Network layer: data plane, control plane $-$ match the cor

$[$ Choose$]$

determines how datagram is routed among routers along end$-$end path from source host to destination host

Control Plane a routing algorithm runs in each and every router and both forwarding and routing functions are contained within a router.

$$ determines how datagram a diving on router input port is forwarded to router output port

a remote controller computes and distributes forwarding tables

Data plane

determines how datagram is $r$

Traditional routing algorithms $$

Logically centralised control plane

determines how datagram is $r$