1) Explain the use of the operating system. Gie some examples of the Microsoft operating systems. 2) Give a suitable example for the extension of the following file types: Sound files – image files – video files – text files – compressed files – document files 3) Write the shortcut keys for the following commands: copy, cut, paste, undo and redo 4) Write the following specifications about your computer in the training lab: Ram size – processor speed – windows version/edition – computer name 5) The user can perform many settings in Microsoft Windows using the Control Panel, give some examples for these settings. Complete the following sentences : 6) The ascending order for the last versions of MS windows are win 8, ......., ........ and .......... 7) You can change file or folder display from ..................... 8) By pressing the shortcut key Ctrl+ Shift+Esc, the ............ window will be opened and then we can ........ the unresponsive program. 9) The shortcut key that is used to permanently delete a file or a folder, without placing it into the Recycle Bin, is ........... 10) Windows 10 offers three file system options when formatting a partition of the hard disk or a USB drive, these options are ........, ........, and ........ State whether the following sentences are true or false : 11) we can't restore the deleted files from the Recycle Bin. 12) we can't restore the deleted files after emptying the Recycle Bin. 13) Deleting the shortcut of a file will also delete the original file. 14) Users with the administrator account can work with applications, but they can't install new ones. Al Salam University Computer Applications Course Sheet ( 2 )