Cisco Certified Internetwork Expert (CCIE) Practice Test 2026 – Your Complete All-in-One Guide to Exam Success!

The function of a wireless LAN controller primarily revolves around managing and coordinating the operation of multiple access points within a network. It plays a crucial role in centralized management, ensuring that access points are configured consistently and efficiently. The correct choice refers to the wireless LAN controller's capability to forward configurations and information about attacks, which is essential for maintaining network security and performance.

By sending configurations to access points, the wireless LAN controller ensures that all devices operate under the same policy framework, which includes security settings and network parameters. Furthermore, it can collect data regarding attacks or network issues and relay this information between access points. This tight integration allows for a more robust response to potential threats and helps in mitigating risks across the entire wireless network.

The other choices imply functions that, while important in network management, do not specifically capture the primary role of a wireless LAN controller. For instance, providing guest access involves additional processes and systems outside the core responsibilities of a controller. Similarly, while packet capturing is useful for forensic analysis, it is not the primary function of a wireless LAN controller. Managing mobility involves more complex routing and switching functions that extend beyond the immediate duties of the controller, which primarily focuses on configuration and control rather than direct data handling or user session mobility.