3.2 Describe How Multicast Can Affect Wireless Networks 300-430 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which statement correctly describes multicast traffic in an enterprise wireless network?

   • AMulticast delivers data to all devices on the network regardless of whether they requested the traffic.
   • BMulticast requires a separate transmission for each receiver, similar to unicast but with a shared destination address.
   • CMulticast uses a one-to-one delivery model where each frame is sent to a single destination MAC address.
   • DMulticast uses a group address to deliver a single stream of data to multiple receivers that have joined the group.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A retail store uses a wireless network for digital signage. Each screen joins a multicast group to receive advertising content. The network administrator notices that some screens occasionally miss updates. The multicast source is on a wired server. Which factor is most likely contributing to the missed updates?

   • AThe AP is converting multicast to unicast, and the unicast frames are being dropped due to high client count.
   • BThe wireless clients are not sending IGMP membership reports frequently enough, causing the AP to prune the group.
   • CThe screens are associated to different SSIDs, so they cannot receive the same multicast stream.
   • DMulticast frames are sent at a low data rate and are not acknowledged, so they are more likely to be lost due to interference.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A hospital deploys a wireless network for nurses using VoWLAN phones. The phones join a multicast group for push-to-talk. During peak hours, nurses report choppy audio and delayed call setup. The WLC shows high multicast airtime utilization. Which action most directly reduces multicast airtime consumption while preserving the push-to-talk service?

   • AEnable multicast group key management (GKM) to reduce rekey overhead
   • BEnable multicast-to-unicast conversion on the WLAN
   • CIncrease the multicast data rate to the highest basic rate
   • DDisable multicast on the WLAN and use unicast for all push-to-talk traffic
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A company uses a wireless network for a multicast-based software update system. The system sends updates to a group of laptops. The network administrator wants to ensure that the updates are delivered efficiently without overwhelming the wireless medium. Which characteristic of multicast should be considered?

   • AMulticast frames are encrypted individually for each client.
   • BMulticast frames are sent at the highest data rate to maximize throughput.
   • CMulticast uses group addressing, allowing a single frame to be delivered to multiple clients.
   • DMulticast frames are acknowledged by each client, ensuring reliable delivery.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A university library offers a video streaming service to students. The service uses multicast to deliver live lectures. Students report that some clients experience choppy video while others are fine. The network team suspects that multicast frames are being sent at a low data rate. Which configuration change would improve video quality for all clients without breaking the service?

   • ASet the multicast data rate to 54 Mbps
   • BEnable multicast-to-unicast conversion on the WLAN
   • CDisable multicast and use unicast for the streaming service
   • DEnable multicast group key management (GKM)
   Reveal Solution Discussion Select an answer first