Data Link Layer

What Does Data Link Layer Mean?

The data link layer is used for the encoding, decoding and logical organization of data bits. Data packets are framed and addressed by this layer, which has two sublayers.

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The data link layer’s first sublayer is the media access control (MAC) layer. It is used for source and destination addresses. The MAC layer allows the data link layer to provide the best data transmission vehicle and manage data flow control.

The data link layer’s second sublayer is the logical link control. It manages error checking and data flow over a network.

Techopedia Explains Data Link Layer

The data link layer frame includes source and destination addresses, data length, start signal or indicator and other related Ethernet information to enhance communication. This layer’s main responsibility is to transfer data frames between nodes over a network.

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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…