An enterprise organization is seeking to improve the performance and manageability of their current network which encompasses multiple access switches connecting to various departments. They want to implement a layer that aggregates the traffic from these switches before it moves to the core layer. Which device should be recommended for deployment at this layer to meet their requirements?
Add an access point for the distribution/aggregation layer.
Deploy a multilayer switch at the distribution/aggregation layer.
Install an unmanaged switch at the distribution/aggregation layer.
Integrate a firewall into the distribution/aggregation layer.