In enterprise networks, WLANs are most commonly deployed at which architectural layer to serve end-user connectivity?

• A. Core layer
• B. Distribution layer
• C. Access layer
• D. Data Center layer

Answer: (C)

WLANs provide direct connectivity for end-user devices, so they sit at the access layer in a typical enterprise network design. The access layer is where endpoints—wired or wireless—first connect to the network. Wireless Access Points connect to access switches, and those switches deliver initial security, QoS, and policy enforcement at the edge. The distribution layer then aggregates multiple access-layer blocks and handles policy and inter-VLAN routing, while the core acts as the high-speed backbone between distribution blocks. The data center layer is focused on servers and storage within data centers. Since WLANs are all about giving users access to the network, placing them at the access layer is the most appropriate and common approach.