It's the layer that defines the physical characteristics on the transmission medium, for example voltage amounts, little bit costs, connectors and cables. Additionally, it handles the transmission and reception of bits around the medium. Rationalization: The TCP/IP model is made of 4 layers: application, transportation, World-wide-web, and network entry. Of https://maps.app.goo.gl/dB9WkS2Ye8j5Eymz9