answer these All questions plz

Review Questions:: In your own words, briefly answer the following questions. 1. What are the four primary functions that an operating system performs? 2. What device is used to work with graphical objects in a GUI? 3. When working with Windows, what happens when you right-click on most objects? 4. What is the function of windows in a GUI? 5. Why is task-switching a necessary feature of a multitasking operating system? 6. What is a dialog box? 7. Describe the Clipboard and its use. 8. What is the difference between object linking and object embedding? 9. Explain the value of running a screen saver. 10. Explain what a driver does