Transmission Media in Computer Network
Transmission Media in Computer Network
The transmission media is nothing but the physical media over which communication takes place in computer networks. Transmission media are the physical paths between a transmitter and a receiver.
Different transmission media have different properties such as bandwidth, delay, cost and ease of installation and maintenance. The transmission media is available in the lowest layer of the OSI reference model, i.e., Physical layer.
Types of Transmission Media
- Guided Media
- Unguided Media
Guided Media
It is also referred to as Wired or Bounded transmission media. Signals being transmitted are directed and confined in a narrow pathway by using physical links.
Features of Guided Media
Guided Media have high speed, Secure and it is Used for comparatively shorter distances.
There are 3 major types of Guided Media:
- Twisted Pair Cable
- Coaxial Cable
- Optical Fibre Cable
Unguided Media
It is also referred to as Wireless or Unbounded transmission media.No physical medium is required for the transmission of electromagnetic signals.
Features of Unguided Media
Unguided Media have these featuresl Signal is broadcasted through air Less Secure and it is Used for larger distances
Types of Unguided Media
- Radiowaves
- Microwaves
- Infrared