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    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

                     Short  distance  wireless communication media includes Wi-Fi, Bluetooth  and  Infrared
                     communication.
                       Wi-Fi: It stands for 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.

                          PURE
                          FACT       Bluetooth was named after the 10th century Danish king, Harald I Bluetooth.

                                   Subject: Global Positioning System
                                   Global Positioning System: The short form of Global Positioning
                                   System is GPS. It is a satellite-based navigation system which
                                   is used to identify the geographical location of an object. It is
                                   made up of a network of 24 satellites placed into orbit by the
                                   U.S. Department of Defense. These are strategically positioned
                                   so that at least four satellites can be seen with a clear line of
                                   sight from anywhere on the globe. It is used for tracking mobiles, cars, etc.

                                                                                                  Networking Concepts  17

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