Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 20 - 2611_SmartGPT Pro V(5.0) C-8
P. 20

    Microwaves: Microwaves  travel in straight  lines and require  line-of-sight communication
                         between antennas. They are used in satellite links, mobile communication and TV broadcasts.

                                      Transmitter            Receiver     Transmitter        Receiver

                                                     Microwaves                    Microwaves

                                        End Station                Relay Station                 End Station

                         Infrared  waves: Infrared waves are used  for
                         short-range communication  and cannot  pass
                         through solid objects. They are commonly used in
                         TV remotes, wireless mice and security systems.          Television      Infrared       Remote
                                                                                                 Radiations

                           Tick ( ) if you know this.

                           ▶  A transmission medium is the path or channel through which data travels from one
                              device to another in a network.
                           ▶  Network architecture refers to the design and layout of a computer network.

                             Hashtag

                           #Data packets: Data packets are small units of data transmitted over a network.
                           #Media Access Control (MAC) Address: A MAC address is a unique identifier assigned
                           to a network interface card (NIC) or network device.

                           REVISIT

                        ▶   A computer network is a group of computers and other devices connected together to share resources and
                          information.
                        ▶   A client is a system or device that uses services and resources provided by a server in a network.
                        ▶   Data communication is the process of exchanging data between two devices.
                        ▶   A network protocol is a set of rules that are applicable for a network.
                        ▶   Network architecture refers to the design and layout of a computer network.
                        ▶   Topology describes the physical or logical layout of the network.

                       18   Computer Science (V5.0)-VIII

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