Which layer in the TCP/IP model is responsible for segmentation and reassembly of data for end-to-end communication?

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Multiple Choice

Which layer in the TCP/IP model is responsible for segmentation and reassembly of data for end-to-end communication?

Explanation:
End-to-end data delivery and segmentation happen at the Transport layer. It takes the stream of bytes from an application, splits it into manageable segments, and adds sequence information so the receiver can reorder and reassemble them into the original data stream. This layer is also where reliability, flow control, and error recovery are handled (especially with TCP). The Application layer deals with the programs that use the network, but it doesn’t manage how data is split and reassembled across the network. The Network layer handles routing and addressing, not end-to-end segmentation. The Data Link layer handles framing and delivery on a single link, not end-to-end communication.

End-to-end data delivery and segmentation happen at the Transport layer. It takes the stream of bytes from an application, splits it into manageable segments, and adds sequence information so the receiver can reorder and reassemble them into the original data stream. This layer is also where reliability, flow control, and error recovery are handled (especially with TCP). The Application layer deals with the programs that use the network, but it doesn’t manage how data is split and reassembled across the network. The Network layer handles routing and addressing, not end-to-end segmentation. The Data Link layer handles framing and delivery on a single link, not end-to-end communication.

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