2.2 Implement QoS for Wireless Clients 300-430 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A law firm has a guest Wi-Fi network. The partners want to ensure that video conferencing from guest devices is prioritized over general web browsing, but they also want to limit each guest to 2 Mbps to prevent abuse. What is the best configuration?

   • ASet the WLAN to 'platinum' QoS and rely on the access point to enforce the 2 Mbps limit.
   • BCreate an application-based QoS policy that prioritizes video conferencing and apply a per-client bandwidth limit of 2 Mbps.
   • CUse a WLAN ACL to block video conferencing and allow only web browsing.
   • DApply a per-client bandwidth limit of 2 Mbps and enable WMM with DSCP trust.
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2. 12application · medium

   A warehouse uses Wi-Fi for handheld scanners and voice-picking headsets. The headsets use a proprietary voice protocol that does not support DSCP. The scanners generate small, frequent data packets. The administrator wants to ensure voice is prioritized without delaying scanner data. What is the best approach?

   • AEnable WMM and trust DSCP markings from all devices.
   • BCreate a QoS policy that matches the headsets' MAC addresses and assigns their traffic to the voice queue.
   • CDisable WMM and rely on the access point to prioritize voice based on packet size.
   • DSet the WLAN to 'platinum' QoS to prioritize all traffic.
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4. 13application · medium

   A hotel guest reports that video calls are choppy on the Wi-Fi, but web browsing is fine. The WLC is AireOS. The administrator checks the WLAN QoS profile and sees WMM is enabled. What should the administrator do next to diagnose the issue?

   • AReboot the access point to clear any QoS queue congestion.
   • BDisable WMM on the WLAN to simplify the QoS behavior.
   • CIncrease the WLAN's QoS profile to 'platinum' to give all traffic higher priority.
   • DCheck the client's DSCP markings and verify that the WLC is mapping them to the correct WMM queue.
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5. 14foundation · easy

   On a Cisco wireless LAN controller, which configuration step is required to enable WMM for a WLAN?

   • AEnable WMM under the WLAN's QoS settings
   • BEnable WMM on the access point's radio settings
   • CEnable WMM globally on the controller's system settings
   • DEnable WMM on the switch port connecting to the access point
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6. 15expert · hard

   A company's wireless network carries both critical business applications and non-critical internet traffic. The network team has configured an application-based QoS policy that marks the critical business application traffic with DSCP AF41. However, they notice that the non-critical traffic is also being marked with AF41, causing it to be prioritized. The non-critical traffic is from a web-based application that uses the same TCP port as the critical business application. What is the most likely cause of this issue?

   • AThe controller is not configured to trust DSCP markings, so it is re-marking all traffic with AF41.
   • BThe non-critical application is actually using the same application signature as the critical application.
   • CThe WLAN is configured with a QoS profile that sets all traffic to AF41.
   • DThe application-based QoS policy is using a port-based classification, which is matching both the critical and non-critical applications that use the same port.
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