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                         Topology

                                                                          Bus Topology

                                TRANSMISSION MEDIA

                      A transmission medium is the path or channel through which data travels from one device to

                      another in a network. It is essential for determining the speed, quality and reliability of the data
                      transfer.

                                                           Types of Transmission  Media

                                  Guided (Wired) Media                               Unguided (Wireless) Media

                        Twisted Pair       Coaxial       Fibre Optic                                           Infrared
                           Cable           Cable            Cable          Radio Waves      Microwaves         Waves

                      GUIDED (WIRED) MEDIA

                      Guided media uses physical cables for data transmission. The different types of guided media
                      include:
                         Twisted pair cable: This type of cable consists of two copper wires
                        twisted  around  each  other to  reduce  interference.  Twisted  pair
                        cables are commonly used in telephone lines and LANs.

                                                   Coaxial cable: This topology contains, a single copper wire surrounded
                                                  by insulating layers and shielding to prevent signal loss. Coaxial cables
                                                  are typically used in cable TV and data communication.
                         Fibre optic cable: This cable uses light signals transmitted through
                        thin strands of glass or plastic for transmitting data. Fibre optic cables
                        enable  noise-free  data  communication  at  high speed  over long-
                        distances.

                       16   Premium Edition-VIII

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