Page 18 - Trackpad_V1_Book 8_Flipbook
P. 18

We  can group the  communication  media  into  two categories:  Guided media  and  unguided
                  media. The guided media includes cables and unguided media includes waves.

                  Unguided  media  are categorised  into  two types:  long-distance  wireless  and short-distance
                  wireless media.


                  LONG-DISTANCE WIRELESS MEDIA
                  It can support communication over longer distances, up to thousands of kilometers. Long-distance
                  wireless communication media includes microwaves, radio waves, and satellites.

                      Microwave: It refers to microwave radio transmission which is commonly used to send signals
                      from the earth to the satellites and vice-versa. These wavers are also used for deep space
                      communications, radar systems, radio astronomy, etc.

                      Radio  waves: These waves are commonly used  for  long-distance  communication  or
                      sending messages, information for communication for aircraft or naval communication. The
                      information is sent in the form of electromagnetic waves.


                  SHORT DISTANCE WIRELESS MEDIA

                      Wi-Fi: It refers to Wireless Fidelity, which lets
                      you connect to the Internet without any wired
                      connection from your PC. It is a popular form
                      of wireless connection as it does not require
                      cables.

                        It can be used to get connected through a
                      variety  of devices  like  laptops,  digital
                      cameras,  smartphones, gaming  consoles,

                      etc. To connect to a Wi-Fi network a hotspot
                      is required. The hotspot acts as a gateway to the Internet, you need to connect to a hotspot to
                      be able to connect to the Internet.




                                                                           Bluetooth: This wireless technology
                                                                           creates  a small  wireless network called
                                                                           Personal Area Network between personal

                                                                           computers      and    peripheral    devices
                                                                           such  as  a printer, mouse,  keyboard,
                                                                           headphones, etc. It is used to exchange
                                                                           data over a short distance from fixed or
                                                                           mobile devices.








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