Name the layer of the OSI model that is responsible for routing data packets.

The layer of the OSI model responsible for routing data packets is the Network layer. This layer plays a crucial role in determining how data is sent from the source to the destination across different networks. It is tasked with logical addressing and routing, which allows data to traverse multiple networks and reach the correct endpoint.

In particular, the Network layer uses routers to make forwarding decisions based on the IP addresses of the packets. It ensures that packets can be directed through various paths in a network, adapting to changes in the network topology or traffic conditions. Routing protocols operate at this layer to find the best pathways for data flow, laying the groundwork for efficient and effective communication between devices.

While the Data Link layer pertains to the physical connection between devices on the same local network and handles MAC addresses, and the Transport layer manages end-to-end communication and flow control, the Network layer is specifically focused on the routing aspect of data packets across different networks. The Session layer is involved in establishing, managing, and terminating sessions but does not participate in routing. Hence, the recognition of the Network layer as responsible for routing is fundamental in understanding how networking functions as a whole.