Ans:Flow control and error control are the most important functions of data link layer. Flowcontrol
refers to a set of procedures that allows the communicating devices having different speed and memory
characteristics to communicate with each other in an efficientmanner. It ensures that a slow receiver is
not being floodedby the fast sender. Thus, flowcontrol restricts the amount of data that can be sent from
the sender before waiting to receive an acknowledgement (ACK) from the receiver. Each receiver has
a block of memory known as buffer for reserving ...
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