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d.  HTTP is the protocol used for secure communication over a network.

                    e.  A mesh topology is mostly used in LANs due to its minimal chances of breakdown.


 1.  Tick ( ) the correct option.  4.  Answer in one or two words.
                    a.   Name the device that allows the data to flow between two different networks.   ____________
    a.   Which device regenerates and amplifies the input signals in a network?
                    b.   What is the unique identification number assigned to a computer connected
    (i)   Router      (ii)  Repeater
                        to a network?                                                                  ____________
    (iii)   Hub      (iv)  Switch
                    c.   Which type of network spans several buildings in the same city or town?       ____________
    b.  Which of the following protocol is used to exchange data between a web browser and a website?
                    d.   Name the topology that connects all nodes in a circular path.                 ____________
    (i)   TCP/IP      (ii)  HTTP
                    e.    What is the set of rules that governs communication between computers on
    (iii)   FTP      (iv)  IMAP   a network?                                                           ____________

    c.  Identify the topology that connects all nodes to a single central hub.  5.  Think and answer.
    (i)  Bus      (ii)  Ring
                    a.  What is the function of a Network Interface Card (NIC)?
    (iii)   Star      (iv)  Mesh
                        _____________________________________________________________________________
    d.  Which device connects and facilitates information transfer between two networks?
                        _____________________________________________________________________________
    (i)   Switch      (ii)  Router
                    b.  Explain the difference between a client-server network and a peer-to-peer network.
    (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      c.  Describe the role of a router in a network.
                        _____________________________________________________________________________
 2.  Fill in the blanks using the words from the help box.
                        _____________________________________________________________________________
 node, bandwidth, hub, server, modem
                    d.  How does the Global Positioning System (GPS) work?
    a.  A computer connected to a network is known as a _____________.
                        _____________________________________________________________________________
 b.  _____________ is a device which is used to transmit data over a network.
                        _____________________________________________________________________________
    c.   A _____________ connects multiple computers to a single network and broadcasts data to all
 connected devices.     e.  Explain the working of a modem.
    d.   The capability  of a transmission  medium  to  transmit  the  maximum  amount  of data  is  called   _____________________________________________________________________________
 _____________.
                        _____________________________________________________________________________
 e.  _____________ controls the access to the hardware and software on the network.
                        _____________________________________________________________________________
 3.  Write 'T' for true and 'F' for false.
    a.  A hub has decision-making capabilities and works on the data link layer.      f.   How does the use of HTTPS instead of HTTP improve the security of data transmitted over the
                        Internet?
    b.  A PAN is used to establish communication within a range of 20 to 30 feet.   _____________________________________________________________________________

    c.  The Internet is a collection of vast number of computers spread across the world.   _____________________________________________________________________________
                        _____________________________________________________________________________



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