Data Link and Network Layer
The Data Link Layer is the second layer in the OSI (Open Systems Interconnection) model and is responsible for providing reliable data transfer across a physical link between two network nodes. This layer deals with the transmission of data frames between two adjacent network nodes, ensuring that data is transmitted without errors and in the correct sequence.
The Network Layer is the third layer in the OSI (Open Systems Interconnection) model and is responsible for the routing of data packets between different networks. This layer provides logical addressing and internetworking services, allowing data to be transmitted between networks with different physical characteristics.