A wireless engineer is designing a wireless network to support real-time applications over wireless. Which IEEE protocol must the engineer enables on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?
The IEEE 802.11r protocol, also known as Fast BSS Transition (FT), is designed to support real-time applications by enabling faster roaming between APs. This protocol reduces the number of packets exchanged during the reauthentication process when a client moves from one AP to another, thus ensuring a more seamless transition and maintaining the quality of service required by real-time applications such as voice and video conferencing.Reference: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-425)

An engineer must perform a predictive wireless survey to indicate the number of access points required. The engineer has created a new project and imported the floor plan. Which step must be taken next for accurate AP placement?
Refer to the exhibit.

A client roams between two APs that are registered to two different controllers, where
each controller has an interface in the client subnet. Both controllers are running AireOS. Which scenario explains the client roaming behavior?
When a client roams between two access points (APs) that are registered to different controllers with interfaces in the same client subnet, the controllers will exchange mobility control messages over UDP port 16666. This is in accordance with the Designing Cisco Enterprise Wireless Networks (ENWLSD) guidelines. The purpose of these messages is to ensure seamless roaming, where the client's session and authentication state are transferred from one controller to another without requiring re-authentication or re-association by the client. The mobility control messages facilitate the coordinated transfer of the client database entry from the original controller to the new one, maintaining a consistent experience for the user.


During a wireless site survey for a hospital, the client requires seamless roaming for VoWi-Fi
handsets. Which design factor is most critical to ensure high-quality voice roaming?
Which type of wireless survey involves physically walking the site and measuring signal strength
in real time with APs powered on?
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