Which layer of the OSI model is responsible for end-to-end communication, flow control, and reliable error recovery using protocols like TCP?

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A Network Layer
B Data Link Layer
C Transport Layer
D Session Layer

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Answer: C. Transport Layer

• Answer: C
• Explanation: The Transport layer (Layer 4) ensures complete, reliable message delivery from source to destination host. It handles segmentation, flow control, and error checking. The Network layer handles logical routing, while the Data Link layer manages node-to-node physical transfers.

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Which layer of the OSI model is responsible for end-to-end communication, flow control, and reliable error recovery using protocols like TCP?

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