Generations of Wireless Network
       0G     It is known as Mobile radio telephone, are the systems that preceded modern cellular mobile telephony technology.
       1G     The first generation of wireless telephone technology (mobile telecommunications). These are the analog
              telecommunications standards that were introduced in the 1980s.
       2G     The second generation 2G cellular telecom networks were commercially launched on the GSM standard in 1991.
              2.5G added data (GPRS) and 2.75G faster data (EDGE)
       3G     It is based on a set of standards used for mobile devices and mobile telecommunications use services and networks
              that comply with the International Mobile Telecommunications-2000 (IMT-2000) specifications by the International
              Telecommunication Union.
              3.5G faster data, added packet data onto CS architecture (HSPA)
       4G     It provides, in addition to the usual voice and other services of 3G, mobile broadband Internet access, for example to
              laptops with wireless modems, to smartphones, and to other mobile devices.
              4.5G is a grouping of disparate mobile telephony and data technologies designed to provide better performance than
              4G systems, as an interim step towards deployment of full 5G capability.
       5G     It denotes the next major phase of mobile telecommunications standards beyond the current 4G/IMT-Advanced
              standards.
                                                          INTERNET
It is the Biggest Network of computer networks on Earth.
It is the global system of interconnected mainframe, personal, and wireless computer networks that use
the Internet protocol suite (TCP/IP) to link billions of devices worldwide.
Vinton Gray is recognized as one of "the fathers of the Internet", sharing this title with TCP/IP co-
inventor Bob Kahn and packet switching inventors Paul Baran and Donald Davies.
Internet Connection Types                                                        Wireless Internet Connection makes use
                                                                                  of radio frequency bands to connect to the
     Dial-up connection uses telephone line to
                                                                                  internet and offers a very high speed.
      connect PC to the internet. It requires a
      modem to setup dial-up connection.                                    Internet related Terms
     ISDN is acronym of Integrated Services
                                                                                 Bandwidth is the capacity of an electronic
      Digital Network. It establishes the
                                                                                  line, such as a communications network or
      connection using the phone lines which
                                                                                  computer channel, to transmit bits per
      carry digital signals instead of analog
                                                                                  second (bps).
      signals.
                                                                                 Blog is information that is instantly
     DSL is acronym of Digital Subscriber Line.
                                                                                  published to a Web site.
      It is a form of broadband connection as it
      provides connection over ordinary                                          Bookmark is a way of storing your favorite
      telephone lines.                                                            sites on the Internet.
     Cable Internet connection is provided                                      Cookie is the information created by a Web
      through Cable lines. It uses coaxial cable                                  server and stored on a user"s computer.
      which is capable of transferring data at                                   Domain Name is the part of a network
      much higher speed than common telephone                                     address which identifies it as belonging to a
      line.                                                                       particular domain.
     Satellite Internet connection offers high                                  Domain Name Server (DNS) converts
      speed connection to the internet. There are                                 between a machine name and a numerical
      two types of satellite internet connection:                                 IP Internet address.
      one way connection or two way connection.
                                                                    687