Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 20 - 2612_Digimind
P. 20

    Infrared Communication: The infrared light transmits data through the air and can propagate
                        throughout  the room by bouncing  off  surfaces but  will  not penetrate  walls.  This type  of
                                            transmission  uses  infrared light to  send data.  Infrared  light is similar  to

                                            normal lights, except that these have a longer wavelength. Therefore, they
                                            are not visible to us. You can see the use of this type of transmission in
                                            everyday life: TV remotes, automotive garage doors, wireless speakers, etc.
                                            All of these make use of infrared light for transmission.

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

                                                   _______________________________________________________

                             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.

                       18   Premium Edition-VIII

| 15 16 17 18 19 20 21 22 23 24 25 |