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6.  Which of the following is not a graphical user interface (GUI)?

                       a. Windows Vista                                    b. MacOS

                       c. DOS                                              d. Linux

                 B.  Fill in the blanks using the words given below.

                                   Hints: Real-Time OS, difficult, deallocates,  GUI, operating system

                     1.  A .............................. is a system software that acts as a mediator between the user and the computer
                        hardware.
                     2.  .............................. provides certain capabilities like controlling machine within a specified period of
                        time.
                     3.  In CUI people find it .............................. to remember all the commands.
                     4.  .............................. provides icons, buttons, windows and menus to give commands.
                     5.  When we delete a file or folder, the operating system .............................. the memory spcae allocated for it.

                 C.  Write ‘T’ for true and ‘F’ for false.
                     1.  An operating system consists of hardware and software.                             ....................
                     2.  OS stands for operating system.                                                    ....................
                     3.  CUI stands for Card Used Interface.                                                ....................

                     4.  Application software includes the OS, BIOS, and utility software.                  ....................
                     5.  GUI is a more user-friendly interface.                                             ....................

                 D.  Match the following terms:
                        Column A                            Column B
                     1. Windows 11                       a. CUI

                     2. CLI                              b. MacOS
                     3. Apple                            c. Specific Task
                     4. Booting                          d. GUI
                     5. Application Software             e. loading an OS


                                                        Section B (Subjective)
                 A.  Short answer type questions:
                     1.  Name any two types of operating system.
                     2.  Name any two categories of software.
                     3.  Write two disadvantages of character user interfaces.
                     4.  Write the names of any two GUI operating systems.

                 B.  Long answer type questions:

                     1.  List down the advantages and disadvantages of GUI.
                     2.  Explain the functions of an operating system.
                     3.  What is the difference between CUI and GUI interfaces?
                     4.  Explain the following types of operating systems:
                         a.  Multi-processing               b.  Real-time


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                                                                                              Operating System
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