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    Bluetooth
                                                            Bluetooth is a technology that enables wireless communication
                                                            between low-power consumption devices within a short range
                                                            (1 meter, 10 meters, 100 meters). It facilitates communication

                                                            between  different devices when they  are within  a required
                                                            range. The latest version of Bluetooth, Bluetooth 5.4 technology,
                                                            provides data transfer speed up to 2 Mbps.

                                  Bluetooth
                     It provides a way to connect and exchange information between devices such as mobile phones,
                     telephones, laptops, printers, personal computers, GPS receivers (Global Positioning System)
                     through 2.4 GHz short range radio frequency bandwidth.

                            PROTOCOL
                                                                                       Just as red blood cells carry
                     Protocol is a set of rules that governs the communication         oxygen and white blood cells
                                                                                       fight infections, data packets
                     between the computers on a network. Certain network             deliver information while security
                     protocols  and  standards must  be  followed  in  order           protocols protect a network.

                     to  ensure  that  your  computer  can communicate  with
                     another computer over a network.
                     Different types of protocols used for different operations on the Internet are as follows:

                        Hypertext Transfer Protocol (HTTP): It is a set of rules that defines how the web pages transfer
                       information like documents, files, images, videos between computers over Internet.
                        Hypertext Transfer  Protocol  Secure (HTTPS): It is secure  version of HTTP.  The information  is
                       converted into code to prevent unauthorised access. Nowadays, most of the websites use the HTTPS
                       protocol instead of HTTP.

                        File Transfer Protocol (FTP): It is a set of rules that allows file uploading and downloading from the
                       other computers over the Internet.

                        Transmission Control Protocol/Internet Protocol (TCP/IP): It is a network protocol that defines
                       how the information or messages are routed from one end of a network to the other.
                        Post Office Protocol Version 3 (POP3): It is an Internet standard protocol that allows e-mail clients
                       to retrieve e-mail messages from an e-mail server.
                        Internet Message Access Protocol (IMAP): It is an e-mail protocol that stores e-mail messages on
                       a mail server and allows the user to view, access and manipulate the messages on the mail server
                       from their computer.
                        Simple Mail Transfer Protocol (SMTP): It is an e-mail protocol for sending e-mail messages across
                       the Internet.

                                                                                                  Computer Networking  17

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