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The document discusses data communication and the OSI 7-layer model. It provides details about each layer of the OSI model and their functions: 1. The physical layer deals with signal encoding and transmission over a medium. 2. The data link layer adds headers/trailers for error control, flow control, and media access between adjacent nodes. 3. The network layer handles routing across multiple nodes and choosing paths between sources and destinations. 4. The transport layer provides end-to-end error c

Author

Dinesh Palavalasa

Language

EN