Page 21 - KEC Khaitan C8.2 Flipbook
P. 21

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.











                 1.  Tick ( ) the correct option.

                    a.   Which device regenerates and amplifies the input signals in a network?

                         (i)   Router                                     (ii)  Repeater
                        (iii)   Hub                                      (iv)  Switch

                    b.  Which of the following protocol is used to exchange data between a web browser and a website?

                         (i)   TCP/IP                                     (ii)  HTTP
                        (iii)   FTP                                      (iv)  IMAP

                    c.  Identify the topology that connects all nodes to a single central hub.
                         (i)  Bus                                         (ii)  Ring

                        (iii)   Star                                     (iv)  Mesh

                    d.  Which device connects and facilitates information transfer between two networks?
                         (i)   Switch                                     (ii)  Router

                        (iii)  Hub                                       (iv)  Gateway
                    e.  Identify the correct full form of DNS.

                         (i)   Domain Name System                         (ii)  Digital Network System

                        (iii)  Domain Network Service                    (iv)  Digital Name Service
                 2.  Fill in the blanks using the words from the help box.

                                              node, bandwidth, hub, server, modem

                    a.  A computer connected to a network is known as a _____________.




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