300-425 Question 249
Single answerA network administrator is deploying a new Cisco wireless network and needs to configure a Wireless LAN Controller (WLC) for seamless client roaming between access points. The network will support voice applications that require low latency and minimal packet loss during handoffs. Which WLC feature should the administrator enable to achieve this requirement?
- A
Fast Transition (802.11r)
- B
Client Load Balancing
- C
CleanAir
- D
Band Steering
Show answer and explanation
Correct answer: A
Explanation
Fast Transition (802.11r) is specifically designed to improve client mobility by reducing the time required for authentication during roaming. This is critical for ensuring smooth handoffs in applications like voice and video, which are sensitive to latency and packet loss. Other options, such as Client Load Balancing and CleanAir, target different aspects of wireless performance and do not directly address the requirement for seamless roaming.
- A. Correct.
Fast Transition (802.11r) enables seamless and fast roaming for clients, making it essential for applications like voice, which require minimal latency and packet loss.
- B. Incorrect.
Client Load Balancing helps distribute clients across access points to optimize network performance but does not address seamless roaming or low latency for voice applications.
- C. Incorrect.
CleanAir is a feature that identifies and mitigates RF interference but is unrelated to client roaming or voice application requirements.
- D. Incorrect.
Band Steering encourages clients to use the 5 GHz band for better performance but does not ensure seamless roaming or low latency for voice applications.