Q: Which layer of the network model includes specifications for cables and connectors and how signals are sent over these connections?
or
Q: Which layer of the network model describes the connectors and cables, as well as the protocol for sending signals across these connections?
- Data link
- Network
- Physical
- Transport
Explanation: The “Physical layer” of a network model is the layer that contains the requirements for cables and connectors, as well as how signals are sent across these connections, and it is called the “Physical layer.” The Physical layer is the lowest in both the OSI model and the TCP/IP model. This layer deals with the physical transmission of raw bits across a physical channel and is the lowest layer in both models. Specifications for cables and connections, as well as voltage levels and the physical features of the transmission medium, are included in this document.
