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catb.org/~esr/faqs/hacker-howto.html

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Posted by crouse

en.wikipedia.org/wiki/Data_Link_Layer

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Posted by crouse

One of two sub layers of the data link layer of OSI reference model, as defined by the IEEE 802 standard. This sub layer is responsible for maintaining the link between computers when they are sending data across the physical network connection.

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Posted by robin