What are the two most important jobs of the Data Link layerS

What are the two most important jobs of the Data Link layer?

Solution

Data link layer ensures that all the packets of information are passed on are free of errors. It make sure that the appropriate physical protocol is assigned to the data. The data link layer is the second layer in OSI model.

The three main functions of data link layers are:

When data link layer transfers the data to network layer it uses timers and sequence numbers to check for errors and to make sure that all the data is successfully transmitted to the network layer. Data link layer has different protocols to complete it\'s tasks. The data link layer is much like the postal service, every piece of of mail, or package much meets certain requirements to ensure it gets to specified location.

Different jobs of Data link layer is given below: