300-430 Question 55
Select 2An enterprise network administrator is tasked with implementing QoS for wireless clients in a high-density environment to prioritize voice traffic over other types of traffic. Which of the following steps should the administrator take to ensure appropriate QoS settings are applied?
- A
Enable Wi-Fi Multimedia (WMM) on the WLAN to classify and prioritize voice traffic.
- B
Configure the QoS profiles to map voice traffic to the Best Effort (BE) queue.
- C
Set the SSID QoS profile to Platinum to prioritize real-time applications like VoIP.
- D
Disable QoS settings on the WLAN since wireless clients dynamically adjust traffic priorities.
- E
Apply Access Control Lists (ACLs) to block non-voice traffic from accessing the WLAN.
Show answer and explanation
Correct answers: A, C
Explanation
To implement QoS for wireless clients, enabling Wi-Fi Multimedia (WMM) is necessary to classify and prioritize traffic, while setting the SSID QoS profile to Platinum ensures that voice traffic is treated with the highest priority. These steps optimize the network for real-time traffic like VoIP, ensuring quality and reliability in high-density environments.
- A. Correct.
Enabling Wi-Fi Multimedia (WMM) is essential for QoS in wireless networks, as it allows traffic classification and prioritization based on traffic types such as voice, video, and best effort.
- B. Incorrect.
Configuring the QoS profiles to map voice traffic to the Best Effort (BE) queue is incorrect because the BE queue is not appropriate for latency-sensitive traffic like voice.
- C. Correct.
Setting the SSID QoS profile to Platinum ensures that voice traffic is given the highest priority, which is critical for real-time applications such as VoIP.
- D. Incorrect.
Disabling QoS settings on the WLAN is incorrect because it would prevent any prioritization of traffic, leading to potential performance issues for latency-sensitive applications.
- E. Incorrect.
Applying Access Control Lists (ACLs) to block non-voice traffic is not a recommended approach for QoS as it may unnecessarily restrict other essential traffic rather than prioritizing voice traffic.