What are the responsibilities of the data link layer in the Internet model?

           The data link layer is responsible fora. framing data bitsb. providing the physical addresses of the sender/receiverc. data rate controld. detection and correction of damaged and lost frames The data link layer is responsible for moving frames from one hop or node to the next. Other responsibilities of the data link layer include the foollowing….

1.     Framing –

        The DLL dividdes the stream of bits received from the network layer into manageable data units called frames.

2.     Physical addressing –

         If the frames are to be distributed to different systems on the network, the DLL adds a header to the frame to define sender or receiver of the frame.

3.     Flow control –

        Flow control is one of the important design for DLL...Flow control, that controls the flow of data between sender and receiver.

4.     Error control –

         DLL is responsible to detect and retransmit damaged or lost frames...It also user a mechanism to recognize duplicate frames.

5.     Access control –

          When two or more devices are connected to the same link, DLL protocols are determine, which device has control over the link at any given time.