How does a Cisco Unified Wireless Network respond to Wi-Fi channel (CCNA 200-301)

Correct answer: C. It analyzes client load and background noise and dynamically assigns a channel.
Here's why:
A. It allows the administrator to assign the channels on a per-device or per-interface basis. While this is true, Cisco Unified Wireless Network goes beyond manual configuration and offers dynamic channel assignment for better optimization.
B. It segregates devices from different manufactures onto different channels. Cisco Unified Wireless Network focuses on signal strength and overall network health, not device manufacturer.
C. It analyzes client load and background noise and dynamically assigns a channel. This is a core function of Cisco Unified Wireless Network's Dynamic Channel Assignment (DCA) feature. It continuously evaluates network conditions and assigns optimal channels to access points to minimize overlap and improve performance.
D. It alternates automatically between 2.4 GHz and 5 GHz on adjacent access points. While Cisco access points can utilize both bands, DCA considers factors beyond just frequency bands for optimal channel selection.
Cisco Unified Wireless Network also leverages other techniques to manage channel overlap, including:

Neighboring Access Point (NAP) communication: Access points share information about neighboring networks, allowing for channel selection that minimizes interference.
Radio Resource Management (RRM): Optimizes radio resource allocation based on real-time network conditions, potentially including channel adjustments.