Network Layer0 Comments

It is the third lowest layer in the OSI seven-layer model,It is the layer which is responsible for routing data across the network.The Network Layer is responsible for end-to-end (source to destination) packet delivery including any routing through intermediate hosts.

In other word, it is responsible for establishing paths for data transfer through the network.

• The Network Layer resides above the Data Link Layer and below the Transport Layer.
• It is responsible for communicating Networks.
• The Network Layer is also responsible for packet sequencing, congestion control, and error handling.
• It recognizes Networks with the help of Network Addresses
• Network Address is a logical address like IP Address or IPX Address
• Path determination or Routing is performed at this layer.
• Router works at this layer.

• Transport Layer
• Datalink Layer
• Transport Layer
• Session Layer
• Presentation Layer