Page 18 - Trackpad_V5_Book 8
P. 18

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

            The 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 kilometres. Long distance

            wireless communication media includes microwave, radio wave, 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 hot-spot 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 printers,
                                                                   mouse,  keyboards,  headphones,  etc.  It is
                                                                   used to exchange data over a short distance
                                                                   from fixed or mobile devices.










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