Which function is performed by the network control plane?
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Correct answer: Exchanges topology information with other routers..
Why this is the answer
The control plane is responsible for exchanging routing information and building the routing tables (RIBs) that direct traffic. Routers use protocols like OSPF or EIGRP to exchange topology information, allowing them to learn about network paths and calculate the best routes. This exchange is a core function of the control plane. Looking up an egress interface in the forwarding information base (FIB) and forwarding traffic to the next hop are functions of the data plane (or forwarding plane). The data plane uses the information built by the control plane to actually move packets. Providing CLI access is a management plane function, allowing administrators to configure and monitor the device.
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