Domain 3.0 Operating Systems

Domain 3.0 Operating Systems - A+ Study Guide: Domain 3.0:...

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A+ Study Guide: Domain 3.0: Operating Systems - Read Me First he purpose of this document is to explain some things about  Operating Systems  section of our study guide.  Please read the following notes before you procede to the next section.  The A+ exams require that you understand how to perform basic functions in  Windows  and other operating  systems. This is not something that we can teach you in a study guide - it is something that requires that you  have worked with the product. If you do not have experience navigating and working with  Windows operating   systems , you probably aren't ready to get certified at this  time There is more information about Windows integrated into other  domains  of our study guide.  Finally, please note that the last 2 guides in this section " Windows 2000 " and "Windows XP" are actually for  other certifications, but contain a lot of the  information  you will need. They will also contain a lot of information  you don't need for the A+ exams, so make sure you use the exam objectives to sort through the information.  These 2 links will open in a new window because they do not have the "Return to the Index" link that will bring  you back to the main menu.  Eventually, we may sort the information into  tutorials  specifically aimed at the A+ objectives, but for now, this is  what we are providing as reference material. A+ Study Guide: Domain 3.0: Operating Systems - Operating System Basics Introduction: This section will provide a brief introduction to UNIX, Linux, Mac OS, and Windows operating systems . The A+ exams will focus mainly on Windows as will this guide. What is an Operating System: An operating system is a program that is loaded into the computer on boot up that is responsible for running other applications and provides an interface with which to interact with other programs. This interface can be mainly command-line based like Linux or Unix , or can primarily revolve around a Graphical User Interface (GUI) such as Windows and Macintosh operating systems. Operating Systems can be divided into 2 groups: Single-process and multiprocess. Single process operating systems are capable of working on 1 task at a time while a multiprocess OS can work on several processes at once by breaking tasks into threads. There are several terms related to multiprocessing systems that you will need to know as follows:
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Multitasking - This is the ability to work on several different tasks at a time. This is accomplished by switching back and forth between the tasks. There are a few different types of multitasking: o Task Switching - Allows for multiple applications to be run at the same time. The window that is in the foreground is the active window while the other applications run in the background. Used
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Domain 3.0 Operating Systems - A+ Study Guide: Domain 3.0:...

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