Data Link ( Data Link) layer and Network (Network) layer are two different network layers in different layers in computer networks and have different functions. Here are the main differences between these two layers:
Function:
Data Link Layer: This layer determines how data is transmitted and edited and controlled in the physical environment. Their main task is to manage data transmission related processes such as frame creation, addressing, error control, flow control and armament.
Network Layer: Network Layer determines how data is routed over the network and how it should be transmitted to target devices. This layer focuses on functions such as routing data packets within the network, delivering packets to source and target addresses, and ensuring communication between subnets.
Places:
Data Link Layer: According to the OSI model (Open Systems Interconnection), the Data Link layer is the second layer and is usually applied hardwareally on physical network devices ( for example, network cards ).
Network Layer: According to the OSI model, Network Layer is the third layer and is implemented by devices such as network routers. This layer provides data transmission between different networks.
Addressing:
Data Link Layer: This layer manages physical addressing using MAC (Media Access Control) addresses. MAC addresses are assigned to network cards and identify devices.
Network Layer: This layer identifies devices on the network and performs routing using logical addressing ( for example, IP addresses ).
Scope:
Data Link Layer: This layer regulates communication between devices usually on the same local network. That is, communication between devices within the same network segment falls within the responsibility of this layer.
Network Layer: This layer regulates communication between different networks. It redirects data packets from one network to another and therefore has a wider scope.
These differences will help you distinguish the duties and responsibilities of the Data Link layer and Network layer. The two layers are the basic building blocks of a network that work together to provide data transmission and routing.
