OPERATING SYSTEMS EXAM

1. What is an OS ?
The most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs.

2. In an Operating System the GUI, Graphical user interfaces, allow you to ...
The graphical user interfaces allow you to enter commands by pointing and clicking on objects displayed on the screen.

3. Why we can say that the OS is like a traffic Cop?
Because it makes sure tht different programs and users running at the same time don't interfere each other.

4. Linux was designed ...
to provide personal computer users a free or very low-cost operating system comparable to traditional and usually more expensive Unix systems.

5. What is the meaning of; Linux is distributed using the Free Software Foundation's copy left stipulations?
Linux is distributed using the Free Software Foundation's copy left stipulations that mean any modified version that is redistributed must in turn be freely available.

6. Microsoft Windows …
Is an operating system designed and produced by Microsoft Corporation. Windows makes a computer system user-friendly by providing a graphical display and organizing information so that it can be easily accessed.

7. What of the following OS is not a version of Windows?
Windows 97

8. Operating Systems can be classified as ...
· Multi-user : Allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users.
· Multi-processing : Supports running a program on more than one CPU.
· Multi-tasking : Allows more than one program to run concurrently.
· Multi-threading : Allows different parts of a single program to run concurrently.
· Real time: Responds to input instantly. General-purpose operating systems, such as DOS and UNIX, are not real-time.

 

9. Complete the following table:

System/Families	Creator	Processor	Net Agent	Interface
Windows 95-2000	Microsoft	Mono	No	Graphic
Windowx XP-Vista	Microsoft	Multi	No	Graphic
Mac OS X	Apple	Multi	No	Graphic
Linux	Depends	Multi	Yes	Graphic and text