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SIMPLE MAIL TRANSFER PROTOCOL (SMTP)
                 SMTP stands for Simple Mail Transfer Protocol and is the most popular protocol for transferring
                 electronic mail via the Internet.

                 POST OFFICE PROTOCOL 3 (POP3)

                 POP3 stands for Post  Office Protocol  3. It is  the recent  version of the  Internet protocol  for
                 receiving e-mails. It allows you to download e-mail messages on your local computer and read
                 them even if you are offline. When you use POP3 to connect to your e-mail account, messages are
                 downloaded locally and removed from the e-mail server. It is a client-server protocol.


                                          1.     What is the use of LAN?
                                              _______________________________________________________
                                          2.   What is the use of GPS?
                                              _______________________________________________________
                         uiz   Bee        3.   What is the use of HTTP?

                                              _______________________________________________________






                                   Imagine, computer networks as highways in the sky. What vehicles would travel
                                   on these highways and what destinations would they reach?






                        Hashtag

                      #Protocol: Set of rules or procedures for transmitting data between electronic devices
                      #Computer Network: Collection of computers and peripheral devices connected by communication
                      links through which data is transferred in the form of signals




                      REVISIT



                   ▶   A network is defined as a group of devices that are linked together to share information, data and resources.
                   ▶    A computer network is a collection of computers and peripheral devices (the network components) connected
                     by communication links (wired or wireless) through which data is transferred in the form of signals.
                   ▶    The components needed for a network are Network Interface Card, hub or a switch, router, modem,
                     networking cable, gateway, etc.
                   ▶   Based on the architecture, networks are classified into client-server network and peer-to-peer network.
                   ▶    Topology means the arrangement of computers in a network. The five basic topologies used for creating a
                     network are Bus, Ring, Star, Tree, and Mesh.
                   ▶    Protocols are rules and standards that are to be followed to ensure secure transfer of data from one
                     computer to another over the Internet.






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