Define of transmission media and their types ?

Transmission media refers to the physical pathways through which data is transmitted from one device to another. There are several types of transmission media, including:

1. Wired transmission media: This type of media uses physical cables or wires to transmit data. Examples include twisted pair cables, coaxial cables, and fiber optic cables.

2. Wireless transmission media: This type of media uses electromagnetic waves to transmit data without the need for physical cables. Examples include radio waves, microwaves, and infrared waves.

3. Guided transmission media: This type of media includes wired transmission media, where the data signals are guided along a specific path. Examples include twisted pair cables and fiber optic cables.

4. Unguided transmission media: This type of media includes wireless transmission media, where the data signals are not guided along a specific path. Examples include radio waves and microwaves.

5. Analog transmission media: This type of media transmits data in the form of continuous signals. Examples include analog telephone lines and radio waves.

6. Digital transmission media: This type of media transmits data in the form of discrete signals. Examples include digital telephone lines and fiber optic cables.

Overall, the choice of transmission media depends on factors such as the distance of transmission, data transfer speed, cost, and reliability.