1. UNIX treats all devices as files. Explain why this was an innovative feature when it was first introduced and how it adds flexibility to this operating system.
2. Describe in your own words the purpose of all user interfaces, whether comand- or menu-driven.
3. Explain the importance of monitoring system performance and why windows makes this information available to the user.
4. If you wanted to add these four files to one Linux directory (october.doc, OCTber.doc, OCTOBER.doc, and OcTOBer.doc), how many new files would be displayed: one, two, three, or four: Explain why this is so. Do you think the answer is the same for all operating systems? why or why not?