Multicast POWERSWITCH-DATA-CENTER-DEPLOY Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A network engineer is troubleshooting a multicast issue where receivers are not receiving video from a source. The Dell OS10 switch shows IGMP snooping is enabled, but the multicast traffic is not being forwarded to the receiver's port. The receiver is sending IGMP reports. What is the most likely cause?

   • AThe multicast source is sending to a group outside the 224.0.0.0/4 range.
   • BThe receiver is using IGMPv3 but the switch is configured for IGMPv2.
   • CPIM is not enabled on the switch's uplink interface.
   • DThe multicast router port is not configured or detected on the switch.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A Dell OS10 switch is configured as a PIM router in a multicast network. The administrator needs to verify that PIM is enabled on a specific interface and that the interface is operational for multicast routing. Which command should be used?

   • Ashow ip igmp interface
   • Bshow ip pim interface
   • Cshow ip route
   • Dshow ip pim rp mapping
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A network engineer is designing a multicast network for a large enterprise. The network has a mix of dense and sparse multicast groups. The engineer wants to use a single PIM mode that can handle both types efficiently. What should the engineer configure?

   • APIM dense-mode for all groups.
   • BPIM sparse-mode with a static RP for all groups.
   • CPIM sparse-dense mode on all interfaces.
   • DPIM sparse-mode with a static RP for sparse groups and PIM dense-mode for dense groups.
   Reveal Solution Discussion Select an answer first
5. 9expert · medium

   A service provider runs PIM sparse-mode with a static RP. A new multicast source begins sending to group 239.100.1.1. The first-hop router sends a Register message to the RP, but the RP does not create an (S,G) entry. What is the most likely cause?

   • AThe RP is not receiving the Register message due to a unicast routing issue.
   • BThe RP has PIM disabled on the interface facing the first-hop router.
   • CThe group 239.100.1.1 is not within the RP's configured group range.
   • DThe first-hop router is not the DR for the source's segment.
   Reveal Solution Discussion Select an answer first
6. 10expert · medium

   A network administrator is troubleshooting a multicast issue on a Dell OS10 switch. The switch is receiving IGMP reports from receivers, but multicast traffic is not being forwarded to them. The 'show ip igmp snooping groups' command shows the groups are learned. What should the administrator check next?

   • ACheck if PIM is enabled on the switch's uplink interface.
   • BVerify the multicast source is sending traffic to the group.
   • CCheck if the receivers are using IGMPv3 with source-specific requests.
   • DVerify the multicast router port is correctly identified on the switch.
   Reveal Solution Discussion Select an answer first