1)Router operates in which layer of OSI Reference Model?
Layer 4 (Transport Layer)
Layer 3 (Network Layer)
Layer 1 (Physical Layer)
Layer 7 (Application Layer)
The Application layer, layer 7, is the closest to the user. Hubs, switches, and routers operate at the lowest three layers of the OSI network model:
Router works at Layer 3 ( NETWORK LAYER )
Router operates in layer 3(network layer).router is a device that checks packets IP address at input interface and routes them to interface connected to destination network if available.
Router is a device that give route to data which is only possible with IP and IP communication is layer 3 so thats the way router works on layer 3 of OSI model.
layer 3(network layer)