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What are the layers in osi reference models? Describe each layer briefly.
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Answer / Ritu Brijpal Saini
The OSI (Open Systems Interconnection) model consists of seven layers, each responsible for a specific aspect of network communication. From top to bottom, they are: Application Layer (provides services to applications), Presentation Layer (handles data representation and encryption), Session Layer (manages sessions between applications), Transport Layer (ensures reliable delivery of data segments), Network Layer (routes packets between networks), Data Link Layer (responsible for frame transmission over a single network), and Physical Layer (defines the electrical and mechanical characteristics of the network medium).
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