COMPUTER NETWORKING

Detailed explanation-1: -Layer 1 of The OSI Model: Physical Layer defines electrical and physical specifications for devices. The physical layer defines the relationship between a device and a transmission medium, such as a copper or optical cable.

Detailed explanation-2: -Physical Layer Cable Types There are 3 main types of cables used in networking: shielded twisted pair, unshielded twisted pair, and coaxial.

Detailed explanation-3: -Physical layer in the OSI model is the first and the lowest layer of the OSI reference model. It is responsible for controlling the way unstructured, raw, bit-stream data is sent and received over a physical medium.

Detailed explanation-4: -The main functionality of the physical layer is to transmit the individual bits from one node to another node. It is the lowest layer of the OSI model. It establishes, maintains and deactivates the physical connection. It specifies the mechanical, electrical and procedural network interface specifications.