It is the layer that defines the physical attributes of your transmission medium, including voltage levels, bit rates, connectors and cables. In addition, it handles the transmission and reception of bits about the medium. Rationalization: The TCP/IP product includes 4 levels: application, transportation, internet, and network accessibility. Of those 4 https://maps.app.goo.gl/dB9WkS2Ye8j5Eymz9