Which layer of the OSI model does the following functions belong to?

1) restore bitstream to frame;
2) decide which path to use to transfer data to the destination;
3) error control;
4) congestion control;
5) flow control;
6) Transmission medium


1) restore bitstream to frame;
link layer
2) decide which path to use to transfer data to the destination;
network layer
3) error control;
physical layer, link layer, network layer, transport layer
4) congestion control;
transport layer, network layer
5) flow control;
network layer, transport layer
6) Transport medium
physical layer < / p In general, the network layer does not do flow control, mainly fast addressing. The link layer is point-to-point flow control, and the transport layer is end-to-end flow control.

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