Transmission media in a computer network is the physical channel or medium that connects the sender (transmitter) and receiver, enabling the transmission of data between devices in the form of electromagnetic signals. It serves as the communication path through which information travels from one device to another within the network

. There are two main types of transmission media:

• Guided Media (Wired/Bonded Media): These use physical cables or wires to guide the data signals. Examples include twisted pair cables (unshielded and shielded), coaxial cables, fiber optic cables, stripline, and microstripline. Guided media typically provide a narrow, direct path for signals and are often used for shorter distances due to physical limitations

• Unguided Media (Wireless Media): These transmit data through the air using electromagnetic waves without a physical conductor. Examples include radio waves, microwaves, and infrared waves. Unguided media are used for wireless communication technologies like Wi-Fi, Bluetooth, satellite communication, and cellular networks

Key characteristics of transmission media include bandwidth (data transfer capacity), transmission distance, susceptibility to interference, cost, and environmental durability. The choice of transmission media depends on factors like required data rate, distance, cost, and environmental conditions

. In summary, transmission media is the essential physical or wireless channel that carries data signals between devices in a computer network, enabling communication and data exchange