To which layer of the OSI model does Ethernet correspond?

Ethernet corresponds to the Data Link Layer of the OSI model, which is the second layer. The Data Link Layer is responsible for node-to-node data transfer and for handling error correction from the Physical Layer. It provides the necessary protocols for the physical addressing of devices on a local network and frames the data packets to be sent over the physical medium.

Ethernet, as a protocol, specifically defines how data is formatted for transmission, how devices on the same local network communicate with each other, and how to manage access to the physical medium, such as avoiding collisions. This makes it an essential part of the Data Link Layer's role in ensuring effective communication between devices on the same network segment.

The other layers, such as the Application, Network, and Transport layers, serve different functions. The Application Layer is focused on user interface and application services, the Network Layer is responsible for routing data between devices across different networks, and the Transport Layer ensures error recovery and flow control. Therefore, acknowledging Ethernet's role at the Data Link Layer highlights its function in network communications and its importance in local area networks (LANs).