200-301 Question 255
Select 2A network administrator is configuring a new wireless LAN (WLAN) on a Cisco Wireless LAN Controller (WLC). They need to ensure the WLAN is properly secured and optimized for VoIP traffic. Which two steps should the administrator take during the WLAN configuration process?
- A
Enable WPA2 or WPA3 encryption in the WLAN security settings.
- B
Set the QoS profile to 'Platinum' for prioritizing voice traffic.
- C
Disable SSID broadcasting to improve security.
- D
Assign the WLAN to the 'Best Effort' QoS profile for balanced performance.
- E
Configure 802.11r (Fast Transition) for seamless roaming.
Show answer and explanation
Correct answers: A, B
Explanation
To properly configure a WLAN for VoIP traffic, the administrator should enable robust encryption (WPA2 or WPA3) to secure the network and select the 'Platinum' QoS profile to prioritize voice traffic. These steps ensure both security and optimal performance for VoIP applications. Other options, such as disabling SSID broadcasting or using 'Best Effort' QoS, are either outdated practices or not suitable for voice traffic prioritization.
- A. Correct.
WPA2 or WPA3 encryption is essential to secure the WLAN and protect data transmitted over the network. This is a best practice to ensure robust security.
- B. Correct.
The 'Platinum' QoS profile is specifically designed for voice traffic, ensuring it receives the highest priority and reducing latency for VoIP applications.
- C. Incorrect.
Disabling SSID broadcasting is not a recommended security measure in modern networks, as it does not effectively prevent attacks and can complicate client connectivity.
- D. Incorrect.
'Best Effort' QoS does not prioritize voice traffic, which may result in poor performance for VoIP applications. 'Platinum' should be used instead for voice.
- E. Incorrect.
While 802.11r (Fast Transition) is useful for seamless roaming, it is not directly related to securing the WLAN or optimizing QoS for voice traffic in this scenario.