22.DataLinkLayer.md

Data link layer in computer Networks and its Responsibilities

• between Physical and network layer, takes data from network layer and send to physical layer.
• Data link layer work within the network

Hop-to-Hop / Node-to-Node

Suppose we have to send data from A4 to B1 , so data cannt directly go to next network, the main responsibility of Data Link Layer is to send data from one node to another node. It's called Hop-to-Hop or Node-to-Node delivery

---