Data Link Layer Design Issue
Data Link Layer• This layer deals with the algorithms for achieving reliable,
efficient communication between two adjacent (i.e. physically connected by
a communication channel like a wire) machines just above the physical
layer.
• Data transfer data rate and error correction are the major
concerns of the data link layer.
• Circuit errors, finite data rate and propagation delay have
important implications for the efficiency of the data transfer. The protocols
used for communications must take all these factors into consideration.
