3.2 Describe How Multicast Can Affect Wireless Networks 300-430 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which scenario is a typical use case for multicast in an enterprise wireless network?

   • ATransferring a file from a laptop to a network-attached storage device using SMB.
   • BSending an email from one employee to another employee over the wireless network.
   • CStreaming a live video presentation to a group of employees who have joined the multicast group.
   • DPerforming a DNS query from a wireless client to a local DNS server.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A hospital uses a wireless network for a multicast-based patient monitoring system. The system sends alerts to nurses' mobile devices. The network administrator wants to ensure that only devices that need the alerts receive them, to reduce unnecessary traffic. Which configuration should be used?

   • ADisable IGMP snooping to allow all multicast to be forwarded.
   • BEnable IGMP snooping on the WLC and switches.
   • CEnable multicast-to-unicast conversion on the WLC.
   • DIncrease the multicast data rate to reduce airtime.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A hospital deploys a wireless network for clinical staff. The network carries live video from a training session to 30 iPads in a conference room. The video is sent as multicast. Staff report that the video is choppy and delays are noticeable. The WLC is configured with default multicast settings. What is the most likely cause of the choppy video?

   • AMulticast frames are sent at a low mandatory data rate without retries, consuming excessive airtime and causing delays.
   • BThe AP is unicasting each multicast frame individually to each of the 30 iPads, overwhelming the wireless medium.
   • CThe WLC is encrypting multicast frames with a different key than unicast, causing decryption delays on the iPads.
   • DThe iPads are not sending IGMP joins, so the AP drops the multicast traffic before it reaches the wireless medium.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A logistics company uses a wireless network for handheld scanners. The scanners receive multicast messages for inventory updates. The network admin notices that multicast frames are being sent at a low data rate, causing high airtime usage. The admin wants to reduce airtime while ensuring that all scanners receive the updates. Which action should the admin take?

   • ADisable multicast and use broadcast for the updates
   • BEnable multicast-to-unicast conversion on the WLAN
   • CEnable multicast group key management (GKM)
   • DIncrease the multicast data rate to the highest supported rate
   Reveal Solution Discussion Select an answer first
6. 10expert · hard

   A company has a wireless network with a mix of legacy and modern clients. They use multicast for software updates. The network team wants to reduce airtime consumption while ensuring all clients receive the updates. They are considering multicast-to-unicast conversion, increasing the multicast rate, or using multicast rate optimization. Which approach is most appropriate?

   • ADisable multicast and use broadcast for the updates
   • BIncrease the multicast data rate to a rate that all clients can support
   • CUse multicast rate optimization to dynamically adjust the rate based on client capabilities
   • DEnable multicast-to-unicast conversion for all clients
   Reveal Solution Discussion Select an answer first