CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Network Basics and Security
In the OSI reference model, which layer is responsible for end-to-end delivery of data between processes on two hosts, including segmentation and error recovery?
The transport layer is correct. It provides end-to-end communication between processes on different hosts, breaking data into segments, controlling flow and recovering from errors. The network layer merely routes packets between networks using logical addresses and does not guarantee delivery between applications.
- ANetwork layer
- BTransport layerCorrect
- CData link layer
- DSession layer
Explanation
The transport layer (Layer 4) provides process-to-process delivery, segmentation, reassembly, flow control and error recovery. The network layer only handles logical addressing and routing of packets between networks, so it is not the layer providing end-to-end reliability.
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