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Wi-Fi is used to establish network in offices or within the small campus of an organization. It establishes
                 a good network connectivity generally for locations within a distance of 100 mts. It reduces the usage of
                 spaces & cables.
                           Notes


                           WiMAX stands for Worldwide Interoperability for Microwave Access. It is a type of telecommunication
                           facility that enables wireless transmission of data. It is specially used in places where
                           internet  connectivity  is  poor.  A  Local  base  station  is  created  at  such  places  where
                           WiMAX device is installed so that it catches signal, amplifies it and passes on to a local
                           network. Its range of operation is within 50 Km radius from base station.




                 Infrared

                 It is a  networking  media in which  computing  devices are  connected  via short-range  wireless signals
                 through infrared adapters. Infrared connections are commonly used in remote controls to operate TV, AC,
                 etc. that can connect by signal transmission in a short range distance.

                   CLOUD COMPUTING

                 Cloud computing refers to the usage of IT applications that are available on Cyber network but stored in
                 a remote server. Rather than keeping files on a hard drive or local storage device, cloud-based storage
                 makes it possible to save program or data on a remote storage media and can be accessed anywhere
                 using internet connections.
                 It makes it easier  for  organisations to use the  same software at  different  locations or  branches  as
                 the application package can be used by numerous users thereby saving cost of multiple numbers of
                 installations.

                 Computers connected to cloud computing technology are known as Cloud Computers.  Cloud services
                 enable the users to use applications or remote servers. Thus it saves cost of purchasing additional software
                 licence. It also reduces data duplication of redundancy & removes data inconsistency or contradictions.
                 Cloud Computing is also very helpful in transferring the large files, eg: E-mails have the limitation of

                 sending files upto 25MB size only but larger files can be sent through cloud storage options such as
                 Google Drive. Some of the types of clouds are:
                 l    Public Cloud: It is available through Internet to anyone who is willing to pay for the services of
                      application. Some examples of public cloud computing are AWS, Microsoft Azure, etc.

                 l    Private Cloud: It is generally an application that is developed and run by a particular organisation
                      for its own use at different branches or location. Some examples of private cloud computing are
                      Google drive, One drive, IDrive, etc.


                   PROTOCOLS
                 Protocol refers to a set of common notions, norms or rules that coordinate or govern the functioning
                 between two or more sets of computers or networks.







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