3.3 Implement Multicast on a WLAN 300-430 Practice Questions (Page 5)

Questions 21–23

1. 21foundation · easy

   What is a primary challenge when delivering multicast traffic over a WLAN compared to unicast traffic?

   • AMulticast frames are encrypted with a unique key per client, increasing CPU load on the access point.
   • BMulticast frames require a separate acknowledgment from every client, causing immediate retransmissions and high latency.
   • CMulticast frames are typically sent at the lowest basic rate, consuming more airtime and reducing throughput for all clients.
   • DMulticast frames are always forwarded to the wired network, causing unnecessary congestion on the uplink.
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2. 22application · medium

   A small office uses a WLAN for a legacy application that sends periodic broadcast messages to all devices. The network administrator wants to reduce the impact of these broadcasts on wireless performance. Which approach should they take?

   • AEnable multicast-to-unicast conversion for the broadcast traffic
   • BIncrease the broadcast data rate to reduce airtime
   • CConvert the broadcast traffic to multicast and enable IGMP snooping
   • DDisable broadcast forwarding on the WLC
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3. 23foundation · easy

   Which configuration step is required to enable multicast on a Cisco wireless LAN controller for a specific WLAN?

   • AConfigure a multicast group address on the WLAN and assign it to the access points.
   • BEnable multicast on the switch ports that connect to the access points.
   • CSet the multicast data rate to a specific value in the WLAN's QoS profile.
   • DEnable multicast in the WLAN's advanced settings and configure IGMP snooping globally.
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