Data, Communication and Networks (Part 1).pptx

Guided & Unguided Transmission Media

1. Data, Communication and Networks Living in the IT Era Guided & Unguided Transmission Media

2. Transmission Media

3. Guided Transmission media Transmission Media Guided Media Types of Guided Media Twisted Pair cable Coaxial Cables Optical Fiber Unguided Media Guided Transmission Media

4. Sending of data from one device to another through Medium is called Transmission Media What is Transmission Media Transmission Media Guided Unguided

5. Guided transmission media means the data signals are guided along the path like cabling system. Guided (Wired) UTP CABLE

6. Guided (Wired) Twisted Pair Coaxial cable Fiber Optics Types Of Guided Media Guided Media Twisted Pair Co-Axial Cables Optic fibres

7. Consists of two insulated copper wires arranged in a regular spiral pattern to minimize the electromagnetic interference between adjacent pairs Often used at customer facilities and also over distances to carry voice as well as data communications Low frequency transmission medium Twisted Pair Wires

8. STP (shielded twisted pair) the pair is wrapped with metallic foil or braid to insulate the pair from electromagnetic interference UTP (unshielded twisted pair) each wire is insulated with plastic wrap, but the pair is encased in an outer covering Types of Twisted Pair

9. Types of Twisted Pair

10. Advantages Inexpensive and readily available Flexible and light weight Easy to work with and install Disadvantages Susceptibility to interference and noise Attenuation problem Relatively low bandwidth (3000Hz) Twisted Pair Advantages/Disadvantages