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Bluetooth

            Bluetooth  is a technology that  enables wireless communication between  a
            low-power  consumption devices within a short range  (1 meter, 10 meters, 100
            meters). It facilitate for different devices to communicate with each other when they
            are in a required range. The latest version of bluetooth, Bluetooth 5.0 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
            Protocol is a set of rules that governs the communication between the computers on a network.
            Certain network protocols and standards are to be followed in order 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:

                HTTP (Hyper Text Transfer Protocol): It is a set of rules that defines how the web pages
               transfer data over the Internet.
                HTTPS (Hyper Text Transfer Protocol Secure): It is secure version of HTTP. The information
               is converted into code to prevent unauthorised access. Nowadays, most of the websites uses
               the HTTPS protocol instead of HTTP.
                FTP (File Transfer Protocol): It is a set of rules that allows file uploading and downloading
               from the other computers over the Internet.

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

               Recap


                    A computer network means a system of interconnected computers.
                    The components needed for a network are Network Interface Card, networking cable,
                    hub or a switch and router.
                    Various types of topologies used in a network are bus, star, tree, ring and mesh.
                    There are two types of computer network architectures – peer-to-peer network and
                    client-server network.

                    It is the most popular wireless communication technology used for homes, private
                    business LANs and public hotspots.



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