The IEEE recognized that the Data Link

The IEEE recognized that the Data Link -...

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to Layer 1 at the sender's end, along the wire (or whatever communication medium connects the two  machines), and from Layer 1 up to Layer 7 at the receiver's end. The sender’s data packet gathers  instructions as it moves down through the layer stack and appends them to itself, based upon a concept  known as encapsulation. At the receiver's end, as each layer receives the data, the packet discards the  header (or de-encapsulates it) and interprets the content. It passes it to the layer above it, which then  performs the same process, once it completes its own data processing.  The IEEE recognized that the Data Link Layer implemented so many operations that  it could be split into two sections as actual hardware and software were deployed in  networks. The resulting Logical Link Control sublayer handles the interaction between  Layer 2 and Layer 3 for logical addressing, and the Media Access Control sublayer 
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This note was uploaded on 03/26/2012 for the course ITC 020 taught by Professor Abcd during the Spring '12 term at Andrew Jackson.

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