When an OSI layer receives a message from the next higher layer, it performs the requested services and then wraps that message in its own layer of control information for use by the corresponding layer at the receiving end.

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Quizplus · Accepted Answer

This is the basic concept of layered networking and communication, which is the basis of the OSI model. Each layer provides services to the layer above it, and adds its own layer of control information before passing it down to the next layer. This ensures that the message is properly formatted and encapsulated for transmission across the network.

When an OSI Layer Receives a Message from the Next