What are the Functions of Data Link Layer


what are the functions of data link layer

The data link layer (sometimes simply called the link layer) is a protocol layer in the Open Systems Interconnection model that serves to provide reliable, communication-oriented channels between devices on a network. The data link layer is also responsible for managing communications with common network protocols, such as TCP and UDP.

What is a data link layer?

A data link layer is the lowermost of the four layers in the OSI model. It functions as the interface between a computer and its devices, such as a network card, printer, or input/output (I/O) controller.

A data link layer provides a mechanism for exchanging data between computers and peripheral devices. It manages frames, queues packets, and ensures proper delivery. Data link layer protocols include Ethernet, FDDI, Token Ring, and Asynchronous Transfer Mode (ATM).

What are the functions of a data link layer?

A data link layer is a layer of the OSI network model that supports the transmission of data between nodes on a computer network. Its functions include providing an interface to higher-layer protocols such as TCP/IP, managing error conditions, and transmitting packets in a reliable manner.

How does a data link layer work?

The data link layer is the layer of the OSI model that connects devices using packets of data. Its functions include establishing, managing, and terminating virtual circuits.


The data link layer is often overlooked, but it has a lot of important functions. It’s responsible for transporting packets of data between network nodes and provides an interface to the underlying transport protocol. You can think of the data link layer as the foundation on which other layers are built. In this article, we’ve looked at some of the key aspects of the data link layer and discussed how it can help you streamline your networking infrastructure. So next time you’re faced with a networking problem, don’t hesitate to reach out to the data link layer for help.