3.1 Implement Multicast Components 300-430 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A hospital is deploying a wireless network for a telemedicine application. The application sends multicast video from a doctor's workstation to a group of nurses' tablets. The network administrator needs to ensure that the tablets only receive video from the doctor's workstation and not from any other potential multicast source on the same group address. The wired network uses IGMPv3. Which configuration is required on the wireless infrastructure to enforce this source filtering?

   • AEnable IGMPv3 snooping on the WLC and access points
   • BConfigure the WLC to use IGMPv2 for all wireless multicast groups
   • CEnable multicast direct and set the multicast group address to a unicast address
   • DDisable IGMP snooping and rely on the multicast router to filter traffic
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   What is the purpose of multicast direct (also known as multicast in the AP) on a Cisco wireless LAN controller?

   • ATo convert multicast frames to unicast frames at the controller before sending them to the access point.
   • BTo disable IGMP snooping on the access point to allow all clients to receive multicast.
   • CTo increase the multicast data rate to the highest rate supported by the access point.
   • DTo allow the access point to forward multicast frames directly to clients without sending them to the controller first.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A stadium is deploying a wireless network for a mobile app that delivers live video to attendees' smartphones. The video is multicast from a server on the wired network. The network administrator is concerned about the reliability of multicast over Wi-Fi because multicast frames are not acknowledged. Which technique can be configured on the WLC to improve reliability for the wireless clients?

   • AConfigure the multicast group to use a unicast MAC address
   • BDisable IGMP snooping to allow all clients to receive the multicast
   • CEnable multicast-to-unicast conversion
   • DIncrease the multicast data rate to the maximum supported rate
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   How does IGMP snooping on an access point (AP) improve multicast delivery in a wireless network?

   • AThe AP sends IGMP queries to the multicast router on behalf of all clients.
   • BThe AP forwards multicast frames only to wireless clients that have sent an IGMP membership report for that group.
   • CThe AP converts multicast frames to broadcast frames to ensure all clients receive them.
   • DThe AP drops all multicast frames that are not addressed to the AP's own MAC address.
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6. 10application · medium

   A company deploys a new multicast application for software updates. The application sends to multicast group 239.1.2.3. The network administrator notices that some wireless clients are not receiving the updates even though they are connected to the WLAN. The WLC has IGMP snooping enabled. What is the most likely reason for the issue?

   • AThe multicast group address is not in the range reserved for local network multicast.
   • BThe WLC is not configured as an IGMP querier.
   • CThe clients are not sending IGMP membership reports for the group.
   • DThe multicast MAC address is incorrect for the group.
   Reveal Solution Discussion Select an answer first