ivedC. Multicast route to 224.69.15.0/24 was added to the mroute table and created by a source directly connected to the routerD. Multicast route to 10.16.0.0/16 was added to the mroute table and created by a source directly connected to the routerE. This router received an IGMP host report from a group member or a PIM join message
How are VTP advertisements delivered to switches across the network?() A.anycast framesB.multicast framesC.broadcast framesD.unicast frames
How are VTP advertisements delivered to switches across the network?（）A、anycast framesB、multicast framesC、broadcast framesD、unicast frames
Which three IP multicast address related statements are true?（）A、Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3B、Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget herC、Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1D、Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routersE、The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addressesF、Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
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 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 three IP multicast address related statements are true？ （Choose three.） （） A、Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live （TTL） greater than 1.B、Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers.C、Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link-local addresses used by PIMv2 and IGMPv3.D、Because they would map to overlapping IP multicast MAC addresses， multicast addresses 224.0.1.1 and 238.1.1.1 could not be used together.E、Multicast address 224.0.1.1 has been reserved for the Network Time Protocol （NTP） by the IANAF、The administratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses.
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
In a ZXMP M800 system using 100M monitoring, the order-wire and protection switching commands are delivered to related network elements of multicast groups. Each system has a maximum of （）multicast groups.A、1B、2C、3D、4
Which two restrictions must the Enterprise Campus network designer consider when evaluatingWAN connectivity options？ （）A、 OSPF over multicast EMS or VPLS network may not have consistent broadcast or multicastperformanceB、 IP multicast is not supported over Lover 3 MPLS VPN； instead a Layer 2 MPLS WN must beutilized with service provider supportC、 QoS requirements with MPLS-VPN must be implemented by the service providerD、 Hierarchical VPLS designs are the least scalableE、 IGMP snooping is not on option with VPLS or EMS； instead administrative scoping or allowingsufficient bandwidth for unnecessary multicast traffic at the edge links is required
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.
In a run sparse-dense-mode multicast network， when rendezvous point down ， will the recipient receive the packets send by the source？why？
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
Which three IP multicast related statements are true？ （Choose three.） （）A、 Multicast addresses 224.0.1.0 through 238.255.255.255 are called globally scoped addresses. They are used to multicast data between organizations and across the InternetB、 The multicast address 224.0.0.1 is a globally scoped address that has been reserved for the Network Time Protocol （NTP） by the IANAC、 Multicast addresses 239.0.0.0 through 239.255.255.255 are called limited scope addresses. They are constrained to a local group or organizationD、 Multicast addresses 224.0.0.5 and 224.0.0.6 are limited scoped addresses that have been reserved for OSPFE、 Multicast addresses 224.0.0.0 through 224.0.0.255 are used for network protocols on local LAN segments. Because they are always transmitted with a Time to Live （TTL） of 1， they are never forwarded by a router
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 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
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 restrictions must the Enterprise Campus network designer consider when evaluatingWAN connectivity options？ （）AOSPF over multicast EMS or VPLS network may not have consistent broadcast or multicastperformanceBIP multicast is not supported over Lover 3 MPLS VPN； instead a Layer 2 MPLS WN must beutilized with service provider supportCQoS requirements with MPLS-VPN must be implemented by the service providerDHierarchical VPLS designs are the least scalableEIGMP snooping is not on option with VPLS or EMS； instead administrative scoping or allowingsufficient bandwidth for unnecessary multicast traffic at the edge links is required
多选题Which two multicast protocol statements are true？ （Choose two.） （）ADense mode multicast requires explicit join messages from their members.BDense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic.CSparse mode multicast uses a pull model to send multicast traffic to where it is requested.DSparse mode uses reverse path forwarding （RPF） to prune off redundant flows.EThe primary use of sparse mode multicast is for test labs and router performance testing.
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 two multicast protocol statements are true?（）ASparse mode multicast uses a pull model to send multicast traffic to where it is requestedBDense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficCDense mode multicast requires explicit join messa ges from their membersDSparse mode uses reverse path forwarding (RPF) to prune off redundant flowsEThe primary use of sparse mode multicast is for test labs and router performance testing
问答题In a run sparse-dense-mode multicast network， when rendezvous point down ， will the recipient receive the packets send by the source？why？