The piece
The piece of cable or physical environment in which devices are connected. This definition is more precise than the segment. A network of level 3. The LAN. The corporate or organizational network. Techniques for Layer 3 switching enable us to transfer data at high speed and that decisions are made by hardware. If it is necessary to transfer between different logical networks require a routing decision, which will take us longer. Characteristics of the Level 3 network the network number identifies a group of end devices or hosts, and label the group with the number of network.