Basic Network Management - Chapter 2: Software & Operating System

Chapter 2: Software & Operating SystemObjectiveWhat is the software?How is software categorized? What is an operating system ?What does an operating system do?What’s the software ?Software is the instructions and associated data, stored in electronic format, that direct the computer to accomplish a task.A computer program is a set of detailed, step-by-step instructions that tells a computer how to solve a problem or carry out a task.How is software categorized?Software is categorized as either application software or system software.Application software is designed to be used for a purpose such as drawing designs, creating documents, etc. System software is designed to help the computer carry out the basic operating functions Ex: Operating systems, utilities, and driversOperating System Overview: Whatis an operating system ?An operating system (OS) is the master controller for all of the activities that take place within a computer. Ex: Microsoft Windows XP, Mac OS, Linux, UNIXThe operating system also interacts with the next functional layer called application software.How is software categorized?What does an operating system do?Example:Personal ComputerOperating SystemsWindows, Mac OS, Linux, Unix, and DOSWhat’s the best-selling operating system?Personal ComputerOperating SystemsMicrosoft Windows is the most popular, and is installed on over 80% of the world’s personal computersUNIX was developed in 1969 at AT&T’s Bell LabsLinux was developed in 1991DOS (Disk Operating System) was developed byMicrosoftPersonal ComputerOperating SystemsDifferent operating systems are needed for different computing tasks:Single-user operating systemEx: MS-DOS, Windows 3.1, Windows 3.11 Multi-user operating systemEx: Windows Server 2000/2003Network operating systemEx: Linux, Unix, Windows Server 2000/2003Multitasking operating systemEx: Windows Server 2000/2003Desktop operating systemEx: Windows 95, Windows Me, Windows XPSummarySoftwareHow is software categorized? operating system OverviewWhat does an operating system do?