Page 76 - IT 402 v2.0 class 10
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vii.   ersonal  igital  ssistance                 viii.  ersonal Information Management

              ix.   lug and  lay                                x.  Master  oot  ecord
             .   ow does operating system act as a messenger between the hardware and the application program
          ns.    n  operating  system  acts  as  a  messenger  between  the  computer  hardware  and  the  application  program  by
              establishing a connection between the application and the hardware device  such as a printer attached to a
              computer.
             .   ifferentiate between   I and   I.
         Ans.
                                  CUI OS                                         GUI OS
                In    I  OS   the  user  sends  commands  and    In    I  OS   the  interface  is  graphical   i.e.   the
                 instructions to the computer  in character  form,   user interacts with the computer using figures
                 i.e.  by typing commands at the command prompt.   and graphics on the screen. It is basically menu
                  he display on the screen does not contain any   driven.
                 graphics.

                  I OS is not as interactive and user friendly as      I OS is user friendly and interactive.
                   I OS.
                 xamples are MS- OS and  NI .                   xamples are  indows and  inux.



             .   hat is  ime Sharing OS
          ns.    n operating system that allows the user to work on more than one application by switching between them
              is called a  ime Sharing OS.  he switching occurs so fre uently that the user can interact with each program
              conveniently.
            5.  Write any four functions of OS.
          ns.  Four functions of an operating system are as follows:
                Device Management: OS directly controls the operation of the input-output devices  like controlling the action
                of the printer  or the   - OM drive.

                Process Management:  OS  handles  the  scheduling  and  synchronisation  of  processing   suspension  and
                resumption of processes. OS independently prioritises  obs for processing inside a computer.
                Memory Management: OS co-ordinates and controls the use of memory in a computer.

                Security Management: OS protects information and resources against destruction and unauthorised usage.
             .   ist the names of any five operating systems.
          ns.   he names of five operating systems are:
                MS- OS                                                  NI

                Solaris                                                MS  indows
                 inux

             .   ist the name of five  inux distributions.
          ns.   he names of five distributions of  inux operating systems are:
                Slackware                                              Solaris
                 OSS                                                   S S

                 buntu




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