Certified Wireless Design Professional (CWDP) Practice Exam

In a WLAN that employs centralized forwarding, a critical LAN requirement is high-speed Ethernet links. This is essential because centralized forwarding involves directing traffic from the wireless access points to a central location, typically a controller or a server, where the actual data traffic is managed and processed.

High-speed Ethernet links ensure that there is sufficient bandwidth to handle the aggregated data traffic from multiple access points. When numerous devices are connected wirelessly and communicating through a centralized controller, the demand for bandwidth increases. If the links are not high-speed, they may become bottlenecks, leading to reduced performance, increased latency, and a poor user experience.

Moreover, high-speed Ethernet supports efficient communication and minimizes delays in data transfer, allowing for smooth operation of services such as voice over IP (VoIP) or video conferencing, which require reliable and fast connections. In contrast, low-speed links would struggle to accommodate the data demands, while routing redundancy protocols and Layer 3 specifications are more related to network reliability and design rather than the immediate transmission capacity and performance requirements posed by centralized forwarding.