Which network plane is centralized and manages routing decisions?

The control plane is responsible for making forwarding decisions, building routing tables, and managing network topology information. It's centralized in the sense that it dictates how data should flow through the network. For example, routing protocols like OSPF and EIGRP operate within the control plane to exchange routing information and determine the best paths. The data plane (or forwarding plane) is where the actual data packets are forwarded based on the decisions made by the control plane. The management plane is used for monitoring, configuring, and managing network devices. The term "policy plane" is not a standard network plane in the same context as control, data, and management planes; policies are typically implemented and enforced by the control and management planes.