Network Layer is the 3rd layer in the 7Layer OSI Model after Data Link Layer. This is the place where most Routing and network stuff resides. It controls the Logical boundaries of Network. Most of the students confuse Layer2 & Layer3. There is a basic difference b/w Network Layer & Data Link Layer. Network Layer is concerned with data transfer from one computer to another computer even if it is on a remote network, while the data link layer only deals with devices that are local to each other & are within one network. PDU at Data Link Layer is Read More …