Network Layer - Does path determination and logical addressing.
Router works in Network Layer of OSI model
All layers - but to the greatest extent, the distinctive work done by the router - specifically, routing packets - corresponds to layer 3.
Assuming you are using the OSI Modem a router sits on Layer 3: Network
application
Application Layer
7 - application
presentation layer
Router is a Layer 3 (Network Layer)device that checks packet's IP Address at input interface & routes them to interface connected to destination network if available.
Data Link Layer
The OSI layer that moves bits between devices is the Physical layer, which is the first layer of the OSI model. It is responsible for the transmission and reception of raw binary data over a physical medium, such as cables or wireless signals. This layer defines the electrical, mechanical, and procedural aspects required for the physical connection between devices.
Middle layer of osi model is Transport layer functions: 1.Segmentation of data 2.connection managment 3.flow control of data 4.Error checking
The physical layer - it describes the hardware and the signaling techniques used at the physical connection between the network and the device.